1
|
Riddle A, Srivastava T, Wang K, Tellez E, O'Neill H, Gong X, O'Niel A, Bell JA, Raber J, Lattal M, Maylie J, Back SA. Mild neonatal hypoxia disrupts adult hippocampal learning and memory and is associated with CK2-mediated dysregulation of synaptic calcium-activated potassium channel KCNN2. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.10.602558. [PMID: 39071376 PMCID: PMC11275740 DOI: 10.1101/2024.07.10.602558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
Objective Although nearly half of preterm survivors display persistent neurobehavioral dysfunction including memory impairment without overt gray matter injury, the underlying mechanisms of neuronal or glial dysfunction, and their relationship to commonly observed cerebral white matter injury are unclear. We developed a mouse model to test the hypothesis that mild hypoxia during preterm equivalence is sufficient to persistently disrupt hippocampal neuronal maturation related to adult cellular mechanisms of learning and memory. Methods: Neonatal (P2) mice were exposed to mild hypoxia (8%O 2 ) for 30 min and evaluated for acute injury responses or survived until adulthood for assessment of learning and memory and hippocampal neurodevelopment. Results Neonatal mild hypoxia resulted in clinically relevant oxygen desaturation and tachycardia without bradycardia and was not accompanied by cerebral gray or white matter injury. Neonatal hypoxia exposure was sufficient to cause hippocampal learning and memory deficits and abnormal maturation of CA1 neurons that persisted into adulthood. This was accompanied by reduced hippocampal CA3-CA1 synaptic strength and LTP and reduced synaptic activity of calcium-sensitive SK2 channels, key regulators of spike timing dependent neuroplasticity, including LTP. Structural illumination microscopy revealed reduced synaptic density, but intact SK2 localization at the synapse. Persistent loss of SK2 activity was mediated by altered casein kinase 2 (CK2) signaling. Interpretation Clinically relevant mild hypoxic exposure in the neonatal mouse is sufficient to produce morphometric and functional disturbances in hippocampal neuronal maturation independently of white matter injury. Additionally, we describe a novel persistent mechanism of potassium channel dysregulation after neonatal hypoxia. Collectively our findings suggest an unexplored explanation for the broad spectrum of neurobehavioral, cognitive and learning disabilities that paradoxically persist into adulthood without overt gray matter injury after preterm birth.
Collapse
|
2
|
Wilinska M, Bachman T, Szczapa T, Wroblewska-Seniuk K, Chojnacka K, Loniewska B, Olszanska K, Rzepecka Weglarz B, Janusz K, Piwowarczyk P, Onland W, Hutten GJ, van Leuteren RW, van Kaam AH. Performance and safety of the PRICO closed-loop oxygen saturation targeting system in neonates: pragmatic multicentre cross-over study (TarOx Study). BMJ Paediatr Open 2024; 8:e002583. [PMID: 39019542 PMCID: PMC11253729 DOI: 10.1136/bmjpo-2024-002583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 05/29/2024] [Indexed: 07/19/2024] Open
Abstract
OBJECTIVE This study aims to evaluate the performance of the fabian-Predictive-Intelligent-Control-of-Oxygenation (PRICO) system for automated control of the fraction of inspired oxygen (FiO2). DESIGN Multicentre randomised cross-over study. SETTING Five neonatal intensive care units experienced with automated control of FiO2 and the fabian ventilator. PATIENTS 39 infants: median gestational age of 27 weeks (IQR: 26-30), postnatal age 7 days (IQR: 2-17), weight 1120 g (IQR: 915-1588), FiO2 0.32 (IQR: 0.22-0.43) receiving both non-invasive (27) and invasive (12) respiratory support. INTERVENTION Randomised sequential 24-hour periods of automated and manual FiO2 control. MAIN OUTCOME MEASURES Proportion (%) of time in normoxaemia (90%-95% with FiO2>0.21 and 90%-100% when FiO2=0.21) was the primary endpoint. Secondary endpoints were severe hypoxaemia (<80%) and severe hyperoxaemia (>98% with FiO2>0.21) and prevalence of episodes ≥60 s at these two SpO2 extremes. RESULTS During automated control, subjects spent more time in normoxaemia (74%±22% vs 51%±22%, p<0.001) with less time above and below (<90% (9%±8% vs 12%±11%, p<0.001) and >95% with FiO2>0.21 (16%±19% vs 35%±24%) p<0.001). They spent less time in severe hyperoxaemia (1% (0%-3.5%) vs 5% (1%-10%), p<0.001) but exposure to severe hypoxaemia was low in both arms and not different. The differences in prolonged episodes of SpO2 were consistent with the times at extremes. CONCLUSIONS This study demonstrates the ability of the PRICO automated oxygen control algorithm to improve the maintenance of SpO2 in normoxaemia and to avoid hyperoxaemia without increasing hypoxaemia.
Collapse
Affiliation(s)
- Maria Wilinska
- Department of Obstetrics and Perinatology, National Medical Institute, Warsaw, Poland
- Department of Neonatology, Centre for Postgraduate Medical Education, Warsaw, Poland
| | - Thomas Bachman
- Faculty Biomedical Engineering, Czech Technical University in Prague, Kladno, Czech Republic
| | - Tomasz Szczapa
- Neonatal Biophysical Monitoring and Cardiopulmonary Therapies Research Unit, Poznan University of Medical Sciences, Poznan, Poland
- II Department of Neonatology, Poznan University of Medical Sciences, Poznan, Poland
| | - Katarzyna Wroblewska-Seniuk
- Neonatal Biophysical Monitoring and Cardiopulmonary Therapies Research Unit, Poznan University of Medical Sciences, Poznan, Poland
- II Department of Neonatology, Poznan University of Medical Sciences, Poznan, Poland
| | - Karolina Chojnacka
- Neonatal Biophysical Monitoring and Cardiopulmonary Therapies Research Unit, Poznan University of Medical Sciences, Poznan, Poland
- II Department of Neonatology, Poznan University of Medical Sciences, Poznan, Poland
| | - Beata Loniewska
- Department of Neonatology, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Karolina Olszanska
- Department of Neonatology, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | | | - Katarzyna Janusz
- Department of Neontology, Ujastek Medical Center, Krakow, Poland
| | - Pawel Piwowarczyk
- Department of Neonatology, Centre for Postgraduate Medical Education, Warsaw, Poland
| | - Wes Onland
- Departent of Neonatology Emma Children's Hospital UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development Research Institute, UMC, Amsterdam, The Netherlands
| | - G Jeroen Hutten
- Departent of Neonatology Emma Children's Hospital UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development Research Institute, UMC, Amsterdam, The Netherlands
| | - Ruud W van Leuteren
- Departent of Neonatology Emma Children's Hospital UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development Research Institute, UMC, Amsterdam, The Netherlands
| | - Anton H van Kaam
- Departent of Neonatology Emma Children's Hospital UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Reproduction & Development Research Institute, UMC, Amsterdam, The Netherlands
| |
Collapse
|
3
|
Horne RS, Yee AK, Shetty M, Siriwardhana LS, Wong FY, Walter LM. Longitudinal effects of early exposure to intermittent hypoxia on autonomic cardiovascular control in very preterm infants. Sleep Med 2024; 119:458-466. [PMID: 38788316 DOI: 10.1016/j.sleep.2024.05.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024]
Abstract
INTRODUCTION Cardiorespiratory control is immature in infants born preterm compared to those born at term. Animal studies have shown that repetitive hypoxia associated with periodic breathing can alter autonomic control. We aimed to elucidate if the amount of time spent with apnoea and periodic breathing in the neonatal unit was associated with longitudinal changes in autonomic control assessed using heart rate variability. METHODS Twenty-nine very preterm infants (10 M 19F) were studied during supine daytime sleep on 4 occasions. Study 1: 32-36 weeks post menstrual age (PMA) (n = 29), Study 2: 36-40 weeks PMA (n = 27), Study 3: 3-months corrected age (CA) (n = 20) and Study 4: 6-months CA (n = 26). The percentage total sleep time (%TST) spent having apnoeas in active (AS) and quiet sleep (QS) at each study was calculated. Total power, low frequency (LF, sympathetic + parasympathetic activity) high frequency (HF, parasympathetic activity), and LF/HF (sympathovagal balance) were calculated. Infants were divided into two groups based on the %TST spent with apnoeas above and below the median in AS and QS at Study 1. Data were normalised and compared with two-way ANOVA with Bonferroni post-hoc tests. RESULTS When apnoeas were included in the analysis, in QS Total power and HF power were higher, and when apnoeas were excluded HF power was higher in QS but lower in AS in the above median group at Study 4. CONCLUSION This study provides new evidence that short apnoeas, particularly periodic breathing, which is currently not detected or treated in the neonatal unit can affect autonomic cardiovascular control.
Collapse
Affiliation(s)
| | - Alicia K Yee
- Department of Paediatrics, Monash University, Melbourne, Australia
| | - Marisha Shetty
- Department of Paediatrics, Monash University, Melbourne, Australia
| | | | - Flora Y Wong
- Department of Paediatrics, Monash University, Melbourne, Australia; Monash Newborn, Monash Children's Hospital, Melbourne, Australia
| | - Lisa M Walter
- Department of Paediatrics, Monash University, Melbourne, Australia
| |
Collapse
|
4
|
Ahmed S, Rehman AU, Bibi Z, Iftikhar S, Raza M, Yousuf HMA, Naz F, Shah SAM, Mir SL, Bibi A, Khan WA, Salat MS, Ambreen G, Hussain K. Predictors for poor daily weight gain in preterm neonates exposed to different dose regimens of caffeine in ICU- a retrospective cohort study. BMC Pediatr 2024; 24:401. [PMID: 38898410 PMCID: PMC11188204 DOI: 10.1186/s12887-024-04850-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND With a wide therapeutic index, efficacy, ease of use, and other neuroprotective and respiratory benefits, caffeine citrate(CC) is currently the drug of choice for preterm neonates (PTNs). Caffeine-induced excessive energy expenditure, diuresis, natriuresis, and other CC-associated potential side-effects (CC-APSEs) result in lower daily-weight gain (WG) in premature neonates. This study aimed to evaluate the risk factors for daily-WG in neonates exposed to different dose regimens of caffeine in ICU. METHOD This retrospective cohort study included neonates of ≤ 36weeks gestational age (GA) and received CC-therapy. The same participants were followed for data analysis in two postnatal phases: 15-28 and 29-42 days of life (DOL). Based on daily CC-dose, formed group-I (received; standard-doses = 5 mg/kg/day), group-II (received;>5-7 mg/kg/day), and group-III (received;>7 mg/kg/day). Prenatal and postnatal clinical characteristics, CC-regimen, daily-WG, CC-APSEs, and concomitant risk-factors, including daily-caloric intake, Parenteral-Nutrition duration, steroids, diuretics, and ibuprofen exposure, were analyzed separately for group-II and group-III using group-I as standard. Regression analysis was performed to evaluate the risk factors for daily-WG. RESULTS Included 314 PTNs. During 15-28 DOL, the mean-daily-WG(MD-WG) was significantly higher in group-I than group-II [19.9 ± 0.70 g/kg/d vs. 17.7 ± 0.52 p = 0.036] and group-III [19.9 ± 0.70 g/kg/d vs. 16.8 ± 0.73 p < 0.001]. During 29-42 DOL the MD-WG of group-I was only significantly higher than group-III [21.7 ± 0.44 g/kg/d vs. 18.3 ± 0.41 g/kg/d p = 0.003] and comparable with group-II. During 15-28 DOL, observed CC-APSEs was significantly higher in group-II and III but during 29-42 DOL it was only significant in group-III. In the adjusted regression analysis for daily-WG during 15-28DOL, with respect to standard-dose, 5-7 mg/kg/day (β=-1.04; 95%CI:-1.62,-0.93) and > 7-10 mg/kg/day (β=-1.36; 95%CI:-1.56,-1.02) were associated with a lower daily-WG. However, during 29-42DOL, this association was present only for > 7-10 mg/kg/day (β=-1.54; 95%CI:-1.66,-1.42). The GA ≤ 27weeks (β=-1.03 95%CI:-1.24, -0.88) was associated with lower daily-WG only during 15-28DOL. During both periods of therapy, higher cumulative-caffeine dose and presence of culture proven sepsis, tachypnea, hyponatremia, and feeding intolerance were significantly associated with lower daily-WG. Conversely, daily kcal intake was found to be linked with an increase in daily-WG in both periods. CONCLUSION In this study cohort exposure to higher caffeine daily and cumulative doses is associated with lower postnatal daily-WG in PTNs than standard-daily doses, which may be due to its catabolic effects and CC-APSEs.
Collapse
Affiliation(s)
- Saeed Ahmed
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Ayaz Ur Rehman
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Zainab Bibi
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Sundus Iftikhar
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Maleeha Raza
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | | | - Fizzah Naz
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | | | | | - Ayesha Bibi
- Dow University of Health Sciences, Karachi, Pakistan
| | - Wasif Ahmed Khan
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Muhammad Sohail Salat
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Gul Ambreen
- Department of Pediatrics & Child Health, Aga Khan University Hospital, Karachi, Pakistan.
| | - Kashif Hussain
- Department of Pharmacy , Aga Khan University Hospital, Karachi, Pakistan
| |
Collapse
|
5
|
Qiu J, Di Fiore JM, Krishnamurthi N, Indic P, Carroll JL, Claure N, Kemp JS, Dennery PA, Ambalavanan N, Weese-Mayer DE, Maria Hibbs A, Martin RJ, Bancalari E, Hamvas A, Randall Moorman J, Lake DE. Highly comparative time series analysis of oxygen saturation and heart rate to predict respiratory outcomes in extremely preterm infants. Physiol Meas 2024; 45:055025. [PMID: 38772400 DOI: 10.1088/1361-6579/ad4e91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 05/21/2024] [Indexed: 05/23/2024]
Abstract
Objective.Highly comparative time series analysis (HCTSA) is a novel approach involving massive feature extraction using publicly available code from many disciplines. The Prematurity-Related Ventilatory Control (Pre-Vent) observational multicenter prospective study collected bedside monitor data from>700extremely preterm infants to identify physiologic features that predict respiratory outcomes.Approach. We calculated a subset of 33 HCTSA features on>7 M 10 min windows of oxygen saturation (SPO2) and heart rate (HR) from the Pre-Vent cohort to quantify predictive performance. This subset included representatives previously identified using unsupervised clustering on>3500HCTSA algorithms. We hypothesized that the best HCTSA algorithms would compare favorably to optimal PreVent physiologic predictor IH90_DPE (duration per event of intermittent hypoxemia events below 90%).Main Results.The top HCTSA features were from a cluster of algorithms associated with the autocorrelation of SPO2 time series and identified low frequency patterns of desaturation as high risk. These features had comparable performance to and were highly correlated with IH90_DPE but perhaps measure the physiologic status of an infant in a more robust way that warrants further investigation. The top HR HCTSA features were symbolic transformation measures that had previously been identified as strong predictors of neonatal mortality. HR metrics were only important predictors at early days of life which was likely due to the larger proportion of infants whose outcome was death by any cause. A simple HCTSA model using 3 top features outperformed IH90_DPE at day of life 7 (.778 versus .729) but was essentially equivalent at day of life 28 (.849 versus .850).Significance. These results validated the utility of a representative HCTSA approach but also provides additional evidence supporting IH90_DPE as an optimal predictor of respiratory outcomes.
Collapse
Affiliation(s)
- Jiaxing Qiu
- Department of Medicine, Division of Cardiology, University of Virginia School of Medicine, Charlottesville, VA, United States of America
| | - Juliann M Di Fiore
- Department of Pediatrics, Case Western Reserve University School of Medicine, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH, United States of America
| | - Narayanan Krishnamurthi
- Department of Pediatrics, Division of Autonomic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States of America
| | - Premananda Indic
- Department of Electrical Engineering, University of Texas at Tyler, Tyler, TX, United States of America
| | - John L Carroll
- Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Hospital, Little Rock, AR, United States of America
| | - Nelson Claure
- Department of Pediatrics, Division of Neonatology, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - James S Kemp
- Department of Pediatrics, Division of Pediatric Pulmonology, Washington University School of Medicine, St. Louis, MO, United States of America
| | - Phyllis A Dennery
- Department of Pediatrics, Brown University School of Medicine, Department of Pediatrics, Providence, RI, United States of America
| | - Namasivayam Ambalavanan
- Department of Pediatrics, Division of Neonatology, University of Alabama at Birmingham, Birmingham, AL, United States of America
| | - Debra E Weese-Mayer
- Department of Pediatrics, Division of Autonomic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States of America
| | - Anna Maria Hibbs
- Department of Pediatrics, Case Western Reserve University School of Medicine, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH, United States of America
| | - Richard J Martin
- Department of Pediatrics, Case Western Reserve University School of Medicine, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH, United States of America
| | - Eduardo Bancalari
- Department of Pediatrics, Division of Neonatology, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Aaron Hamvas
- Ann and Robert H. Lurie Children's Hospital and Northwestern University Department of Pediatrics, Chicago, IL, United States of America
| | - J Randall Moorman
- Department of Medicine, Division of Cardiology, University of Virginia School of Medicine, Charlottesville, VA, United States of America
| | - Douglas E Lake
- Department of Medicine, Division of Cardiology, University of Virginia School of Medicine, Charlottesville, VA, United States of America
| |
Collapse
|
6
|
Borenstein-Levin L, Haj A, Riskin A, Dinur G, Littner Y, Hochwald O, Kugelman A. Oxygenation Instability during Bolus versus Continuous Feeding among Very Low Birth Weight Premature Infants, Supported by Noninvasive Ventilation: A Randomized Prospective Study. Am J Perinatol 2024; 41:e2341-e2347. [PMID: 37494585 DOI: 10.1055/s-0043-1771257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
OBJECTIVE This study aimed to compare oxygenation instability, as documented by the oxygen saturation (SpO2) histograms, during bolus (over 30 minutes) versus continuous (over 2 hours) feeding among very low birth weight (VLBW) premature infants, supported with noninvasive ventilation (NIV). STUDY DESIGN This was a randomized prospective study. VLBW infants supported with NIV received three consecutive feeds in a random order of bolus-continuous-bolus or continuous-bolus-continuous. During each feed, 30 minutes and 2 hours histograms were documented. RESULTS Twenty-four infants (birth weight [mean ± standard deviation, SD] 820 ± 168 g, gestational age [mean ± SD] 27.0 ± 1.6 weeks) were included in our study (12 infants started with bolus feeding and 12 with continuous feeding) and 72 histograms were obtained (36 during bolus feeding and 36 during continuous feeding). No differences in mean fraction of inspired oxygen (FiO2), and number of apnea events were observed between the two feeding modes. Oxygenation instability as assessed by time spent in different SpO2 ranges and histogram types (stable or unstable) was comparable during bolus and continuous feedings. Changing feeding mode from bolus to continuous or vice versa did not significantly change the oxygenation instability of the group, though individual infants did show a consistence response to feeding length changes. CONCLUSION Among VLBW infants supported with NIV, oxygenation instability, as documented by SpO2 histograms, was comparable between bolus and continuous feedings. Individual infants may benefit from specific feeding length, and this can be easily demonstrated by the SpO2 histograms. KEY POINTS · Feeding length did not affect oxygenation instability of preterm infants on noninvasive respiratory Support.. · Oxygen saturation histograms allow objective quantification of oxygenation instability at the bedside.. · Individual infants benefit from specific feeding length, as demonstrated by SpO2 histograms..
Collapse
Affiliation(s)
- Liron Borenstein-Levin
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Ahmad Haj
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Arieh Riskin
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Neonatal Intensive Care Unit, Bnai Zion Medical Center, Haifa, Israel
| | - Gil Dinur
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Yoav Littner
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Ori Hochwald
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Amir Kugelman
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| |
Collapse
|
7
|
Rabienia Haratbar S, Chen L, Cheng Q, Singh D, Fathi F, Mohtasebi M, Liu X, Patwardhan A, Bhandary P, Bada HS, Yu G, Abu Jawdeh EG. The impact of intermittent hypoxemia on type 1 retinopathy of prematurity in preterm infants. Pediatr Res 2024:10.1038/s41390-024-03169-5. [PMID: 38600299 DOI: 10.1038/s41390-024-03169-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 04/12/2024]
Abstract
BACKGROUND Intermittent hypoxemia (IH) may influence retinopathy of prematurity (ROP) development in preterm infants, however, previous studies had mixed results. This study tests the hypothesis that increased IH is associated with Type 1 ROP; a stage beyond which treatment is indicated. METHODS IH was quantified by continuously monitoring oxygen saturation (SpO2) using high-resolution pulse oximeters during the first 10 weeks of life. Statistical analyses assessed the relationship and predictive ability of weekly and cumulative IH for Type 1 ROP development. RESULTS Most analyses showed no association between IH and Type 1 ROP adjusting for gestational age (GA) and birth weight (BW). However, cumulative IH of longer duration during weeks 5-10, 6-10, and 7-10 were significantly associated with Type 1 ROP adjusting for GA and BW, e.g., the adjusted odds ratio of Type 1 ROP was 2.01 (p = 0.03) for every 3.8 seconds increase in IH duration from week 6-10. IH did not provide statistically significant added predictive ability above GA and BW. CONCLUSIONS For most analyses there was no significant association between IH and Type 1 ROP adjusting for GA and BW. However, infants with longer IH duration during the second month of life had higher risk for Type 1 ROP. IMPACT The relationship and predictive ability of intermittent hypoxemia (IH) on retinopathy of prematurity (ROP) is controversial. This study shows no significant association between IH events and Type 1 ROP after adjusting for gestational age (GA) and birth weight (BW), except for cumulative IH of longer duration in the second month of life. In this cohort, IH does not provide a statistically significant improvement in ROP prediction over GA and BW. This study is the first to assess the cumulative impact of IH measures on Type 1 ROP. Interventions for reducing IH duration during critical postnatal periods may improve ROP outcomes.
Collapse
Affiliation(s)
| | - Li Chen
- Biostatistics and Bioinformatics Shared Resource Facility, Markey Cancer Center, University of Kentucky, Lexington, Kentucky, USA
| | - Qiang Cheng
- Institute for Biomedical Informatics, Department of Internal Medicine and Department of Computer Science, Lexington, Kentucky, USA
| | - Dara Singh
- Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky, USA
| | - Faraneh Fathi
- Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky, USA
| | - Mehrana Mohtasebi
- Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky, USA
| | - Xuhui Liu
- Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky, USA
| | - Abhijit Patwardhan
- Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky, USA
| | - Prasad Bhandary
- Division of Neonatology, Department of Pediatrics, University of Kentucky, Lexington, Kentucky, USA
| | - Henrietta S Bada
- Division of Neonatology, Department of Pediatrics, University of Kentucky, Lexington, Kentucky, USA
| | - Guoqiang Yu
- Department of Biomedical Engineering, University of Kentucky, Lexington, Kentucky, USA.
| | - Elie G Abu Jawdeh
- Division of Neonatology, Department of Pediatrics, University of Kentucky, Lexington, Kentucky, USA.
| |
Collapse
|
8
|
Bashir S, Cai CL, Marcelino M, Aranda JV, Beharry KD. Comparison of Glutathione Nanoparticles, CoEnzyme Q10, and Fish Oil for Prevention of Oxygen-Induced Retinopathy in Neonatal Rats. Pharmaceuticals (Basel) 2024; 17:381. [PMID: 38543167 PMCID: PMC10975314 DOI: 10.3390/ph17030381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/06/2024] [Accepted: 03/12/2024] [Indexed: 04/01/2024] Open
Abstract
Notch ligands and receptors are important for cell specification and angiogenesis, but their role in oxygen-induced retinopathy (OIR) is not well studied. Delta-like ligand (DLL)-4/Notch inhibits angiogenesis, while Jagged-1/Notch promotes angiogenesis. We tested the hypothesis that early supplementation with antioxidants and/or fish oil curtails severe OIR by inducing DLL-4/Notch and reducing Jagged-1/Notch. Newborn rats were exposed to brief intermittent hypoxia (IH) during hyperoxia, during which they received daily oral supplements of (1) fish oil, (2) coenzyme Q10 (CoQ10) in olive oil (OO), (3) glutathione nanoparticles (nGSH), (4) fish oil + CoQ10, or (5) OO (controls) from birth (P0) to P14. At P14, the pups were placed in room air (RA) until P21, with no further treatment. Oxidative stress, apoptosis, ocular histopathology, and Notch signaling were assessed. Neonatal IH resulted in severe retinal damage consistent with retinopathy of prematurity (ROP). Retinal damage was associated with induced oxidative stress and Jagged-1/Notch signaling, as well as reduced DLL-4/Notch signaling. All treatments reversed these outcomes, but nGSH produced the most beneficial outcomes. Severe OIR promoted the induction of Jagged-1/Notch and curtailed DLL-4/Notch, which was an effect that could be reversed with nGSH supplementation. These findings may indicate a potential alternate pathway for ROP treatment and/or prevention.
Collapse
Affiliation(s)
- Sidra Bashir
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York Downstate Health Sciences University, Brooklyn, NY 11203, USA; (S.B.); (C.L.C.); (J.V.A.)
| | - Charles L. Cai
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York Downstate Health Sciences University, Brooklyn, NY 11203, USA; (S.B.); (C.L.C.); (J.V.A.)
| | - Matthew Marcelino
- Medical School, State University of New York Downstate Health Sciences University, Brooklyn, NY 11203, USA;
| | - Jacob V. Aranda
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York Downstate Health Sciences University, Brooklyn, NY 11203, USA; (S.B.); (C.L.C.); (J.V.A.)
- Department of Ophthalmology, State University of New York Downstate Health Sciences University, Brooklyn, NY 11203, USA
- SUNY Eye Institute, Brooklyn, NY 11203, USA
| | - Kay D. Beharry
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York Downstate Health Sciences University, Brooklyn, NY 11203, USA; (S.B.); (C.L.C.); (J.V.A.)
- Department of Ophthalmology, State University of New York Downstate Health Sciences University, Brooklyn, NY 11203, USA
- SUNY Eye Institute, Brooklyn, NY 11203, USA
| |
Collapse
|
9
|
Kubota H, Fukushima Y, Kawasaki R, Endo T, Hatsukawa Y, Ineyama H, Hirata K, Hirano S, Wada K, Nishida K. Continuous oxygen saturation and risk of retinopathy of prematurity in a Japanese cohort. Br J Ophthalmol 2024:bjo-2023-324225. [PMID: 38448200 DOI: 10.1136/bjo-2023-324225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 12/23/2023] [Indexed: 03/08/2024]
Abstract
BACKGROUND/AIMS We assessed the associations between retinopathy of prematurity (ROP) and continuous measurements of oxygen saturation (SpO2), and developed a risk prediction model for severe ROP using birth data and SpO2 data. METHODS This retrospective study included infants who were born before 30 weeks of gestation between August 2009 and January 2019 and who were screened for ROP at a single hospital in Japan. We extracted data on birth weight (BW), birth length, gestational age (GA) and minute-by-minute SpO2 during the first 20 days from the medical records. We defined four SpO2 variables using sequential measurements. Multivariate logistic regression was used to develop a model that combined birth data and SpO2 data to predict treatment-requiring ROP (TR-ROP). The model's performance was evaluated using the area under the receiver operating characteristic curve (AUC). RESULTS Among 350 infants, 83 (23.7%) required ROP treatment. The SpO2 variables in infants with TR-ROP differed significantly from those with non-TR-ROP. The average SpO2 and high SpO2 showed strong associations with GA (r=0.73 and r=0.70, respectively). The model incorporating birth data and the four SpO2 variables demonstrated good discriminative ability (AUC=0.83), but it did not outperform the model incorporating BW and GA (AUC=0.82). CONCLUSION Data obtained by continuous SpO2 monitoring demonstrated valuable associations with severe ROP, as well as with GA. Differences in the distribution of average SpO2 and high SpO2 between infants with TR-ROP and non-TR-ROP could be used to establish efficient cut-off values for risk determination.
Collapse
Affiliation(s)
- Hiroshi Kubota
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoko Fukushima
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
- Integrated Frontier Research for Medical Science Division (iFremed), Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Japan
| | - Ryo Kawasaki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takao Endo
- Department of Ophthalmology, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Yoshikazu Hatsukawa
- Department of Ophthalmology, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Hiromi Ineyama
- Department of Ophthalmology, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Katsuya Hirata
- Department of Neonatal Medicine, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Shinya Hirano
- Department of Neonatal Medicine, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Kazuko Wada
- Department of Neonatal Medicine, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
- Integrated Frontier Research for Medical Science Division (iFremed), Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Japan
| |
Collapse
|
10
|
Hibbs AM, Chen Z, Minich NM, Martin RJ, Raffay TM, MacFarlane PM, Di Fiore JM. Association between Intermittent Hypoxemia and NICU Length of Stay in Preterm Infants. Neonatology 2024; 121:327-335. [PMID: 38437802 PMCID: PMC11147692 DOI: 10.1159/000535264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/14/2023] [Indexed: 03/06/2024]
Abstract
INTRODUCTION Length of hospitalization varies widely in preterm infants and can be affected by multiple maternal and neonatal factors including respiratory instability. Therefore, we aimed to determine the association between postnatal intermittent hypoxemia (IH) and prolonged hospitalization. METHODS This prospective single-center cohort study followed infants born at <31 weeks of gestational age through 2 years corrected age with detailed oxygen saturation data captured from days 7 to 30 of age. RESULTS 51/164 (31%) of infants were discharged after 400/7 weeks of corrected gestational age (CGA). A greater average daily number of IH events (OR per 10 events/day 1.33 [95% CI 1.03-1.72]), duration of events (OR per minute 1.14 [1.07-1.21]), and percent time with oxygen saturation <80% (OR per percent 1.88 [1.25-2.85]) on days 7-30 of age were all significantly associated with prolonged hospitalization past 400/7 weeks CGA. In survival analyses, infants with a greater average daily number of IH events (HR per 10 events/day 0.89 [0.81-0.98]), percent time with oxygen saturation <80% (HR per percent 0.79 [0.67-0.94]), and duration of events (HR per minute 0.93 [0.91-0.95]) on days 7-30 of age all had significantly lower probability of earlier discharge. In addition, there was a significant interaction with gestational age; the association between IH and prolonged hospitalization was stronger in more mature infants (p = 0.024). CONCLUSIONS Physiological instability on days 7-30 of age, as manifested by IH, is significantly associated with prolonged hospitalization. IH likely represents both a marker of initial severity of illness and the beginning of biological cascades, leading to prematurity-associated morbidities.
Collapse
Affiliation(s)
- Anna Maria Hibbs
- Department of Pediatrics, UH Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, Ohio, USA
| | - Zhengyi Chen
- Department of Population and Quantitative Health Sciences, University Hospitals of Cleveland, Case Western Reserve University, Cleveland, Ohio, USA
| | - Nori M Minich
- Department of Pediatrics, UH Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, Ohio, USA
| | - Richard J Martin
- Department of Pediatrics, UH Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, Ohio, USA
| | - Thomas M Raffay
- Department of Pediatrics, UH Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, Ohio, USA
| | - Peter M MacFarlane
- Department of Pediatrics, UH Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, Ohio, USA
| | - Juliann M Di Fiore
- Department of Pediatrics, UH Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, Ohio, USA
| |
Collapse
|
11
|
Lin WC, Jordan BK, Scottoline B, Ostmo SR, Coyner AS, Singh P, Kalpathy-Cramer J, Erdogmus D, Chan RP, Chiang MF, Campbell JP. Oxygenation Fluctuations Associated with Severe Retinopathy of Prematurity: Insights from a Multimodal Deep Learning Approach. OPHTHALMOLOGY SCIENCE 2024; 4:100417. [PMID: 38059124 PMCID: PMC10696464 DOI: 10.1016/j.xops.2023.100417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/27/2023] [Accepted: 10/18/2023] [Indexed: 12/08/2023]
Abstract
Purpose Retinopathy of prematurity (ROP) is one of the leading causes of blindness in children. Although the role of oxygen in the pathophysiology of ROP is well established, a precise understanding of the dynamic relationship between oxygen exposure ROP incidence and severity is lacking. The purpose of this study was to evaluate the correlation between time-dependent oxygen variables and the onset of ROP. Design Retrospective cohort study. Participants Two hundred thirty infants who were born at a single academic center and met the inclusion criteria were included. Infants are mainly born between January 2011 and October 2022. Methods Patient data were extracted from electronic health records (EHRs), with sufficient time-dependent oxygen data. Clinical outcomes for ROP were recorded as none/mild or moderate/severe (defined as type II or worse). Mixed-effects linear models were used to compare the 2 groups in terms of dynamic oxygen variables, such as daily average and the coefficient of variation (COV) fraction of inspired oxygen (FiO2). Support vector machine (SVM) and long-short-term memory (LSTM)-based multimodal models were trained with fivefold cross-validation to predict which infants would develop moderate/severe ROP. Gestational age (GA), birth weight, and time-dependent oxygen variables were used to develop predictive models. Main Outcome Measures Model cross-validation performance was evaluated by computing the mean area under the receiver operating characteristic (AUROC) curve, precision, recall, and F1 score. Results We found that both daily average and COV of FiO2 were associated with more severe ROP (adjusted P < 0.001). With fivefold cross-validation, the multimodal LSTM models had higher performance than the best static models (SVM using GA and 3 average FiO2 features) and SVM models trained on GA alone (mean AUROC = 0.89 ± 0.04 vs. 0.86 ± 0.05 vs. 0.83 ± 0.04). Conclusions The development of severe ROP might not only be influenced by oxygen exposure but also by its fluctuation, which provides direction for future study of pathophysiological factors associated with severe ROP development. Additionally, we demonstrated that multimodal neural networks can be a method to extract useful information from time-series data, which may be a valuable methodology for the investigation of other diseases using EHR data. Financial Disclosures Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
Collapse
Affiliation(s)
- Wei-Chun Lin
- Department of Ophthalmology, Oregon Health & Science University, Portland, Oregon
| | - Brian K. Jordan
- Department of Neonatology, Oregon Health and Science University, Portland, Oregon
| | - Brian Scottoline
- Department of Neonatology, Oregon Health and Science University, Portland, Oregon
| | - Susan R. Ostmo
- Department of Ophthalmology, Oregon Health & Science University, Portland, Oregon
| | - Aaron S. Coyner
- Department of Ophthalmology, Oregon Health & Science University, Portland, Oregon
| | - Praveer Singh
- Department of Ophthalmology, University of Colorado (CU) School of Medicine, Denver, Colorado
| | | | - Deniz Erdogmus
- Department of Electrical and Computer Engineering, Northeastern University, Boston, Massachusetts
| | - R.V. Paul Chan
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, Illinois
| | - Michael F. Chiang
- National Eye Institute, National Institutes of Health, Bethesda, Maryland
- National Library of Medicine, National Institutes of Health, Bethesda, Maryland
| | - J. Peter Campbell
- Department of Ophthalmology, Oregon Health & Science University, Portland, Oregon
| |
Collapse
|
12
|
Sant'Anna G, Shalish W. Weaning from mechanical ventilation and assessment of extubation readiness. Semin Perinatol 2024; 48:151890. [PMID: 38553331 DOI: 10.1016/j.semperi.2024.151890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
Tremendous advancements in neonatal respiratory care have contributed to the improved survival of extremely preterm infants (gestational age ≤ 28 weeks). While mechanical ventilation is often considered one of the most important breakthroughs in neonatology, it is also associated with numerous short and long-term complications. For those reasons, clinical research has focused on strategies to avoid or reduce exposure to mechanical ventilation. Nonetheless, in the extreme preterm population, 70-100% of infants born 22-28 weeks of gestation are exposed to mechanical ventilation, with nearly 50% being ventilated for ≥ 3 weeks. As contemporary practices have shifted towards selectively reserving mechanical ventilation for those patients, mechanical ventilation weaning and extubation remain a priority yet offer a heightened challenge for clinicians. In this review, we will summarize the evidence for different strategies to expedite weaning and assess extubation readiness in preterm infants, with a particular focus on extremely preterm infants.
Collapse
Affiliation(s)
- Guilherme Sant'Anna
- Professor of Pediatrics, Division of Neonatology, Montreal Children's Hospital Departments of Pediatrics and Experimental Medicine, Senior Scientist of the Research Institute of the McGill University Health Center, McGill University Health Center, 1001 Boulevard Decarie, Room B05.2711, Montreal, Quebec H4A3J1, Canada.
| | - Wissam Shalish
- Assistant Professor of Pediatrics, Division of Neonatology, Montreal Children's Hospital Departments of Pediatrics and Experimental Medicine, Junior Scientist of FRQS, McGill University Health Center, Montreal, Quebec, Canada
| |
Collapse
|
13
|
Weese-Mayer DE, Di Fiore JM, Lake DE, Hibbs AM, Claure N, Qiu J, Ambalavanan N, Bancalari E, Kemp JS, Zimmet AM, Carroll JL, Martin RJ, Krahn KN, Hamvas A, Ratcliffe SJ, Krishnamurthi N, Indic P, Dormishian A, Dennery PA, Moorman JR. Maturation of cardioventilatory physiological trajectories in extremely preterm infants. Pediatr Res 2024; 95:1060-1069. [PMID: 37857848 DOI: 10.1038/s41390-023-02839-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/14/2023] [Accepted: 09/27/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND In extremely preterm infants, persistence of cardioventilatory events is associated with long-term morbidity. Therefore, the objective was to characterize physiologic growth curves of apnea, periodic breathing, intermittent hypoxemia, and bradycardia in extremely preterm infants during the first few months of life. METHODS The Prematurity-Related Ventilatory Control study included 717 preterm infants <29 weeks gestation. Waveforms were downloaded from bedside monitors with a novel sharing analytics strategy utilized to run software locally, with summary data sent to the Data Coordinating Center for compilation. RESULTS Apnea, periodic breathing, and intermittent hypoxemia events rose from day 3 of life then fell to near-resolution by 8-12 weeks of age. Apnea/intermittent hypoxemia were inversely correlated with gestational age, peaking at 3-4 weeks of age. Periodic breathing was positively correlated with gestational age peaking at 31-33 weeks postmenstrual age. Females had more periodic breathing but less intermittent hypoxemia/bradycardia. White infants had more apnea/periodic breathing/intermittent hypoxemia. Infants never receiving mechanical ventilation followed similar postnatal trajectories but with less apnea and intermittent hypoxemia, and more periodic breathing. CONCLUSIONS Cardioventilatory events peak during the first month of life but the actual postnatal trajectory is dependent on the type of event, race, sex and use of mechanical ventilation. IMPACT Physiologic curves of cardiorespiratory events in extremely preterm-born infants offer (1) objective measures to assess individual patient courses and (2) guides for research into control of ventilation, biomarkers and outcomes. Presented are updated maturational trajectories of apnea, periodic breathing, intermittent hypoxemia, and bradycardia in 717 infants born <29 weeks gestation from the multi-site NHLBI-funded Pre-Vent study. Cardioventilatory events peak during the first month of life but the actual postnatal trajectory is dependent on the type of event, race, sex and use of mechanical ventilation. Different time courses for apnea and periodic breathing suggest different maturational mechanisms.
Collapse
Affiliation(s)
- Debra E Weese-Mayer
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
- Division of Autonomic Medicine, Department of Pediatrics, Ann & Robert H Lurie Children's Hospital of Chicago and Stanley Manne Children's Research Institute, Chicago, IL, USA.
| | - Juliann M Di Fiore
- Department of Pediatrics, Case Western Reserve University, School of Medicine, Cleveland, OH, USA.
- Department of Pediatrics, Division of Neonatology, UH Rainbow Babies & Children's Hospital, Cleveland, OH, USA.
| | - Douglas E Lake
- Division of Cardiovascular Medicine, Center for Advanced Medical Analytics and Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Anna Maria Hibbs
- Department of Pediatrics, Case Western Reserve University, School of Medicine, Cleveland, OH, USA
- Department of Pediatrics, Division of Neonatology, UH Rainbow Babies & Children's Hospital, Cleveland, OH, USA
| | - Nelson Claure
- Division of Neonatology, Department of Pediatrics, Holtz Children's Hospital - Jackson Memorial Medical Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Jiaxing Qiu
- Division of Cardiovascular Medicine, Center for Advanced Medical Analytics and Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Namasivayam Ambalavanan
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Eduardo Bancalari
- Division of Neonatology, Department of Pediatrics, Holtz Children's Hospital - Jackson Memorial Medical Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - James S Kemp
- Department of Pediatrics, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Amanda M Zimmet
- Division of Cardiovascular Medicine, Center for Advanced Medical Analytics and Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - John L Carroll
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Richard J Martin
- Department of Pediatrics, Case Western Reserve University, School of Medicine, Cleveland, OH, USA
- Department of Pediatrics, Division of Neonatology, UH Rainbow Babies & Children's Hospital, Cleveland, OH, USA
| | - Katy N Krahn
- Division of Cardiovascular Medicine, Center for Advanced Medical Analytics and Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Aaron Hamvas
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Division of Neonatology, Department of Pediatrics, Ann & Robert H Lurie Children's Hospital of Chicago and Stanley Manne Children's Research Institute, Chicago, IL, USA
| | - Sarah J Ratcliffe
- Public Health Sciences, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Narayanan Krishnamurthi
- Division of Autonomic Medicine, Department of Pediatrics, Ann & Robert H Lurie Children's Hospital of Chicago and Stanley Manne Children's Research Institute, Chicago, IL, USA
| | - Premananda Indic
- Department of Electrical Engineering, University of Texas Tyler, Tyler, TX, USA
| | - Alaleh Dormishian
- Division of Neonatology, Department of Pediatrics, Holtz Children's Hospital - Jackson Memorial Medical Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Phyllis A Dennery
- Hasbro Children's Hospital, Brown University, Warren Alpert School of Medicine, Providence, RI, USA
| | - J Randall Moorman
- Division of Cardiovascular Medicine, Center for Advanced Medical Analytics and Department of Internal Medicine, University of Virginia School of Medicine, Charlottesville, VA, USA
- Public Health Sciences, University of Virginia School of Medicine, Charlottesville, VA, USA
| |
Collapse
|
14
|
Brouwer F, Salverda HH, Cramer SJE, Schmeits C, van der Plas J, Te Pas AB, Dekker J. Comparison of two different oxygen saturation target ranges for automated oxygen control in preterm infants: a randomised cross-over trial. Arch Dis Child Fetal Neonatal Ed 2024:fetalneonatal-2023-326278. [PMID: 38316547 DOI: 10.1136/archdischild-2023-326278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 01/14/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVE To compare the effect of peripheral oxygen saturation (SpO2) target range (TR) (either 91%-95% and 92%-96%) on the frequency and duration of hypoxic and hyperoxic episodes while on automated oxygen control using the OxyGenie controller. DESIGN Randomised cross-over study. SETTING Tertiary-level neonatal unit in the Netherlands. PATIENTS Infants (n=27) with a median (IQR) gestational age of 27+0 (25+5-27+3) weeks and postnatal age of 16 (10-22) days, receiving invasive or non-invasive respiratory support. INTERVENTIONS In both groups supplemental oxygen was titrated to a TR of 91%-95% (TRlow) or 92%-96% (TRhigh) by the OxyGenie controller (SLE6000 ventilator) for 24 hours each, in random sequence. After a switch in TR, a 1-hour washout period was applied to prevent carry-over bias. MAIN OUTCOME MEASURES Frequency and duration of hypoxic (SpO2<80% for ≥1 s) and hyperoxic episodes (SpO2>98% for ≥1 s). RESULTS Hypoxic episodes were less frequent when the higher range was targeted (TRhigh vs TRlow: 2.5 (0.7-6.2)/hour vs 2.4 (0.9-10.2)/hour, p=0.02), but hyperoxic episodes were more frequent (5.3 (1.8-12.3)/hour vs 2.9 (1.0-7.1)/hour, p<0.001). The duration of the out-of-range episodes was not significantly different (hypoxia: 4.7 (2.8-7.1) s vs 4.4 (3.7-6.5) s, p=0.67; hyperoxia: 4.3 (3.3-4.9) s vs 3.9 (2.8-5.5) s, p=0.89). CONCLUSION Targeting a higher SpO2 TR with the OxyGenie controller reduced hypoxic episodes but increased hyperoxic episodes. This study highlights the feasibility of using an automated oxygen titration device to explore the effects of subtle TR adjustments on clinical outcomes in neonatal care. TRIAL REGISTRATION NUMBER NL9662.
Collapse
Affiliation(s)
- Fleur Brouwer
- Willem-Alexander Children's Hospital, Department of Paediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Zuid-Holland, The Netherlands
| | - Hylke H Salverda
- Willem-Alexander Children's Hospital, Department of Paediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Zuid-Holland, The Netherlands
| | - Sophie J E Cramer
- Willem-Alexander Children's Hospital, Department of Paediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Zuid-Holland, The Netherlands
| | - Chantal Schmeits
- Willem-Alexander Children's Hospital, Department of Paediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Zuid-Holland, The Netherlands
| | - Jacoline van der Plas
- Willem-Alexander Children's Hospital, Department of Paediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Zuid-Holland, The Netherlands
| | - Arjan B Te Pas
- Willem-Alexander Children's Hospital, Department of Paediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Zuid-Holland, The Netherlands
| | - Janneke Dekker
- Willem-Alexander Children's Hospital, Department of Paediatrics, Division of Neonatology, Leiden University Medical Center, Leiden, Zuid-Holland, The Netherlands
| |
Collapse
|
15
|
Zhang L, Buonfiglio F, Fieß A, Pfeiffer N, Gericke A. Retinopathy of Prematurity-Targeting Hypoxic and Redox Signaling Pathways. Antioxidants (Basel) 2024; 13:148. [PMID: 38397746 PMCID: PMC10885953 DOI: 10.3390/antiox13020148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 02/25/2024] Open
Abstract
Retinopathy of prematurity (ROP) is a proliferative vascular ailment affecting the retina. It is the main risk factor for visual impairment and blindness in infants and young children worldwide. If left undiagnosed and untreated, it can progress to retinal detachment and severe visual impairment. Geographical variations in ROP epidemiology have emerged over recent decades, attributable to differing levels of care provided to preterm infants across countries and regions. Our understanding of the causes of ROP, screening, diagnosis, treatment, and associated risk factors continues to advance. This review article aims to present the pathophysiological mechanisms of ROP, including its treatment. Specifically, it delves into the latest cutting-edge treatment approaches targeting hypoxia and redox signaling pathways for this condition.
Collapse
Affiliation(s)
| | | | | | | | - Adrian Gericke
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; (L.Z.); (F.B.); (A.F.); (N.P.)
| |
Collapse
|
16
|
Qiu J, Di Fiore JM, Krishnamurthi N, Indic P, Carroll JL, Claure N, Kemp JS, Dennery PA, Ambalavanan N, Weese-Mayer DE, Hibbs AM, Martin RJ, Bancalari E, Hamvas A, Randall Moorman J, Lake DE. Highly comparative time series analysis of oxygen saturation and heart rate to predict respiratory outcomes in extremely preterm infants. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.01.24.24301724. [PMID: 38343830 PMCID: PMC10854343 DOI: 10.1101/2024.01.24.24301724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Objective Highly comparative time series analysis (HCTSA) is a novel approach involving massive feature extraction using publicly available code from many disciplines. The Prematurity-Related Ventilatory Control (Pre-Vent) observational multicenter prospective study collected bedside monitor data from > 700 extremely preterm infants to identify physiologic features that predict respiratory outcomes. We calculated a subset of 33 HCTSA features on > 7M 10-minute windows of oxygen saturation (SPO2) and heart rate (HR) from the Pre-Vent cohort to quantify predictive performance. This subset included representatives previously identified using unsupervised clustering on > 3500 HCTSA algorithms. Performance of each feature was measured by individual area under the receiver operating curve (AUC) at various days of life and binary respiratory outcomes. These were compared to optimal PreVent physiologic predictor IH90 DPE, the duration per event of intermittent hypoxemia events with threshold of 90%. Main Results The top HCTSA features were from a cluster of algorithms associated with the autocorrelation of SPO2 time series and identified low frequency patterns of desaturation as high risk. These features had comparable performance to and were highly correlated with IH90_DPE but perhaps measure the physiologic status of an infant in a more robust way that warrants further investigation. The top HR HCTSA features were symbolic transformation measures that had previously been identified as strong predictors of neonatal mortality. HR metrics were only important predictors at early days of life which was likely due to the larger proportion of infants whose outcome was death by any cause. A simple HCTSA model using 3 top features outperformed IH90_DPE at day of life 7 (.778 versus .729) but was essentially equivalent at day of life 28 (.849 versus .850). These results validated the utility of a representative HCTSA approach but also provides additional evidence supporting IH90_DPE as an optimal predictor of respiratory outcomes.
Collapse
Affiliation(s)
- Jiaxing Qiu
- Department of Medicine, Division of Cardiology, University of Virginia School of Medicine, Charlottesville, VA
| | - Juliann M Di Fiore
- Department of Pediatrics, Case Western Reserve University School of Medicine, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH
| | - Narayanan Krishnamurthi
- Department of Pediatrics, Division of Autonomic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Premananda Indic
- Department of Electrical Engineering, University of Texas at Tyler, Tyler, TX
| | - John L Carroll
- Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Hospital, Little Rock, AK
| | - Nelson Claure
- Department of Pediatrics, Division of Neonatology, University of Miami Miller School of Medicine, Miami, FL
| | - James S Kemp
- Department of Pediatrics, Division of Pediatric Pulmonology, Washington University School of Medicine, St. Louis, MO
| | - Phyllis A Dennery
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO
| | - Namasivayam Ambalavanan
- Department of Pediatrics, Division of Neonatology, University of Alabama at Birmingham, Birmingham, AL
| | - Debra E Weese-Mayer
- Department of Pediatrics, Division of Autonomic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Anna Maria Hibbs
- Department of Pediatrics, Case Western Reserve University School of Medicine, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH
| | - Richard J Martin
- Department of Pediatrics, Case Western Reserve University School of Medicine, University Hospitals Rainbow Babies and Children's Hospital, Cleveland, OH
| | - Eduardo Bancalari
- Department of Pediatrics, Division of Neonatology, University of Miami Miller School of Medicine, Miami, FL
| | - Aaron Hamvas
- Ann and Robert H. Lurie Children's Hospital and Northwestern University Department of Pediatrics, Chicago, IL
| | - J Randall Moorman
- Department of Medicine, Division of Cardiology, University of Virginia School of Medicine, Charlottesville, VA
| | - Douglas E Lake
- Department of Medicine, Division of Cardiology, University of Virginia School of Medicine, Charlottesville, VA
| |
Collapse
|
17
|
Sullivan BA, Beam K, Vesoulis ZA, Aziz KB, Husain AN, Knake LA, Moreira AG, Hooven TA, Weiss EM, Carr NR, El-Ferzli GT, Patel RM, Simek KA, Hernandez AJ, Barry JS, McAdams RM. Transforming neonatal care with artificial intelligence: challenges, ethical consideration, and opportunities. J Perinatol 2024; 44:1-11. [PMID: 38097685 PMCID: PMC10872325 DOI: 10.1038/s41372-023-01848-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/21/2023] [Accepted: 11/30/2023] [Indexed: 12/17/2023]
Abstract
Artificial intelligence (AI) offers tremendous potential to transform neonatology through improved diagnostics, personalized treatments, and earlier prevention of complications. However, there are many challenges to address before AI is ready for clinical practice. This review defines key AI concepts and discusses ethical considerations and implicit biases associated with AI. Next we will review literature examples of AI already being explored in neonatology research and we will suggest future potentials for AI work. Examples discussed in this article include predicting outcomes such as sepsis, optimizing oxygen therapy, and image analysis to detect brain injury and retinopathy of prematurity. Realizing AI's potential necessitates collaboration between diverse stakeholders across the entire process of incorporating AI tools in the NICU to address testability, usability, bias, and transparency. With multi-center and multi-disciplinary collaboration, AI holds tremendous potential to transform the future of neonatology.
Collapse
Affiliation(s)
- Brynne A Sullivan
- Division of Neonatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Kristyn Beam
- Department of Neonatology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Zachary A Vesoulis
- Division of Newborn Medicine, Department of Pediatrics, Washington University in St. Louis, St. Louis, MO, USA
| | - Khyzer B Aziz
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University, Baltimore, MD, USA
| | - Ameena N Husain
- Division of Neonatology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Lindsey A Knake
- Division of Neonatology, Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Alvaro G Moreira
- Division of Neonatology, Department of Pediatrics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Thomas A Hooven
- Division of Newborn Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Elliott M Weiss
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
- Treuman Katz Center for Pediatric Bioethics and Palliative Care, Seattle Children's Research Institute, Seattle, WA, USA
| | - Nicholas R Carr
- Division of Neonatology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - George T El-Ferzli
- Division of Neonatology, Department of Pediatrics, Ohio State University, Nationwide Children's Hospital, Columbus, OH, USA
| | - Ravi M Patel
- Division of Neonatology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Kelsey A Simek
- Division of Neonatology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Antonio J Hernandez
- Division of Neonatology, Department of Pediatrics, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - James S Barry
- Division of Neonatology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Ryan M McAdams
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
| |
Collapse
|
18
|
Rauf S, Shah S, Bibi Z, Munir R, Jiskani H, Ahmad S, Mir Shah SA, Bibi A, Fasih Ahmad H, Hussain K, Ariff S, Ambreen G. Association of Caffeine Daily Dose With Respiratory Outcomes in Preterm Neonates: A Retrospective Cohort Study. INQUIRY : A JOURNAL OF MEDICAL CARE ORGANIZATION, PROVISION AND FINANCING 2024; 61:469580241248098. [PMID: 38666733 PMCID: PMC11055476 DOI: 10.1177/00469580241248098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/29/2024]
Abstract
Apnea and poor respiratory drive increase the risk of extubation failure (EF) and prolonged invasive mechanical ventilation (IMV) in preterm neonates (pre-nates) with respiratory distress. Caffeine citrate (CC) is often prescribed for pre-nates in doses of 5-10 mg/kg in 24 h. This study aimed to evaluate the most effective dosage regimen (5 mg/kg/day vs >5-10 mg/kg/day) to prevent apnea and EF with minimal caffeine-associated potential side effects (CC-APSEs) in pre-nates. This one-year retrospective cohort study included all the eligible neonates admitted to NICU and received CC-therapy till 28 days of life (DOL) or discharge. Based on CC-daily dose formed LD-caffeine-group (5 mg/kg/day) and HD-caffeine-group (>5-10 mg/kg/day). Antenatal, prenatal, and postnatal characteristics, CC-regimen, comorbidities, and CC-APSEs were compared between the groups. Predictors of apnea and EF were analyzed through logistic regression. There were 181 and 72 neonates in the LD and HD-caffeine-groups respectively. In HD-caffeine-group daily CC-dose was 7 to 7.5 mg/kg/day in 93% of neonates and >7.5 to 10 mg/kg/day in only 7%. Significantly fewer neonates experienced apnea and EF in the HD-caffeine-group till 28DOL or discharge. This difference was even greater in the subgroup of ≤28 weeks GA (15.6% vs 40.0%; P < .01). In HD-caffeine-group the incidence of severe/moderate-BPD was significantly lower and the frequency of CC-APSEs was higher. Multivariate analysis showed that; the smaller the GA higher the risk of apnea (AOR = 0.510, 95% CI 0.483-0.999) and EF (AOR = 0.787, 95% CI 0.411-0.997). The HD-caffeine was inversely associated with developing apnea (AOR = 0.244, 95% CI 0.053-0.291) and EF (AOR = 0.103, 95% CI 0.098-2.976). IMV-duration before extubation (AOR = 2.229, 95% CI 1.672-2.498) and severe/moderate-BPD (AOR = 2.410, 95%CI 1.104-2.952) had a high risk of EF. Initiating early HD-caffeine may prevent apnea and extubation failure in preterm neonates. Optimization of caffeine initiation time and dosages can be a safe and feasible approach to decrease the burden of neonatal respiratory morbidities.
Collapse
Affiliation(s)
| | - Samar Shah
- Naseer Teaching Hospital PESHAWAR, Peshawar, Pakistan
| | - Zainab Bibi
- Aga Khan University Hospital, Karachi, Pakistan
| | | | | | - Saeed Ahmad
- Aga Khan University Hospital, Karachi, Pakistan
| | | | - Aysha Bibi
- Dow University of Health Sciences, Karachi, Pakistan
| | | | | | | | - Gul Ambreen
- Aga Khan University Hospital, Karachi, Pakistan
| |
Collapse
|
19
|
Daneshtalab A, Shadravan M, Mobasherzadeh Mahani A, Dehghani A, Sharifzadeh Kermani M. Risk Factors for Retinopathy of Prematurity in Preterm Infants in Kerman, Iran. J Ophthalmic Vis Res 2024; 19:51-57. [PMID: 38638625 PMCID: PMC11022032 DOI: 10.18502/jovr.v19i1.15437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 07/24/2023] [Indexed: 04/20/2024] Open
Abstract
Purpose Retinopathy of prematurity (ROP) is the main cause of blindness in premature infants. Despite developments in neonatal care and management guidelines, ROP is becoming increasingly prevalent worldwide. Hence, the identification of risk factors for ROP is critical to diminish the burden of the disease. Methods This cross-sectional study included all infants with gestational age ≤ 36 weeks referred to the ophthalmology clinic at Shafa hospital, Kerman, Iran from 2014 to 2015. Ophthalmologic examinations were performed followed by demographic and ophthalmic data collection and analysis. Results A total of 579 preterm neonates were screened including 325 boys and 254 girls. The incidence of ROP was 17.96%. Mean birth weight (BW) and gestational age (GA) were 1668.0 grams and 31.2 weeks, respectively. The results indicated that BW, GA, duration of hospitalization and oxygen therapy were significantly related to the development of ROP, however, after multivariate logistic regression analysis, only BW and duration of hospitalization remained significant. There were no significant associations between gender, type of delivery, or assisted reproductive technologies, and ROP (P = 0.461, 0.461, and 0.826, respectively). Conclusion BW and duration of hospitalization were significant risk factors for ROP in the current study. BW was also strongly associated with the need for therapy.
Collapse
Affiliation(s)
- Arash Daneshtalab
- Clinical Research Development Unit, Shafa Hospital, Kerman University of Medical Sciences, Kerman, Iran
| | - Mahla Shadravan
- Clinical Research Development Unit, Shafa Hospital, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Azam Dehghani
- Clinical Research Development Unit, Afzalipour Hospital, Kerman University of Medical Sciences, Kerman, Iran
| | - Mahdi Sharifzadeh Kermani
- Clinical Research Development Unit, Shafa Hospital, Kerman University of Medical Sciences, Kerman, Iran
| |
Collapse
|
20
|
Prasad N, Dubey A, Kumar K, Shrivastava J. Role of fetal hemoglobin in the development and progression of retinopathy of prematurity in preterm infants. Indian J Ophthalmol 2023; 71:3478-3483. [PMID: 37870010 PMCID: PMC10752310 DOI: 10.4103/ijo.ijo_274_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 09/10/2023] [Accepted: 09/22/2023] [Indexed: 10/24/2023] Open
Abstract
Purpose The objective of this study was to find the association between fetal hemoglobin (HbF) concentration and retinopathy of prematurity (ROP) in preterm infants. Methods In this observational, prospective, longitudinal study, a total of 410 preterm infants with <36 gestational weeks and <2.5 kg birth weight, who were attending ROP clinic in a tertiary care hospital of central India for 1 year duration were included. Dilated fundus examination was done as per ROP screening guidelines, and ROP was staged as per international classification for retinopathy of prematurity (ICROP) classification, 2021. HbF (%) was measured with high-performance liquid chromatography, and data was analyzed statistically. The relationship between HbF (%) and ROP was evaluated. Those infants who had ROP were further divided into treatment-requiring and non-treatment-requiring groups and HbF was compared in these groups at the first visit and after 1-month follow-up period. The outcome of ROP was studied with HbF levels. Results A total of 410 preterm infants were included, out of which 110 infants had ROP (26.8%). Infants with ROP had significantly lower percentage of HbF with gestational age groups and birth weight groups, compared to infants without ROP. Higher percentage of HbF was associated with a lower prevalence of ROP. Higher concentration of HbF was found in the ROP infants who regressed spontaneously without treatment and less concentration was found in those who progressed to a severe disease and those who required treatment. The predictive ability of HbF (%) was 0.976 for ROP. Conclusion Low fraction of HbF was found to be significantly associated with the development and progression of ROP.
Collapse
Affiliation(s)
- Nishi Prasad
- Department of Ophthalmology, Gandhi Medical College, Bhopal, Madhya Pradesh, India
| | - Aditi Dubey
- Department of Ophthalmology, Gandhi Medical College, Bhopal, Madhya Pradesh, India
| | - Kavita Kumar
- Department of Ophthalmology, Gandhi Medical College, Bhopal, Madhya Pradesh, India
| | - Jyotsna Shrivastava
- Department of Pediatrics, Gandhi Medical College, Bhopal, Madhya Pradesh, India
| |
Collapse
|
21
|
Dormishian A, Schott A, Aguilar AC, Jimenez V, Bancalari E, Tolosa J, Claure N. Etiology and Mechanism of Intermittent Hypoxemia Episodes in Spontaneously Breathing Extremely Premature Infants. J Pediatr 2023; 262:113623. [PMID: 37473988 PMCID: PMC10794559 DOI: 10.1016/j.jpeds.2023.113623] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 07/06/2023] [Accepted: 07/12/2023] [Indexed: 07/22/2023]
Abstract
OBJECTIVE To evaluate the mechanisms leading to intermittent hypoxemia (IH) episodes in spontaneously breathing extremely premature infants at 32 weeks and 36 weeks postmenstrual age (PMA). METHODS We studied spontaneously breathing premature infants born at 23-28 weeks of gestational age who presented with IH episodes while on noninvasive respiratory support at 32 or 36 weeks PMA. Daytime recordings of arterial oxygen saturation (SpO2), esophageal pressure, respiratory inductive plethysmography of the abdomen, chest wall, and their sum were obtained during 4 hours at 32 weeks and 36 weeks PMA. IH episodes (SpO2 <90% for ≥5 seconds) and severe IH episodes (SpO2 < 80% for ≥5 seconds) were classified as resulting from apnea, active exhalation and breath holding, reduced tidal volume (VT), or reduced respiratory rate (RR) during the preceding 60 seconds. RESULTS Fifty-one infants with a mean gestational age of 25.9 ± 1.5 weeks and a mean birth weight of 846 ± 185 g were included. Of these, 31 and 41 were included in the analysis at 32 weeks and 36 weeks PMA, respectively. At both 32 weeks and 36 weeks PMA, greater proportions of all IH episodes and severe IH episodes were associated with active exhalation and breath holding than with apnea, reduced RR, or reduced VT. The severity and duration of the IH episodes did not differ between mechanisms. CONCLUSIONS In this group of premature infants, the predominant mechanism associated with daytime IH was active exhalation and breath holding. This etiology is more closely associated with behavioral factors than abnormal respiratory control and can have implications for prevention.
Collapse
Affiliation(s)
- Alaleh Dormishian
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine and Holtz Children's Hospital at the University of Miami/Jackson Memorial Medical Center, Miami, FL; Department of Biomedical Engineering, College of Engineering, University of Miami, Miami, FL
| | - Alini Schott
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine and Holtz Children's Hospital at the University of Miami/Jackson Memorial Medical Center, Miami, FL
| | - Ana Cecilia Aguilar
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine and Holtz Children's Hospital at the University of Miami/Jackson Memorial Medical Center, Miami, FL
| | - Vicente Jimenez
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine and Holtz Children's Hospital at the University of Miami/Jackson Memorial Medical Center, Miami, FL
| | - Eduardo Bancalari
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine and Holtz Children's Hospital at the University of Miami/Jackson Memorial Medical Center, Miami, FL
| | - Jose Tolosa
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine and Holtz Children's Hospital at the University of Miami/Jackson Memorial Medical Center, Miami, FL
| | - Nelson Claure
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine and Holtz Children's Hospital at the University of Miami/Jackson Memorial Medical Center, Miami, FL; Department of Biomedical Engineering, College of Engineering, University of Miami, Miami, FL.
| |
Collapse
|
22
|
Alarcon-Martinez T, Latremouille S, Kovacs L, Kearney RE, Sant'Anna GM, Shalish W. Clinical usefulness of reintubation criteria in extremely preterm infants: a cohort study. Arch Dis Child Fetal Neonatal Ed 2023; 108:643-648. [PMID: 37193586 DOI: 10.1136/archdischild-2022-325245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 05/02/2023] [Indexed: 05/18/2023]
Abstract
OBJECTIVE To describe the thresholds of instability used by clinicians at reintubation and evaluate the accuracy of different combinations of criteria in predicting reintubation decisions. DESIGN Secondary analysis using data obtained from the prospective observational Automated Prediction of Extubation Readiness study (NCT01909947) between 2013 and 2018. SETTING Multicentre (three neonatal intensive care units). PATIENTS Infants with birth weight ≤1250 g, mechanically ventilated and undergoing their first planned extubation were included. INTERVENTIONS After extubation, hourly O2 requirements, blood gas values and occurrence of cardiorespiratory events requiring intervention were recorded for 14 days or until reintubation, whichever came first. MAIN OUTCOME MEASURES Thresholds at reintubation were described and grouped into four categories: increased O2, respiratory acidosis, frequent cardiorespiratory events and severe cardiorespiratory events (requiring positive pressure ventilation). An automated algorithm was used to generate multiple combinations of criteria from the four categories and compute their accuracies in capturing reintubated infants (sensitivity) without including non-reintubated infants (specificity). RESULTS 55 infants were reintubated (median gestational age 25.2 weeks (IQR 24.5-26.1 weeks), birth weight 750 g (IQR 640-880 g)), with highly variable thresholds at reintubation. After extubation, reintubated infants had significantly greater O2 needs, lower pH, higher pCO2 and more frequent and severe cardiorespiratory events compared with non-reintubated infants. After evaluating 123 374 combinations of reintubation criteria, Youden indices ranged from 0 to 0.46, suggesting low accuracy. This was primarily attributable to the poor agreement between clinicians on the number of cardiorespiratory events at which to reintubate. CONCLUSIONS Criteria used for reintubation in clinical practice are highly variable, with no combination accurately predicting the decision to reintubate.
Collapse
Affiliation(s)
- Tugba Alarcon-Martinez
- Pediatrics, McGill University Health Centre, Montreal, Quebec, Canada
- Neonatal Services, The Royal Women's Hospital, Melbourne, VIC, Australia
| | | | - Lajos Kovacs
- Department of Neonatology, Jewish General Hospital, Montreal, Quebec, Canada
| | - Robert E Kearney
- Biomedical Engineering, McGill University, Montreal, Quebec, Canada
| | | | - Wissam Shalish
- Pediatrics, McGill University Health Centre, Montreal, Quebec, Canada
| |
Collapse
|
23
|
Marques KA, Bruschettini M, Roehr CC, Davis PG, Fiander M, Soll R. Methylxanthine for the prevention and treatment of apnea in preterm infants. Cochrane Database Syst Rev 2023; 10:CD013830. [PMID: 37905735 PMCID: PMC10617014 DOI: 10.1002/14651858.cd013830.pub2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
BACKGROUND Very preterm infants often require respiratory support and are therefore exposed to an increased risk of chronic lung disease and later neurodevelopmental disability. Although methylxanthines are widely used to prevent and treat apnea associated with prematurity and to facilitate extubation, there is uncertainty about the benefits and harms of different types of methylxanthines. OBJECTIVES To assess the effects of methylxanthines on the incidence of apnea, death, neurodevelopmental disability, and other longer-term outcomes in preterm infants (1) at risk for or with apnea, or (2) undergoing extubation. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, two other databases, and three trial registers (November 2022). SELECTION CRITERIA We included randomized trials in preterm infants, in which methylxanthines (aminophylline, caffeine, or theophylline) were compared to placebo or no treatment for any indication (i.e. prevention of apnea, treatment of apnea, or prevention of re-intubation). DATA COLLECTION AND ANALYSIS We used standard Cochrane methods and GRADE to assess the certainty of evidence. MAIN RESULTS We included 18 studies (2705 infants), evaluating the use of methylxanthine in preterm infants for: any indication (one study); prevention of apnea (six studies); treatment of apnea (five studies); and to prevent re-intubation (six studies). Death or major neurodevelopmental disability (DMND) at 18 to 24 months. Only the Caffeine for Apnea of Prematurity (CAP) study (enrolling 2006 infants) reported on this outcome. Overall, caffeine probably reduced the risk of DMND in preterm infants treated with caffeine for any indication (risk ratio (RR) 0.87, 95% confidence interval (CI) 0.78 to 0.97; risk difference (RD) -0.06, 95% CI -0.10 to -0.02; number needed to treat for an additional beneficial outcome (NNTB) 16, 95% CI 10 to 50; 1 study, 1869 infants; moderate-certainty evidence). No other trials reported DMND. Results from the CAP trial regarding DMND at 18 to 24 months are less precise when analyzed based on treatment indication. Caffeine probably results in little or no difference in DMND in infants treated for prevention of apnea (RR 1.00, 95% CI 0.80 to 1.24; RD -0.00, 95% CI -0.10 to 0.09; 1 study, 423 infants; moderate-certainty evidence) and probably results in a slight reduction in DMND in infants treated for apnea of prematurity (RR 0.85, 95% CI 0.71 to 1.01; RD -0.06, 95% CI -0.13 to 0.00; NNTB 16, 95% CI 7 to > 1000; 1 study, 767 infants; moderate-certainty evidence) or to prevent re-intubation (RR 0.85, 95% CI 0.73 to 0.99; RD -0.08, 95% CI -0.15 to -0.00; NNTB 12, 95% CI 6 to >1000; 1 study, 676 infants; moderate-certainty evidence). Death. In the overall analysis of any methylxanthine treatment for any indication, methylxanthine used for any indication probably results in little or no difference in death at hospital discharge (RR 0.99, 95% CI 0.71 to 1.37; I2 = 0%; RD -0.00, 95% CI -0.02 to 0.02; I2 = 5%; 7 studies, 2289 infants; moderate-certainty evidence). Major neurodevelopmental disability at 18 to 24 months. In the CAP trial, caffeine probably reduced the risk of major neurodevelopmental disability at 18 to 24 months (RR 0.85, 95% CI 0.76 to 0.96; RD -0.06, 95% CI -0.10 to -0.02; NNTB 16, 95% CI 10 to 50; 1 study, 1869 infants; moderate-certainty evidence), including a reduction in the risk of cerebral palsy or gross motor disability (RR 0.60, 95% CI 0.41 to 0.88; RD -0.03, 95% CI -0.05 to -0.01; NNTB 33, 95% CI 20 to 100; 1 study, 1810 infants; moderate-certainty evidence) and a marginal reduction in the risk of developmental delay (RR 0.88, 95% CI 0.78 to 1.00; RD -0.05, 95% CI -0.09 to -0.00; NNTB 20, 95% CI 11 to > 1000; 1 study, 1725 infants; moderate-certainty evidence). Any apneic episodes, failed apnea reduction after two to seven days (< 50% reduction in apnea) (for infants treated with apnea), and need for positive-pressure ventilation after institution of treatment. Methylxanthine used for any indication probably reduces the occurrence of any apneic episodes (RR 0.31, 95% CI 0.18 to 0.52; I2 = 47%; RD -0.38, 95% CI -0.51 to -0.25; I2 = 49%; NNTB 3, 95% CI 2 to 4; 4 studies, 167 infants; moderate-certainty evidence), failed apnea reduction after two to seven days (RR 0.48, 95% CI 0.33 to 0.70; I2 = 0%; RD -0.31, 95% CI -0.44 to -0.17; I2 = 53%; NNTB 3, 95% CI 2 to 6; 4 studies, 174 infants; moderate-certainty evidence), and may reduce receipt of positive-pressure ventilation after institution of treatment (RR 0.61, 95% CI 0.39 to 0.96; I2 = 0%; RD -0.06, 95% CI -0.11 to -0.01; I2 = 49%; NNTB 16, 95% CI 9 to 100; 9 studies, 373 infants; low-certainty evidence). Chronic lung disease. Methylxanthine used for any indication reduces chronic lung disease (defined as the use of supplemental oxygen at 36 weeks' postmenstrual age) (RR 0.77, 95% CI 0.69 to 0.85; I2 = 0%; RD -0.10, 95% CI -0.14 to -0.06; I2 = 18%; NNTB 10, 95% CI 7 to 16; 4 studies, 2142 infants; high-certainty evidence). Failure to extubate or the need for re-intubation within one week after initiation of therapy. Methylxanthine used for the prevention of re-intubation probably results in a large reduction in failed extubation compared with no treatment (RR 0.48, 95% CI 0.32 to 0.71; I2 = 0%; RD -0.27, 95% CI -0.39 to -0.15; I2 = 69%; NNTB 4, 95% CI 2 to 6; 6 studies, 197 infants; moderate-certainty evidence). AUTHORS' CONCLUSIONS Caffeine probably reduces the risk of death, major neurodevelopmental disability at 18 to 24 months, and the composite outcome DMND at 18 to 24 months. Administration of any methylxanthine to preterm infants for any indication probably leads to a reduction in the risk of any apneic episodes, failed apnea reduction after two to seven days, cerebral palsy, developmental delay, and may reduce receipt of positive-pressure ventilation after institution of treatment. Methylxanthine used for any indication reduces chronic lung disease (defined as the use of supplemental oxygen at 36 weeks' postmenstrual age).
Collapse
Affiliation(s)
- Keri A Marques
- Division of Neonatal-Perinatal Medicine, University of Vermont, Burlington, Vermont, USA
| | - Matteo Bruschettini
- Paediatrics, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
- Cochrane Sweden, Department of Research and Education, Lund University, Skåne University Hospital, Lund, Sweden
| | - Charles C Roehr
- National Perinatal Epidemiology Unit, Clinical Trials Unit, Nuffield Department of Population Health, Medical Sciences Division, University of Oxford, Oxford, UK
- Faculty of Health Sciences, University of Bristol, Bristol, UK
- Newborn Services, Southmead Hospital, North Bristol Trust, Southmead Rd, Bristol BS10 5NB, Bristol, UK
| | - Peter G Davis
- Newborn Research Centre and Neonatal Services, The Royal Women's Hospital, Melbourne, Australia
| | | | - Roger Soll
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Larner College of Medicine at the University of Vermont, Burlington, Vermont, USA
| |
Collapse
|
24
|
Moresco L, Sjögren A, Marques KA, Soll R, Bruschettini M. Caffeine versus other methylxanthines for the prevention and treatment of apnea in preterm infants. Cochrane Database Syst Rev 2023; 10:CD015462. [PMID: 37791592 PMCID: PMC10548499 DOI: 10.1002/14651858.cd015462.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
BACKGROUND Methylxanthines, including caffeine, theophylline, and aminophylline, work as stimulants of the respiratory drive, and decrease apnea of prematurity, a developmental disorder common in preterm infants. In particular, caffeine has been reported to improve important clinical outcomes, including bronchopulmonary dysplasia (BPD) and neurodevelopmental disability. However, there is uncertainty regarding the efficacy of caffeine compared to other methylxanthines. OBJECTIVES To assess the effects of caffeine compared to aminophylline or theophylline in preterm infants at risk of apnea, with apnea, or in the peri-extubation phase. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, Epistemonikos, the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP), and clinicaltrials.gov in February 2023. We also checked the reference lists of relevant articles to identify additional studies. SELECTION CRITERIA Studies: randomized controlled trials (RCTs) and quasi-RCTs Participants: infants born before 34 weeks of gestation for prevention and extubation trials, and infants born before 37 weeks of gestation for treatment trials Intervention and comparison: caffeine versus theophylline or caffeine versus aminophylline. We included all doses and duration of treatment. DATA COLLECTION AND ANALYSIS We used standard methodological procedures expected by Cochrane. We evaluated treatment effects using a fixed-effect model with risk ratio (RR), risk difference (RD), and 95% confidence intervals (CI) for categorical data, and mean, standard deviation, and mean difference for continuous data. We used the GRADE approach to evaluate the certainty of evidence. MAIN RESULTS We included 22 trials enrolling 1776 preterm infants. The indication for treatment was prevention of apnea in three studies, treatment of apnea in 13 studies, and extubation management in three studies. In three studies, there were multiple indications for treatment, and in one study, the indication for treatment was unclear. In 19 included studies, the infants had a mean gestational age between 28 and 32 weeks and a mean birth weight between 1000 g and 1500 g. One study's participants had a mean gestational age of more than 32 weeks, and two studies had participants with a mean birth weight of 1500 g or more. Caffeine administrated for any indication may result in little to no difference in all-cause mortality prior to hospital discharge compared to other methylxanthines (RR 1.12, 95% CI 0.68 to 1.84; RD 0.02, 95% CI -0.05 to 0.08; 2 studies, 396 infants; low-certainty evidence). Only one study enrolling 79 infants reported components of the outcome moderate to severe neurodevelopmental disability at 18 to 26 months. The evidence is very uncertain about the effect of caffeine on cognitive developmental delay compared to other methylxanthines (RR 0.17, 95% CI 0.02 to 1.37; RD -0.12, 95% CI -0.24 to 0.01; 1 study, 79 infants; very low-certainty evidence). The evidence is very uncertain about the effect of caffeine on language developmental delay compared to other methylxanthines (RR 0.76, 95% CI 0.37 to 1.58; RD -0.07, 95% CI -0.27 to 0.12; 1 study, 79 infants; very low-certainty evidence). The evidence is very uncertain about the effect of caffeine on motor developmental delay compared to other methylxanthines (RR 0.50, 95% CI 0.13 to 1.96; RD -0.07, 95% CI -0.21 to 0.07; 1 study, 79 infants; very low-certainty evidence). The evidence is very uncertain about the effect of caffeine on visual and hearing impairment compared to other methylxanthines. At 24 months of age, visual impairment was seen in 8 out of 11 infants and 10 out of 11 infants in the caffeine and other methylxanthines groups, respectively. Hearing impairment was seen in 2 out of 5 infants and 1 out of 1 infant in the caffeine and other methylxanthines groups, respectively. No studies reported the outcomes cerebral palsy, gross motor disability, and mental development. Compared to other methylxanthines, caffeine may result in little to no difference in BPD/chronic lung disease, defined as 28 days of oxygen exposure at 36 weeks' postmenstrual age (RR 1.40, 95% CI 0.92 to 2.11; RD 0.04, 95% CI -0.01 to 0.09; 3 studies, 481 infants; low-certainty evidence). The evidence is very uncertain about the effect of caffeine on side effects (tachycardia, agitation, or feed intolerance) leading to a reduction in dose or withholding of methylxanthines compared to other methylxanthines (RR 0.17, 95% CI 0.02 to 1.32; RD -0.29, 95% CI -0.57 to -0.02; 1 study, 30 infants; very low-certainty evidence). Caffeine may result in little to no difference in duration of hospital stay compared to other methylxanthines (median (interquartile range): caffeine 43 days (27.5 to 61.5); other methylxanthines 39 days (28 to 55)). No studies reported the outcome seizures. AUTHORS' CONCLUSIONS Although caffeine has been shown to improve important clinical outcomes, in the few studies that compared caffeine to other methylxanthines, there might be little to no difference in mortality, bronchopulmonary dysplasia, and duration of hospital stay. The evidence is very uncertain about the effect of caffeine compared to other methylxanthines on long-term development and side effects. Although caffeine or other methylxanthines are widely used in preterm infants, there is little direct evidence to support the choice of which methylxanthine to use. More research is needed, especially on extremely preterm infants born before 28 weeks of gestation. Data from four ongoing studies might provide more evidence on the effects of caffeine or other methylxanthines.
Collapse
Affiliation(s)
- Luca Moresco
- Pediatric and Neonatology Unit, Ospedale San Paolo, Savona, Italy
| | | | - Keri A Marques
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Louisville, Louisville, Kentucky, USA
| | - Roger Soll
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Larner College of Medicine at the University of Vermont, Burlington, Vermont, USA
| | - Matteo Bruschettini
- Paediatrics, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
- Cochrane Sweden, Department of Research and Education, Lund University, Skåne University Hospital, Lund, Sweden
| |
Collapse
|
25
|
Raffay TM, Di Fiore JM, Chen Z, Sánchez-Illana Á, Vento M, Piñeiro-Ramos JD, Kuligowski J, Martin RJ, Tatsuoka C, Minich NM, MacFarlane PM, Hibbs AM. Hypoxemia events in preterm neonates are associated with urine oxidative biomarkers. Pediatr Res 2023; 94:1444-1450. [PMID: 37188801 DOI: 10.1038/s41390-023-02646-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Intermittent hypoxemia (IH) events are common in preterm neonates and are associated with adverse outcomes. Animal IH models can induce oxidative stress. We hypothesized that an association exists between IH and elevated peroxidation products in preterm neonates. METHODS Time in hypoxemia, frequency of IH, and duration of IH events were assessed from a prospective cohort of 170 neonates (<31 weeks gestation). Urine was collected at 1 week and 1 month. Samples were analyzed for lipid, protein, and DNA oxidation biomarkers. RESULTS At 1 week, adjusted multiple quantile regression showed positive associations between several hypoxemia parameters with various individual quantiles of isofurans, neurofurans, dihomo-isoprostanes, dihomo-isofurans, and ortho-tyrosine and a negative correlation with dihomo-isoprostanes and meta-tyrosine. At 1 month, positive associations were found between several hypoxemia parameters with quantiles of isoprostanes, dihomo-isoprostanes and dihomo-isofurans and a negative correlation with isoprostanes, isofurans, neuroprostanes, and meta-tyrosine. CONCLUSIONS Preterm neonates experience oxidative damage to lipids, proteins, and DNA that can be analyzed from urine samples. Our single-center data suggest that specific markers of oxidative stress may be related to IH exposure. Future studies are needed to better understand mechanisms and relationships to morbidities of prematurity. IMPACT Hypoxemia events are frequent in preterm infants and are associated with poor outcomes. The mechanisms by which hypoxemia events result in adverse neural and respiratory outcomes may include oxidative stress to lipids, proteins, and DNA. This study begins to explore associations between hypoxemia parameters and products of oxidative stress in preterm infants. Oxidative stress biomarkers may assist in identifying high-risk neonates.
Collapse
Affiliation(s)
- Thomas M Raffay
- Department of Pediatrics, Division of Neonatology, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA.
| | - Juliann M Di Fiore
- Department of Pediatrics, Division of Neonatology, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| | - Zhengyi Chen
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Ángel Sánchez-Illana
- Neonatal Research Unit, Health Research Institute La Fe (IISLAFE), Valencia, Spain
- Department of Analytical Chemistry, Universtitat de València, Burjassot, Spain
| | - Maximo Vento
- Neonatal Research Unit, Health Research Institute La Fe (IISLAFE), Valencia, Spain
- Division of Neonatology, University & Polytechnic Hospital La Fe (HULAFE), Valencia, Spain
| | | | - Julia Kuligowski
- Neonatal Research Unit, Health Research Institute La Fe (IISLAFE), Valencia, Spain
| | - Richard J Martin
- Department of Pediatrics, Division of Neonatology, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| | | | - Nori M Minich
- Department of Pediatrics, Division of Neonatology, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| | - Peter M MacFarlane
- Department of Pediatrics, Division of Neonatology, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| | - Anna Maria Hibbs
- Department of Pediatrics, Division of Neonatology, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| |
Collapse
|
26
|
MacFarlane PM, Martin RJ, Di Fiore JM, Raffay TM, Tatsuoka C, Chen Z, Minich N, Quintas G, Sánchez-Illana Á, Kuligowski J, Piñeiro-Ramos JD, Vento M, Hibbs AM. Plasma serotonergic biomarkers are associated with hypoxemia events in preterm neonates. Pediatr Res 2023; 94:1436-1443. [PMID: 37188799 DOI: 10.1038/s41390-023-02620-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/15/2023] [Accepted: 04/07/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Hypoxemia is a physiological manifestation of immature respiratory control in preterm neonates, which is likely impacted by neurotransmitter imbalances. We investigated relationships between plasma levels of the neurotransmitter serotonin (5-HT), metabolites of tryptophan (TRP), and parameters of hypoxemia in preterm neonates. METHODS TRP, 5-HT, 5-hydroxyindoleacetic acid (5-HIAA), and kynurenic acid (KA) were analyzed in platelet-poor plasma at ~1 week and ~1 month of life from a prospective cohort of 168 preterm neonates <31 weeks gestational age (GA). Frequency of intermittent hypoxemia (IH) events and percent time hypoxemic (<80%) were analyzed in a 6 h window after the blood draw. RESULTS At 1 week, infants with detectable plasma 5-HT had fewer IH events (OR (95% CI) = 0.52 (0.29, 0.31)) and less percent time <80% (OR (95% CI) = 0.54 (0.31, 0.95)) compared to infants with undetectable 5-HT. A similar relationship occurred at 1 month. At 1 week, infants with higher KA showed greater percent time <80% (OR (95% CI) = 1.90 (1.03, 3.50)). TRP, 5-HIAA or KA were not associated with IH frequency at either postnatal age. IH frequency and percent time <80% were positively associated with GA < 29 weeks. CONCLUSIONS Circulating neuromodulators 5-HT and KA might represent biomarkers of immature respiratory control contributing to hypoxemia in preterm neonates. IMPACT Hypoxemia events are frequent in preterm infants and are associated with poor outcomes. Mechanisms driving hypoxemia such as immature respiratory control may include central and peripheral imbalances in modulatory neurotransmitters. This study found associations between the plasma neuromodulators serotonin and kynurenic acid and parameters of hypoxemia in preterm neonates. Imbalances in plasma biomarkers affecting respiratory control may help identify neonates at risk of short- and long-term adverse outcomes.
Collapse
Affiliation(s)
- Peter Mathew MacFarlane
- Department of Pediatrics, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA.
| | - Richard John Martin
- Department of Pediatrics, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| | - Juliann Marie Di Fiore
- Department of Pediatrics, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| | - Thomas Michael Raffay
- Department of Pediatrics, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| | - Curtis Tatsuoka
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Zhengyi Chen
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Nori Minich
- Department of Pediatrics, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| | - Guillermo Quintas
- Health and Biomedicine, Leitat Technological Center, Carrer de la Innovació, 2, 08225, Terrassa, Spain
- Analytical Unit, Health Research Institute La Fe, Avda Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Ángel Sánchez-Illana
- Neonatal Research Unit, Health Research Institute La Fe (IISLAFE), University & Polytechnic Hospita La Fe (HULAFE), Valencia, Spain
- Department of Analytical Chemistry, Chemistry Faculty, Universtitat de València, Burjassot, Spain
| | - Julia Kuligowski
- Neonatal Research Unit, Health Research Institute La Fe (IISLAFE), University & Polytechnic Hospita La Fe (HULAFE), Valencia, Spain
| | - José David Piñeiro-Ramos
- Neonatal Research Unit, Health Research Institute La Fe (IISLAFE), University & Polytechnic Hospita La Fe (HULAFE), Valencia, Spain
| | - Maximo Vento
- Neonatal Research Unit, Health Research Institute La Fe (IISLAFE), University & Polytechnic Hospita La Fe (HULAFE), Valencia, Spain
| | - Anna Maria Hibbs
- Department of Pediatrics, University Hospitals Rainbow Babies & Children's Hospital, Case Western Reserve University, Cleveland, OH, USA
| |
Collapse
|
27
|
Sotiropoulos JX, Oei JL. The role of oxygen in the development and treatment of bronchopulmonary dysplasia. Semin Perinatol 2023; 47:151814. [PMID: 37783577 DOI: 10.1016/j.semperi.2023.151814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Oxygen (O2) is crucial for both the development and treatment of one of the most important consequences of prematurity: bronchopulmonary dysplasia (BPD). In fetal life, the hypoxic environment is important for alveolar development and maturation. After birth, O2 becomes a double-edged sword. While O2 is needed to prevent hypoxia, it also causes oxidative stress leading to a plethora of morbidities, including retinopathy and BPD. The advent of continuous O2 monitoring with pulse oximeters has allowed clinicians to recognize the narrow therapeutic margins of oxygenation for the preterm infant, but more knowledge is needed to understand what these ranges are at different stages of the preterm infant's life, including at birth, in the neonatal intensive care unit and after hospital discharge. Future research, especially in innovative technologies such as automated O2 control and remote oximetry, will improve the understanding and treatment of the O2 needs of infants with BPD.
Collapse
Affiliation(s)
- J X Sotiropoulos
- School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Australia; Department of Newborn Care, The Royal Hospital for Women, Randwick, New South Wales, Australia; NHMRC Clinical Trials Centre, Faculty of Medicine and Health, University of Sydney, Australia
| | - J L Oei
- School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Australia; Department of Newborn Care, The Royal Hospital for Women, Randwick, New South Wales, Australia; NHMRC Clinical Trials Centre, Faculty of Medicine and Health, University of Sydney, Australia.
| |
Collapse
|
28
|
Ryan RM, Mukherjee D, Ford S, Lingappan K. Pharmacotherapy of BPD: Current status & future perspectives. Semin Perinatol 2023; 47:151819. [PMID: 37783580 DOI: 10.1016/j.semperi.2023.151819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Bronchopulmonary dysplasia (BPD) is a disease exclusive to prematurity and has changed in its definition since Northway first described it in 1967. There have been countless clinical trials evaluating the efficacy of drugs in the treatment and prevention of BPD in human subjects, and an even larger number of animal studies. Despite these, only a handful of drugs are used at the bedside today, primarily due to the lack of consistent efficacy seen in clinical trials or due to reports of adverse effects. This review summarizes the list of the most commonly used drugs and emerging new therapies which target BPD and BPD-related pulmonary hypertension (BPD-PH), including those which have shown promise in human trials but are not yet used routinely.
Collapse
Affiliation(s)
- Rita M Ryan
- UH Rainbow Babies & Children's Hospital and Case Western Reserve University, Cleveland, OH
| | - Devashis Mukherjee
- UH Rainbow Babies & Children's Hospital and Case Western Reserve University, Cleveland, OH.
| | - Stephanie Ford
- UH Rainbow Babies & Children's Hospital and Case Western Reserve University, Cleveland, OH
| | | |
Collapse
|
29
|
Haratbar SR, Chen L, Cheng Q, Singh D, Fathi F, Mohtasebi M, Liu X, Patwardhan A, Bhandary P, Bada HS, Yu G, Abu Jawdeh EG. The Impact of Intermittent Hypoxemia on Type 1 Retinopathy of Prematurity in Preterm Infants. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.09.25.23295922. [PMID: 37808800 PMCID: PMC10557831 DOI: 10.1101/2023.09.25.23295922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Background Intermittent hypoxemia (IH) may influence retinopathy of prematurity (ROP) development in preterm infants, however, previous studies had mixed results. This study aims to assess the influence and evaluate the predictive ability of IH measures on Type 1 ROP, a stage beyond which ROP treatment is indicated. Methods IH was quantified by continuously monitoring oxygen saturation (SpO2) using high-resolution pulse oximeters during the first 10 weeks of life. Statistical analyses assessed the relationship and predictive ability of weekly and cumulative IH variables for Type 1 ROP development. Results Univariate analyses suggested that IH measures are greater in infants with Type 1 ROP and are predictive of Type 1 ROP development. Multivariable logistic regression analyses revealed that cumulative IH of longer duration during certain postnatal periods are associated with Type 1 ROP development after adjusting for gestational age (GA) or birth weight (BW). Although area under the curve (AUC) analyses revealed added predictivity of cumulative IH variables above GA or BW, these increments in AUC were not statistically significant. Conclusions The duration of IH events was associated with Type 1 ROP development. Interventions for reducing the duration of IH events may potentially improve ROP outcomes.
Collapse
Affiliation(s)
| | - Li Chen
- Biostatistics and Bioinformatics Shared Resource Facility, Markey Cancer Center, University of Kentucky
| | - Qiang Cheng
- Institute for Biomedical Informatics, Department of Internal Medicine and Department of Computer Science
| | - Dara Singh
- Department of Biomedical Engineering, University of Kentucky
| | - Faraneh Fathi
- Department of Biomedical Engineering, University of Kentucky
| | | | - Xuhui Liu
- Department of Biomedical Engineering, University of Kentucky
| | | | - Prasad Bhandary
- Division of Neonatology, Department of Pediatrics, University of Kentucky
| | - Henrietta S. Bada
- Division of Neonatology, Department of Pediatrics, University of Kentucky
| | - Guoqiang Yu
- Department of Biomedical Engineering, University of Kentucky
| | - Elie G. Abu Jawdeh
- Division of Neonatology, Department of Pediatrics, University of Kentucky
| |
Collapse
|
30
|
Ambalavanan N, Weese-Mayer DE, Hibbs AM, Claure N, Carroll JL, Moorman JR, Bancalari E, Hamvas A, Martin RJ, Di Fiore JM, Indic P, Kemp JS, Dormishian A, Krahn KN, Qiu J, Dennery PA, Ratcliffe SJ, Troendle JF, Lake DE. Cardiorespiratory Monitoring Data to Predict Respiratory Outcomes in Extremely Preterm Infants. Am J Respir Crit Care Med 2023; 208:79-97. [PMID: 37219236 PMCID: PMC10870840 DOI: 10.1164/rccm.202210-1971oc] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 05/01/2023] [Indexed: 05/24/2023] Open
Abstract
Rationale: Immature control of breathing is associated with apnea, periodic breathing, intermittent hypoxemia, and bradycardia in extremely preterm infants. However, it is not clear if such events independently predict worse respiratory outcome. Objectives: To determine if analysis of cardiorespiratory monitoring data can predict unfavorable respiratory outcomes at 40 weeks postmenstrual age (PMA) and other outcomes, such as bronchopulmonary dysplasia at 36 weeks PMA. Methods: The Prematurity-related Ventilatory Control (Pre-Vent) study was an observational multicenter prospective cohort study including infants born at <29 weeks of gestation with continuous cardiorespiratory monitoring. The primary outcome was either "favorable" (alive and previously discharged or inpatient and off respiratory medications/O2/support at 40 wk PMA) or "unfavorable" (either deceased or inpatient/previously discharged on respiratory medications/O2/support at 40 wk PMA). Measurements and Main Results: A total of 717 infants were evaluated (median birth weight, 850 g; gestation, 26.4 wk), 53.7% of whom had a favorable outcome and 46.3% of whom had an unfavorable outcome. Physiologic data predicted unfavorable outcome, with accuracy improving with advancing age (area under the curve, 0.79 at Day 7, 0.85 at Day 28 and 32 wk PMA). The physiologic variable that contributed most to prediction was intermittent hypoxemia with oxygen saturation as measured by pulse oximetry <90%. Models with clinical data alone or combining physiologic and clinical data also had good accuracy, with areas under the curve of 0.84-0.85 at Days 7 and 14 and 0.86-0.88 at Day 28 and 32 weeks PMA. Intermittent hypoxemia with oxygen saturation as measured by pulse oximetry <80% was the major physiologic predictor of severe bronchopulmonary dysplasia and death or mechanical ventilation at 40 weeks PMA. Conclusions: Physiologic data are independently associated with unfavorable respiratory outcome in extremely preterm infants.
Collapse
Affiliation(s)
| | - Debra E. Weese-Mayer
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Stanley Manne Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Anna Maria Hibbs
- University Hospitals Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, Ohio
| | | | - John L. Carroll
- University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | | | | | - Aaron Hamvas
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Stanley Manne Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Richard J. Martin
- University Hospitals Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, Ohio
| | - Juliann M. Di Fiore
- University Hospitals Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, Ohio
| | | | - James S. Kemp
- Washington University School of Medicine in St. Louis, St. Louis, Missouri
| | | | | | - Jiaxing Qiu
- University of Virginia, Charlottesville, Virginia
| | | | | | | | | |
Collapse
|
31
|
Yazdanyar A, Cai CL, Aranda JV, Shrier E, Beharry KD. Comparison of Bevacizumab and Aflibercept for Suppression of Angiogenesis in Human Retinal Microvascular Endothelial Cells. Pharmaceuticals (Basel) 2023; 16:939. [PMID: 37513851 PMCID: PMC10383229 DOI: 10.3390/ph16070939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/19/2023] [Indexed: 07/30/2023] Open
Abstract
Bevacizumab (Avastin) is a vascular endothelial growth factor (VEGF) inhibitor that is widely used for aggressive posterior retinopathy of prematurity (APROP). Its use is associated with multiple adverse effects. Aflibercept (Eylea) is a VEGFR-1 analogue that is approved for ocular use, but its efficacy for APROP is less studied. We tested the hypothesis that Eylea is as effective as Avastin for suppression of intermittent hypoxia (IH)-induced angiogenesis. Human retinal microvascular endothelial cells (HRECs) were treated with Avastin and low- or high-dose Eylea and exposed to normoxia, hyperoxia (50% O2), or neonatal IH for 24, 48, or 72 h. Cells were assessed for migration and tube formation capacities, as well as biomarkers of angiogenesis and oxidative stress. Both doses of Eylea suppressed migration and tube formation in all oxygen environments, although the effect was not as robust as Avastin. Furthermore, the lower dose of Eylea appeared to be more effective than the higher dose. Eylea induced soluble VEGFR-1 (sVEGFR-1) coincident with high IGF-I levels and decreased Notch/Jagged-1, demonstrating a functional association. Given the role of VEGFR-1 and Notch as guidance cues for vascular sprouting, these data suggest that Eylea may promote normal vascular patterning in a dose-dependent manner.
Collapse
Affiliation(s)
- Amirfarbod Yazdanyar
- Department of Ophthalmology, State University of New York, Downstate Health Sciences University, Brooklyn, NY 11203, USA
- Retina Group of New England, Waterford, CT 06385, USA
| | - Charles L Cai
- Department of Ophthalmology, State University of New York, Downstate Health Sciences University, Brooklyn, NY 11203, USA
| | - Jacob V Aranda
- Department of Ophthalmology, State University of New York, Downstate Health Sciences University, Brooklyn, NY 11203, USA
- Department of Pediatrics/Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Health Sciences University, Brooklyn, NY 11203, USA
| | - Eric Shrier
- Department of Pediatrics/Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Health Sciences University, Brooklyn, NY 11203, USA
| | - Kay D Beharry
- Department of Ophthalmology, State University of New York, Downstate Health Sciences University, Brooklyn, NY 11203, USA
- Department of Pediatrics/Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Health Sciences University, Brooklyn, NY 11203, USA
| |
Collapse
|
32
|
Herrick HM, O'Reilly M, Lee S, Wildenhain P, Napolitano N, Shults J, Nishisaki A, Foglia EE. Providing Oxygen during Intubation in the NICU Trial (POINT): study protocol for a randomised controlled trial in the neonatal intensive care unit in the USA. BMJ Open 2023; 13:e073400. [PMID: 37055198 PMCID: PMC10106049 DOI: 10.1136/bmjopen-2023-073400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 03/28/2023] [Indexed: 04/15/2023] Open
Abstract
INTRODUCTION Nearly half of neonatal intubations are complicated by severe desaturation (≥20% decline in pulse oximetry saturation (SpO2)). Apnoeic oxygenation prevents or delays desaturation during intubation in adults and older children. Emerging data show mixed results for apnoeic oxygenation using high-flow nasal cannula (NC) during neonatal intubation. The study objective is to determine among infants ≥28 weeks' corrected gestational age (cGA) who undergo intubation in the neonatal intensive care unit (NICU) whether apnoeic oxygenation with a regular low-flow NC, compared with standard of care (no additional respiratory support), reduces the magnitude of SpO2 decline during intubation. METHODS AND ANALYSIS This is a multicentre, prospective, unblinded, pilot randomised controlled trial in infants ≥28 weeks' cGA who undergo premedicated (including paralytic) intubation in the NICU. The trial will recruit 120 infants, 10 in the run-in phase and 110 in the randomisation phase, at two tertiary care hospitals. Parental consent will be obtained for eligible patients prior to intubation. Patients will be randomised to 6 L NC 100% oxygen versus standard of care (no respiratory support) at time of intubation. The primary outcome is magnitude of oxygen desaturation during intubation. Secondary outcomes include additional efficacy, safety and feasibility outcomes. Ascertainment of the primary outcome is performed blinded to intervention arm. Intention-to-treat analyses will be conducted to compare outcomes between treatment arms. Two planned subgroup analyses will explore the influence of first provider intubation competence and patients' baseline lung disease using pre-intubation respiratory support as a proxy. ETHICS AND DISSEMINATION The Institutional Review Boards at the Children's Hospital of Philadelphia and the University of Pennsylvania have approved the study. Upon completion of the trial, we intend to submit our primary results to a peer review forum after which we plan to publish our results in a peer-reviewed paediatric journal. TRIAL REGISTRATION NUMBER ClinicalTrials.gov Registry (NCT05451953).
Collapse
Affiliation(s)
- Heidi M Herrick
- Pediatrics, Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Mackenzie O'Reilly
- Pediatrics, Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Sura Lee
- Pediatrics, Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Paul Wildenhain
- Pediatrics, Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Natalie Napolitano
- Respiratory Therapy, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Justine Shults
- Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Biostatistics, Epidemiology, and Informatics, Division of Biostatistics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Akira Nishisaki
- Anesthesiology and Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Anesthesiology and Critical Care Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Elizabeth E Foglia
- Pediatrics, Division of Neonatology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| |
Collapse
|
33
|
Bruschettini M, Brattström P, Russo C, Onland W, Davis PG, Soll R. Caffeine dosing regimens in preterm infants with or at risk for apnea of prematurity. Cochrane Database Syst Rev 2023; 4:CD013873. [PMID: 37040532 PMCID: PMC10089673 DOI: 10.1002/14651858.cd013873.pub2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
BACKGROUND Very preterm infants often require respiratory support and are therefore exposed to an increased risk of bronchopulmonary dysplasia (chronic lung disease) and later neurodevelopmental disability. Caffeine is widely used to prevent and treat apnea (temporal cessation of breathing) associated with prematurity and facilitate extubation. Though widely recognized dosage regimes have been used for decades, higher doses have been suggested to further improve neonatal outcomes. However, observational studies suggest that higher doses may be associated with harm. OBJECTIVES To determine the effects of higher versus standard doses of caffeine on mortality and major neurodevelopmental disability in preterm infants with (or at risk of) apnea, or peri-extubation. SEARCH METHODS We searched CENTRAL, MEDLINE, Embase, CINAHL, the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP), and clinicaltrials.gov in May 2022. The reference lists of relevant articles were also checked to identify additional studies. SELECTION CRITERIA We included randomized (RCTs), quasi-RCTs and cluster-RCTs, comparing high-dose to standard-dose strategies in preterm infants. High-dose strategies were defined as a high-loading dose (more than 20 mg of caffeine citrate/kg) or a high-maintenance dose (more than 10 mg of caffeine citrate/kg/day). Standard-dose strategies were defined as a standard-loading dose (20 mg or less of caffeine citrate/kg) or a standard-maintenance dose (10 mg or less of caffeine citrate/kg/day). We specified three additional comparisons according to the indication for commencing caffeine: 1) prevention trials, i.e. preterm infants born at less than 34 weeks' gestation, who are at risk for apnea; 2) treatment trials, i.e. preterm infants born at less than 37 weeks' gestation, with signs of apnea; 3) extubation trials: preterm infants born at less than 34 weeks' gestation, prior to planned extubation. DATA COLLECTION AND ANALYSIS We used standard methodological procedures expected by Cochrane. We evaluated treatment effects using a fixed-effect model with risk ratio (RR) for categorical data and mean, standard deviation (SD), and mean difference (MD) for continuous data. MAIN RESULTS: We included seven trials enrolling 894 very preterm infants (reported in Comparison 1, i.e. any indication). Two studies included infants for apnea prevention (Comparison 2), four studies for apnea treatment (Comparison 3) and two for extubation management (Comparison 4); in one study, indication for caffeine administration was both apnea treatment and extubation management (reported in Comparison 1, Comparison 3 and Comparison 4). In the high-dose groups, loading and maintenance caffeine doses ranged from 30 mg/kg to 80 mg/kg, and 12 mg/kg to 30 mg/kg, respectively; in the standard-dose groups, loading and maintenance caffeine doses ranged from 6 mg/kg to 25 mg/kg, and 3 mg/kg to 10 mg/kg, respectively. Two studies had three study groups: infants were randomized in three different doses (two of them matched our definition of high dose and one matched our definition of standard dose); high-dose caffeine and standard-dose caffeine were compared to theophylline administration (the latter is included in a separate review). Six of the seven included studies compared high-loading and high-maintenance dose to standard-loading and standard-maintenance dose, whereas in one study standard-loading dose and high-maintenance dose was compared to standard-loading dose and standard-maintenance dose. High-dose caffeine strategies (administration for any indication) may have little or no effect on mortality prior to hospital discharge (risk ratio (RR) 0.86, 95% confidence of interval (CI) 0.53 to 1.38; risk difference (RD) -0.01, 95% CI -0.05 to 0.03; I² for RR and RD = 0%; 5 studies, 723 participants; low-certainty evidence). Only one study enrolling 74 infants reported major neurodevelopmental disability in children aged three to five years (RR 0.79, 95% CI 0.51 to 1.24; RD -0.15, 95% CI -0.42 to 0.13; 46 participants; very low-certainty evidence). No studies reported the outcome mortality or major neurodevelopmental disability in children aged 18 to 24 months and 3 to 5 years. Five studies reported bronchopulmonary dysplasia at 36 weeks' postmenstrual age (RR 0.75, 95% CI 0.60 to 0.94; RD -0.08, 95% CI -0.15 to -0.02; number needed to benefit (NNTB) = 13; I² for RR and RD = 0%; 723 participants; moderate-certainty evidence). High-dose caffeine strategies may have little or no effect on side effects (RR 1.66, 95% CI 0.86 to 3.23; RD 0.03, 95% CI -0.01 to 0.07; I² for RR and RD = 0%; 5 studies, 593 participants; low-certainty evidence). The evidence is very uncertain for duration of hospital stay (data reported in three studies could not be pooled in meta-analysis because outcomes were expressed as medians and interquartile ranges) and seizures (RR 1.42, 95% CI 0.79 to 2.53; RD 0.14, 95% CI -0.09 to 0.36; 1 study, 74 participants; very low-certainty evidence). We identified three ongoing trials conducted in China, Egypt, and New Zealand. AUTHORS' CONCLUSIONS High-dose caffeine strategies in preterm infants may have little or no effect on reducing mortality prior to hospital discharge or side effects. We are very uncertain whether high-dose caffeine strategies improves major neurodevelopmental disability, duration of hospital stay or seizures. No studies reported the outcome mortality or major neurodevelopmental disability in children aged 18 to 24 months and 3 to 5 years. High-dose caffeine strategies probably reduce the rate of bronchopulmonary dysplasia. Recently completed and future trials should report long-term neurodevelopmental outcome of children exposed to different caffeine dosing strategies in the neonatal period. Data from extremely preterm infants are needed, as this population is exposed to the highest risk for mortality and morbidity. However, caution is required when administering high doses in the first hours of life, when the risk for intracranial bleeding is highest. Observational studies might provide useful information regarding potential harms of the highest doses.
Collapse
Affiliation(s)
- Matteo Bruschettini
- Paediatrics, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
- Cochrane Sweden, Department of Research and Education, Lund University, Skåne University Hospital, Lund, Sweden
| | | | | | - Wes Onland
- Department of Neonatology, Amsterdam University Medical Centers, VU University Medical Center, Emma Children's Hospital, University of Amsterdam, Amsterdam, Netherlands
| | - Peter G Davis
- Newborn Research Centre and Neonatal Services, The Royal Women's Hospital, Melbourne, Australia
- Murdoch Children's Research Institute, Melbourne, Australia
- Department of Obstetrics and Gynecology, University of Melbourne, Melbourne, Australia
| | - Roger Soll
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Larner College of Medicine at the University of Vermont, Burlington, Vermont, USA
| |
Collapse
|
34
|
Caffeine versus other methylxanthines for the prevention and treatment of apnea in preterm infants. Cochrane Database Syst Rev 2023; 2023:CD015462. [PMCID: PMC10029805 DOI: 10.1002/14651858.cd015462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To assess the effects of caffeine compared to aminophylline or theophylline in preterm infants at risk of apnea, with apnea, or in the peri‐extubation phase.
Collapse
|
35
|
Alalaiyan S, Shakeeb D, Al Hazzani F, Binmanee A. Significance of Intermittent Hypoxic Episodes in Premature Infants Prior to Discharge. Cureus 2023; 15:e36113. [PMID: 37065300 PMCID: PMC10098437 DOI: 10.7759/cureus.36113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2023] [Indexed: 03/17/2023] Open
Abstract
Objective The aim of this study was to determine the rate and severity of intermittent hypoxic episodes in premature infants who underwent overnight pulse oximetry prior to discharge. Methods Preterm infants with a birth weight of 1500 grams or less and who underwent overnight pulse oximetry prior to discharge were included. Maternal and neonatal demographic data and complications of prematurity were recorded. All infants underwent overnight pulse oximetry prior to discharge and the McGill score was used to categorize the degree of desaturations (categories 1-4; normal, mildly, moderately, and severely abnormal). Results Fifty infants underwent the overnight pulse oximetry The McGill score showed that 2% had no hypoxia, 50% had mild hypoxia, 20% had moderate hypoxia, and 28% had severe hypoxia. The frequency of desaturations (62.5%) was found more in infants with a birth weight of 1000 grams or less. The results showed that the O2 requirement at discharge was significant (p = 0.0341), and increased values of O2 at discharge were associated with more severe hypoxia. As a result of these findings, 40% of infants were discharged home on oxygen and 26% were discharged on caffeine. Fifty-two percent of infants were initially diagnosed to have stages 1 & 2 retinopathy of prematurity (ROP), 14% had stage 3, and 2% had stage 4 ROP. Eight percent of infants required surgical intervention for ROP. Conclusions Clinically inapparent significant episodes of intermittent hypoxia (IH) are frequent in preterm infants in the early postnatal age, and they may persist post-discharge. Knowledge of the association between IH and morbidity among all neonatal intensive care unit (NICU) caregivers would be of great benefit. Indications for screening preterm infants at risk of severe IH should be reconsidered.
Collapse
|
36
|
Care Bundle to Improve Oxygen Maintenance and Events. Pediatr Qual Saf 2023; 8:e639. [PMID: 36926217 PMCID: PMC10013622 DOI: 10.1097/pq9.0000000000000639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/14/2023] [Indexed: 03/15/2023] Open
Abstract
Prolonged periods spent outside the target range of oxygen saturation (SpO2) in preterm infants, along with frequent desaturation events, predispose them to retinopathy of prematurity (ROP) and long-term neurodevelopmental impairment. The primary aim of this study was to increase the mean time spent within the target SpO2 range (WTR) by 10% and to reduce the frequency of desaturation events by 5 events per patient day, respectively, within 18 months of implementing a care bundle. Methods This study was completed in a 46-bed neonatal intensive care unit (NICU), involving 246 staff members and led by a quality improvement team. The change interventions included implementing new practice guidelines, reviewing daily summaries of SpO2 maintenance, daily infant wellness assessment, standardizing workflow, and responding to SpO2 alarms. In addition, we collected staff satisfaction and compliance with change interventions, resource use, and morbidity and mortality data at discharge. Results The mean time spent WTR increased from 65.3% to 75.3%, and the frequency of desaturation events decreased from 25.1 to 16.5 events per patient day, respectively, with a higher magnitude of benefit in infants on days with supplemental oxygen. Postimplementation, the duration of high-frequency ventilation and supplemental oxygen were lower, but morbidity and mortality rates were similar. Staff satisfaction with training workshops, coaching, use of the infant wellness assessment tool, and SpO2 alarm management algorithms were 74%, 82%, 80%, and 74%, respectively. Conclusion Implementing a care bundle to improve oxygen maintenance and reduce desaturation events increased the time spent WTR and reduced the frequency of desaturation events.
Collapse
|
37
|
Borenstein-Levin L, Poppe JA, van Weteringen W, Taal HR, Hochwald O, Kugelman A, Reiss IKM, Simons SHP. Oxygen saturation histogram classification system to evaluate response to doxapram treatment in preterm infants. Pediatr Res 2023; 93:932-937. [PMID: 35739260 DOI: 10.1038/s41390-022-02158-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 04/25/2022] [Accepted: 05/22/2022] [Indexed: 11/08/2022]
Abstract
BACKGROUND An oxygen saturation (SpO2) histogram classification system has been shown to enable quantification of SpO2 instability into five types, based on histogram distribution and time spent at SpO2 ≤ 80%. We aimed to investigate this classification system as a tool to describe response to doxapram treatment in infants with severe apnea of prematurity. METHODS This retrospective study included 61 very-low-birth-weight infants who received doxapram. SpO2 histograms were generated over the 24-h before and after doxapram start. Therapy response was defined as a decrease of ≥1 histogram types after therapy start. RESULTS The median (IQR) histogram type decreased from 4 (3-4) before to 3 (2-3) after therapy start (p < 0.001). The median (IQR) FiO2 remained constant before (27% [24-35%]) and after (26% [22-35%]) therapy. Thirty-six infants (59%) responded to therapy within 24 h. In 34/36 (94%) of the responders, invasive mechanical ventilation (IMV) was not required during the first 72 h of therapy, compared to 15/25 (60%) of non-responders (p = 0.002). Positive and negative predictive values of the 24-h response for no IMV requirement within 72 h were 0.46 and 0.94, respectively. CONCLUSIONS Classification of SpO2 histograms provides an objective bedside measure to assess response to doxapram therapy and can serve as a tool to detect changes in oxygenation status around respiratory interventions. IMPACT The SpO2 histogram classification system provides a tool for quantifying response to doxapram therapy. The classification system allowed estimation of the probability of invasive mechanical ventilation requirement, already within a few hours of treatment. The SpO2 histogram classification system allows an objective bedside assessment of the oxygenation status of the preterm infant, making it possible to assess the changes in oxygenation status in response to respiratory interventions.
Collapse
Affiliation(s)
- Liron Borenstein-Levin
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Campus, Haifa, Israel.
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
| | - Jarinda A Poppe
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Willem van Weteringen
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - H Rob Taal
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ori Hochwald
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Amir Kugelman
- Neonatal Intensive Care Unit, Ruth Rappaport Children's Hospital, Rambam Health Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Irwin K M Reiss
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Sinno H P Simons
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| |
Collapse
|
38
|
Antenatal and Postnatal Sequelae of Oxidative Stress in Preterm Infants: A Narrative Review Targeting Pathophysiological Mechanisms. Antioxidants (Basel) 2023; 12:antiox12020422. [PMID: 36829980 PMCID: PMC9952227 DOI: 10.3390/antiox12020422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/01/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
The detrimental effects of oxidative stress (OS) can start as early as after conception. A growing body of evidence has shown the pivotal role of OS in the development of several pathological conditions during the neonatal period, which have been therefore defined as OS-related neonatal diseases. Due to the physiological immaturity of their antioxidant defenses and to the enhanced antenatal and postnatal exposure to free radicals, preterm infants are particularly susceptible to oxidative damage, and several pathophysiological cascades involved in the development of prematurity-related complications are tightly related to OS. This narrative review aims to provide a detailed overview of the OS-related pathophysiological mechanisms that contribute to the main OS-related diseases during pregnancy and in the early postnatal period in the preterm population. Particularly, focus has been placed on pregnancy disorders typically associated with iatrogenic or spontaneous preterm birth, such as intrauterine growth restriction, pre-eclampsia, gestational diabetes, chorioamnionitis, and on specific postnatal complications for which the role of OS has been largely ascertained (e.g., respiratory distress, bronchopulmonary dysplasia, retinopathy of prematurity, periventricular leukomalacia, necrotizing enterocolitis, neonatal sepsis). Knowledge of the underlying pathophysiological mechanisms may increase awareness on potential strategies aimed at preventing the development of these conditions or at reducing the ensuing clinical burden.
Collapse
|
39
|
Stoecklin B, Choi YJ, Dassios T, Jones JG, Lockwood GG, Pillow JJ. Unstable SpO 2 in preterm infants: The key role of reduced ventilation to perfusion ratio. Front Physiol 2023; 14:1112115. [PMID: 36824465 PMCID: PMC9941664 DOI: 10.3389/fphys.2023.1112115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/25/2023] [Indexed: 02/10/2023] Open
Abstract
Introduction: Instability of peripheral oxyhemoglobin saturation (SpO2) in preterm infants is correlated with late disability and is poorly understood. We hypothesised that a reduced ventilation to perfusion ratio (VA/Q) is the key predisposing factor for SpO2 instability. Methods: We first used a mathematical model to compare the effects of reduced VA/Q or shunt on SaO2 stability (SaO2 and SpO2 are used for model and clinical studies respectively). Stability was inferred from the slope of the SaO2 vs. inspired oxygen pressure (P IO2) curve as it intersects the 21 kPa P IO2 line (breathing air). Then, in a tertiary neonatal intensive care unit, paired hourly readings of SpO2 and P IO2 were recorded over a 24 h period in week old extremely preterm infants. We noted SpO2 variability and used an algorithm to derive VA/Q and shunt from the paired SpO2 and P IO2 measurements. Results: Our model predicted that when VA/Q < 0.4, a 1% change in P IO2 results in >8% fluctuation in SaO2 at 21 kPa P IO2. In contrast, when a 20% intrapulmonary shunt was included in the model, a 1% change in P IO2 results in <1% fluctuation in the SaO2. Moreover, further reducing the VA/Q from 0.4 to 0.3 at 21 kPa P IO2 resulted in a 24% fall in SaO2. All 31 preterm infants [mean gestation (±standard deviation) 26.2 (±1) week] had VA/Q < 0.74 (normal >0.85) but only two infants had increased shunt at 1.1 (±0.5) weeks' postnatal age. Median (IQR) SpO2 fluctuation was 8 (7)%. The greatest SpO2 fluctuations were seen in infants with VA/Q < 0.52 (n = 10): SpO2 fluctuations ranged from 11%-17% at a constant P IO2 when VA/Q < 0.52. Two infants had reduced VA/Q and increased shunt (21% and 27%) which resolved into low VA/Q after 3-6 h. Discussion: Routine monitoring of P IO2 and SpO2 can be used to derive a hitherto elusive measure of VA/Q. Predisposition to SpO2 instability results from reduced VA/Q rather than increased intrapulmonary shunt in preterm infants with cardiorespiratory disease. SpO2 instability can be prevented by a small increase in P IO2.
Collapse
Affiliation(s)
- Benjamin Stoecklin
- Department of Neonatology, University Children’s Hospital Basel (UKBB), Basel, Switzerland,School of Human Sciences, The University of Western Australia, Crawley, WA, Australia,*Correspondence: Benjamin Stoecklin,
| | - Y. Jane Choi
- School of Human Sciences, The University of Western Australia, Crawley, WA, Australia,Wal-Yan Respiratory Research Centre, Telethon Kids Institute, Nedlands, WA, Australia
| | - Theodore Dassios
- Neonatal Intensive Care Unit, King’s College Hospital NHS Foundation Trust Denmark Hill, London, United Kingdom
| | - J. Gareth Jones
- Cambridge University Clinical School, Cambridge, United Kingdom
| | | | - J. Jane Pillow
- School of Human Sciences, The University of Western Australia, Crawley, WA, Australia,Wal-Yan Respiratory Research Centre, Telethon Kids Institute, Nedlands, WA, Australia
| |
Collapse
|
40
|
Salverda HH, Oldenburger NNJ, Rijken M, Tan RRNGB, Pas ABT, van Klink JMM. Automated oxygen control for very preterm infants and neurodevelopmental outcome at 2 years-a retrospective cohort study. Eur J Pediatr 2023; 182:1593-1599. [PMID: 36693993 PMCID: PMC10167103 DOI: 10.1007/s00431-023-04809-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 01/26/2023]
Abstract
UNLABELLED Faster resolution of hypoxaemic or hyperoxaemic events in preterm infants may reduce long-term neurodevelopmental impairment. Automatic titration of inspiratory oxygen increases time within the oxygen saturation target range and may provide a more prompt response to hypoxic and hyperoxic events. We assessed routinely performed follow-up at 2 years of age after the implementation of automated oxygen control (AOC) as standard care and compared this with a historical cohort. Neurodevelopmental outcomes at 2 years of age were compared for infants born at 24-29 weeks gestational age before (2012-2015) and after (2015-2018) the implementation of AOC as standard of care. The primary outcome was a composite outcome of either mortality or severe neurodevelopmental impairment (NDI), and other outcomes assessed were mild-moderate NDI, Bayley-III composite scores, cerebral palsy GMFCS, and CBCL problem behaviour scores. A total of 289 infants were included in the pre-AOC epoch and 292 in the post-AOC epoch. Baseline characteristics were not significantly different. Fifty-one infants were lost to follow-up (pre-AOC 6.9% (20/289), post-implementation 10.6% (31/292). The composite outcome of mortality or severe NDI was observed in 17.9% pre-AOC (41/229) vs. 24.0% (47/196) post-AOC (p = 0.12). No significant differences were found for the secondary outcomes such as mild-moderate NDI, Bayley-III composite scores, cerebral palsy GMFCS, and problem behaviour scores, with the exception of parent-reported readmissions until the moment of follow-up which was less frequent post-AOC than pre-AOC. CONCLUSION In this cohort study, the implementation of automated oxygen control in our NICU as standard of care for preterm infants led to no statistically significant difference in neurodevelopmental outcome at 2 years of age. WHAT IS KNOWN • Neurodevelopmental outcome is linked to hypoxemia, hyperoxaemia and choice of SpO2 target range. • Automated titration of inspired oxygen may provide a faster resolution of hypoxaemic and hyperoxaemic events. WHAT IS NEW • This cohort study did not find a significant difference in neurodevelopmental outcome at two years of age after implementing automated oxygen control as standard of care.
Collapse
Affiliation(s)
- Hylke H Salverda
- Department of Paediatrics, Division of Neonatology, Willem-Alexander Children's Hospital, Leiden University Medical Center, PO Box 9600, Leiden, the Netherlands.
| | - N Nathalie J Oldenburger
- Department of Paediatrics, Division of Neonatology, Willem-Alexander Children's Hospital, Leiden University Medical Center, PO Box 9600, Leiden, the Netherlands
| | - Monique Rijken
- Department of Paediatrics, Division of Neonatology, Willem-Alexander Children's Hospital, Leiden University Medical Center, PO Box 9600, Leiden, the Netherlands
| | - R Ratna N G B Tan
- Department of Paediatrics, Division of Neonatology, Willem-Alexander Children's Hospital, Leiden University Medical Center, PO Box 9600, Leiden, the Netherlands
| | - Arjan B Te Pas
- Department of Paediatrics, Division of Neonatology, Willem-Alexander Children's Hospital, Leiden University Medical Center, PO Box 9600, Leiden, the Netherlands
| | - Jeanine M M van Klink
- Department of Paediatrics, Division of Psychology, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, the Netherlands
| |
Collapse
|
41
|
Salverda HH, Dekker J, Lopriore E, Dargaville PA, Pauws SC, Te Pas AB. Comparison of two automated oxygen controllers in oxygen targeting in preterm infants during admission: an observational study. Arch Dis Child Fetal Neonatal Ed 2023:archdischild-2022-324819. [PMID: 36599676 DOI: 10.1136/archdischild-2022-324819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 12/20/2022] [Indexed: 01/06/2023]
Abstract
OBJECTIVE To compare the effect of two different automated oxygen control devices on time preterm infants spent in different oxygen saturation (SpO2) ranges during their entire stay in the neonatal intensive care unit (NICU). DESIGN Retrospective cohort study of prospectively collected data. SETTING Tertiary level neonatal unit in the Netherlands. PATIENTS Preterm infants (OxyGenie 75 infants, CLiO2 111 infants) born at 24-29 weeks' gestation receiving at least 72 hours of respiratory support between October 2015 and November 2020. INTERVENTIONS Inspired oxygen concentration was titrated by the OxyGenie controller (SLE6000 ventilator) between February 2019 and November 2020 and the CLiO2 controller (AVEA ventilator) between October 2015 and December 2018 as standard of care. MAIN OUTCOME MEASURES Time spent within SpO2 target range (TR, 91-95% for either epoch) and other SpO2 ranges. RESULTS Time spent within the SpO2 TR when receiving supplemental oxygen was higher during OxyGenie control (median 71.5 [IQR 64.6-77.0]% vs 51.3 [47.3-58.5]%, p<0.001). Infants under OxyGenie control spent less time in hypoxic and hyperoxic ranges (SpO2<80%: 0.7 [0.4-1.4]% vs 1.2 [0.7-2.3]%, p<0.001; SpO2>98%: 1.0 [0.5-2.4]% vs 4.0 [2.0-7.9]%, p<0.001). Both groups received a similar FiO2 (29.5 [28.0-33.2]% vs 29.6 [27.7-32.1]%, p=not significant). CONCLUSIONS Oxygen saturation targeting was significantly different in the OxyGenie epoch in preterm infants, with less time in hypoxic and hyperoxic SpO2 ranges during their stay in the NICU.
Collapse
Affiliation(s)
- Hylke H Salverda
- Willem-Alexander Children's Hospital, Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, The Netherlands, Leiden University Medical Center, Leiden, The Netherlands .,Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Janneke Dekker
- Willem-Alexander Children's Hospital, Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, The Netherlands, Leiden University Medical Center, Leiden, The Netherlands
| | - Enrico Lopriore
- Willem-Alexander Children's Hospital, Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, The Netherlands, Leiden University Medical Center, Leiden, The Netherlands
| | - Peter A Dargaville
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia.,Department of Pediatrics, Royal Hobart Hospital, Hobart, Tasmania, Australia
| | - Steffen C Pauws
- Willem-Alexander Children's Hospital, Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, The Netherlands, Leiden University Medical Center, Leiden, The Netherlands.,Tilburg Center for Cognition and Communication, Tilburg University, Tilburg, The Netherlands
| | - Arjan B Te Pas
- Willem-Alexander Children's Hospital, Department of Pediatrics, Division of Neonatology, Leiden University Medical Center, The Netherlands, Leiden University Medical Center, Leiden, The Netherlands
| |
Collapse
|
42
|
Retinopathy of prematurity in preterm infants: A prospective study of prevalence and predictors in Northern India. CLINICAL EPIDEMIOLOGY AND GLOBAL HEALTH 2023. [DOI: 10.1016/j.cegh.2023.101230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
|
43
|
Ramanand P, Indic P, Travers CP, Ambalavanan N. Comparison of oxygen supplementation in very preterm infants: Variations of oxygen saturation features and their application to hypoxemic episode based risk stratification. Front Pediatr 2023; 11:1016197. [PMID: 36923272 PMCID: PMC10009221 DOI: 10.3389/fped.2023.1016197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 01/20/2023] [Indexed: 03/02/2023] Open
Abstract
Background Oxygen supplementation is commonly used to maintain oxygen saturation (SpO2) levels in preterm infants within target ranges to reduce intermittent hypoxemic (IH) events, which are associated with short- and long-term morbidities. There is not much information available about differences in oxygenation patterns in infants undergoing such supplementations nor their relation to observed IH events. This study aimed to describe oxygenation characteristics during two types of supplementation by studying SpO2 signal features and assess their performance in hypoxemia risk screening during NICU monitoring. Subjects and methods SpO2 data from 25 infants with gestational age <32 weeks and birthweight <2,000 g who underwent a cross over trial of low-flow nasal cannula (NC) and digitally-set servo-controlled oxygen environment (OE) supplementations was considered in this secondary analysis. Features pertaining to signal distribution, variability and complexity were estimated and analyzed for differences between the supplementations. Univariate and regularized multivariate logistic regression was applied to identify relevant features and develop screening models for infants likely to experience a critically high number of IH per day of observation. Their performance was assessed using area under receiver operating curves (AUROC), accuracy, sensitivity, specificity and F1 scores. Results While most SpO2 measures remained comparable during both supplementations, signal irregularity and complexity were elevated while on OE, pointing to more volatility in oxygen saturation during this supplementation mode. In addition, SpO2 variability measures exhibited early prognostic value in discriminating infants at higher risk of critically many IH events. Poincare plot variability at lag 1 had AUROC of 0.82, 0.86, 0.89 compared to 0.63, 0.75, 0.81 for the IH number, a clinical parameter at observation times of 30 min, 1 and 2 h, respectively. Multivariate models with two features exhibited validation AUROC > 0.80, F1 score > 0.60 and specificity >0.85 at observation times ≥ 1 h. Finally, we proposed a framework for risk stratification of infants using a cumulative risk score for continuous monitoring. Conclusion Analysis of oxygen saturation signal routinely collected in the NICU, may have extensive applications in inferring subtle changes to cardiorespiratory dynamics under various conditions as well as in informing clinical decisions about infant care.
Collapse
Affiliation(s)
- Pravitha Ramanand
- Department of Electrical Engineering, University of Texas at Tyler, Tyler, TX, United States
| | - Premananda Indic
- Department of Electrical Engineering, University of Texas at Tyler, Tyler, TX, United States
| | - Colm P Travers
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Namasivayam Ambalavanan
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, United States
| |
Collapse
|
44
|
Salverda HH, Beelen DML, Cramer SJE, Pauws SC, Schalij-Delfos N, Te Pas AB. Clinical outcomes of preterm infants while using automated controllers during standard care: comparison of cohorts with different automated titration strategies. Arch Dis Child Fetal Neonatal Ed 2023; 108:26-30. [PMID: 35577567 DOI: 10.1136/archdischild-2021-323690] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 04/30/2022] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To compare short-term clinical outcome after using two different automated oxygen controllers (OxyGenie and CLiO2). DESIGN Propensity score-matched retrospective observational study. SETTING Tertiary-level neonatal unit in the Netherlands. PATIENTS Preterm infants (OxyGenie n=121, CLiO2 n=121) born between 24+0-29+6 weeks of gestation. Median (IQR) gestational age in the OxyGenie cohort was 28+3 (26+3.5-29+0) vs 27+5 (26+5-28+3) in the CLiO2 cohort, respectively 42% and 46% of infants were male and mean (SD) birth weight was 1034 (266) g vs 1022 (242) g. INTERVENTIONS Inspired oxygen was titrated by OxyGenie (SLE6000) or CLiO2 (AVEA) during respiratory support. MAIN OUTCOME MEASURES Mortality, retinopathy of prematurity (ROP), bronchopulmonary dysplasia and necrotising enterocolitis. RESULTS Fewer infants in the OxyGenie group received laser coagulation for ROP (1 infant vs 10; risk ratio 0.1 (95% CI 0.0 to 0.7); p=0.008), and infants stayed shorter in the neonatal intensive care unit (NICU) (28 (95% CI 15 to 42) vs 40 (95% CI 25 to 61) days; median difference 13.5 days (95% CI 8.5 to 19.5); p<0.001). Infants in the OxyGenie group had fewer days on continuous positive airway pressure (8.4 (95% CI 4.8 to 19.8) days vs 16.7 (95% CI 6.3 to 31.1); p<0.001) and a significantly shorter days on invasive ventilation (0 (95% CI 0 to 4.2) days vs 2.1 (95% CI 0 to 8.4); p=0.012). There were no statistically significant differences in all other morbidities. CONCLUSIONS In this propensity score-matched retrospective study, the OxyGenie epoch was associated with less morbidity when compared with the CLiO2 epoch. There were significantly fewer infants that received treatment for ROP, received less intensive respiratory support and, although there were more supplemental oxygen days, the duration of stay in the NICU was shorter. A larger study will have to replicate these findings.
Collapse
Affiliation(s)
- Hylke H Salverda
- Department of Paediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Dianthe M L Beelen
- Department of Paediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Sophie J E Cramer
- Neonatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Steffen C Pauws
- Department of Paediatrics, Leiden University Medical Center, Leiden, The Netherlands.,Tilburg center for Cognition and Communication, Tilburg University, Tilburg, The Netherlands
| | | | - Arjan B Te Pas
- Neonatology, Leiden University Medical Center, Leiden, The Netherlands
| |
Collapse
|
45
|
Pulse oximetry reliability for detection of hypoxemia under motion in extremely premature infants. Pediatr Res 2023; 93:118-124. [PMID: 35978093 PMCID: PMC9892170 DOI: 10.1038/s41390-022-02258-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 07/25/2022] [Accepted: 07/29/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Episodes of intermittent hypoxemia (IH) in extremely premature infants are detected by pulse oximetry (SpO2) but motion artifact can cause falsely low readings. OBJECTIVES To evaluate the reliability of SpO2 during IH episodes associated with motion in premature infants of ≤28 weeks GA monitored with 2 pulse oximeters. METHODS IH episodes (defined as SpO2 < 90%, >10 s and SpO2 < 80%, >10 s) were classified by an analytic tool based on distortion caused by motion in the pulse plethysmograph (Pleth) as: A (true hypoxemia), both SpO2 decreased (only one Pleth showed motion); B (false hypoxemia), one SpO2 decreased (Pleth showed motion) and the other didn't (Pleth didn't show motion); C (suspected hypoxemia), both SpO2 decreased (both Pleth showed motion); D (true hypoxemia-motion free), both SpO2 decreased (neither Pleth showed motion). RESULTS In 24-72 h data from 20 infants of 25.4 ± 1.5 weeks GA, 14.1 ± 5.7 episodes with SpO2 < 90% and 7.9 ± 5.5 episodes with SpO2 < 80% per infant were identified. 29 ± 15% of episodes with SpO2 < 90% were type A, 1 ± 2% B, 43 ± 21% C and 27 ± 23% D, while 26 ± 22% of episodes with SpO2 < 80% were type A, 0.3 ± 1.2% B, 45 ± 29% C, and 19 ± 25% D [p < 0.001 type B vs. rest (GLM-repeated measures)]. CONCLUSION In extremely premature infants SpO2 with motion artifact is more likely to indicate true- than false hypoxemia. IMPACT Uncertainty on the effect of motion on SpO2 accuracy during hypoxemia episodes in premature infants can influence the caregiver's trust on SpO2 and influence their response. This study evaluated data from two pulse oximeters used simultaneously in different extremities to determine the reliability of SpO2 during motion artifact in premature infants. Data from this study showed that in extremely premature infants SpO2 is more likely to indicate true- than false hypoxemia during episodes of hypoxemia associated with motion artifact.
Collapse
|
46
|
Ambreen G, Kumar M, Ali A, Shah SAA, Saleem SM, Tahir A, Salat MS, Aslam MS, Hussain K. Evaluation of pharmaceutically compounded oral caffeine on the impact of medication adherence and risk of readmission among preterm neonates: A single-center quasi-experimental study. PLoS One 2022; 17:e0275655. [PMID: 36350877 PMCID: PMC9645656 DOI: 10.1371/journal.pone.0275655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 09/21/2022] [Indexed: 11/10/2022] Open
Abstract
Background Caffeine is available in an ampoule, used via parenteral and enteral routes in preterm neonates to treat apnea of prematurity (AOP) in neonates of gestational age ≥ 35–40 weeks. A longer duration of therapy has a higher risk of medication non-adherence due to higher costs and inappropriate dosage forms. Pharmaceutically compounded oral caffeine (PCC) could be an appropriate alternate dosage form. The researchers aimed to determine the impact of PCC on medication-related factors influencing medication adherence (MA) and the frequency of hospital readmission with apnea (HRA) in preterm neonates. Methods We conducted a single-center quasi-experimental study for this quality improvement project using PCC among the preterm neonates admitted in a tertiary care level-III NICU at the Aga Khan University Hospital Karachi, Pakistan, received caffeine therapy, and survived at discharge. The researchers compared pre-PCC data (April-December 2017) with post-PCC data (April-Dec 2018) each for nine months, with three months intervals (January-March 2018) of PCC formulation and implementation phase. The study was conducted according to the SQUIRE2.0 guidelines. The Data were collated on factors influencing MA, including the cost of therapy, medication refill rates, and parental complaints as primary outcome measures. The Risk factors of HRA were included as secondary outcomes. Results After PCC implementation cost of therapy was reduced significantly from Rs. 97000.0 (729.0 USD) to Rs. 24500.0 (185.0 USD) (p<0.001), significantly higher (p<0.001) number of patients completed remaining refills (77.6% pre-phase vs 97.5% post-phase). The number of parental complaints about cost, ampoule usage, medication drawing issue, wastage, inappropriate dosage form, and longer duration of therapy reduced significantly in post-phase. HRA reduced from 25% to 6.6% (p<0.001). Post-implementation of PCC (RR 0.14; 95% CI: 0.07–0.27) was a significant independent risk factor for reducing HRA using a multivariate analysis model. Longer duration of caffeine therapy after discharge (RR 1.05; 95% CI: 1.04–1.04), those who were born in multiple births (RR 1.15; 95% CI: 1.15–1.15), and those who had higher number of siblings were other significant independent risk factors for HRA. Conclusions PCC dispensation in the appropriate dosage form at discharge effectively reduced cost, non-adherence to therapy, and risk of hospital readmissions. This neonatal clinical and compounding pharmacist-led model can be replicated in other resource-limiting setting.
Collapse
Affiliation(s)
- Gul Ambreen
- Department of Pharmacy, Aga Khan University Hospital, Karachi, Pakistan
- * E-mail: (GA); (MSA)
| | - Manoj Kumar
- Department of Paediatrics & Child Health, Aga Khan University, Karachi, Pakistan
| | - Amin Ali
- Department of Neonatology & Paediatrics, Dow University of Health Sciences, Karachi, Pakistan
| | - Syed Akbar Ali Shah
- Department of Neonatology, Dr. Ruth K. M. Pfau, Civil Hospital Karachi, Karachi, Pakistan
| | - Syed Muzafar Saleem
- Department of Paediatrics & Child Health, Aga Khan University, Karachi, Pakistan
| | - Ayesha Tahir
- Department of Paediatrics & Child Health, Aga Khan University, Karachi, Pakistan
| | | | - Muhammad Shahzad Aslam
- School of Traditional Chinese Medicine, Xiamen University Malaysia, Sepang, Malaysia
- * E-mail: (GA); (MSA)
| | - Kashif Hussain
- Department of Pharmacy, Aga Khan University Hospital, Karachi, Pakistan
| |
Collapse
|
47
|
Hoyek S, Peacker BL, Acaba-Berrocal LA, Al-Khersan H, Zhao Y, Hartnett ME, Berrocal AM, Patel NA. The Male to Female Ratio in Treatment-Warranted Retinopathy of Prematurity: A Systematic Review and Meta-analysis. JAMA Ophthalmol 2022; 140:1110-1120. [PMID: 36201195 PMCID: PMC9539737 DOI: 10.1001/jamaophthalmol.2022.3988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/11/2022] [Indexed: 12/15/2022]
Abstract
Importance Literature and anecdotal evidence suggest a relationship between male sex and retinopathy of prematurity (ROP). It is not known whether a difference, if present, is sex-related pathophysiologic predisposition or sex difference in meeting ROP screening criteria. Objective To evaluate the association of sex with the development of treatment-warranted ROP. Data Sources PubMed, Embase, and Web of Science databases were searched from 2000 to 2022. The search strategy used keywords including retinopathy of prematurity or ROP or retrolental fibroplasia and treatment or anti-VEGF or bevacizumab or ranibizumab or aflibercept or conbercept or laser or cryotherapy and gender or sex or male or female and medical subject headings terms. Study Selection All studies reporting on treatment with anti-vascular endothelial growth factor, laser photocoagulation, and/or cryotherapy for ROP were identified. Studies reporting sex distribution in the treatment group were included in the meta-analysis. Exclusion criteria included case reports, case series of fewer than 10 treated patients, systematic reviews, conference abstracts, letters to the editor, animal studies, and non-English records. Data Extraction and Synthesis Two reviewers independently screened and extracted the data following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The proportions of treated male and female infants were combined using random-effects meta-analysis. Main Outcomes and Measures Numbers and percentages of male and female infants treated for ROP. Results Of 11 368 identified studies, 316 met inclusion criteria, yielding a total of 31 026 treated patients. A higher percentage of male infants were treated for ROP (55% [95% CI, 0.54%-0.55%]), with low heterogeneity between studies (I2 = 34%; P < .001). Thirty-eight studies reported sex distribution in the screened population (170 053 patients; 92 612 [53%] male vs 77 441 [47%] female). There was no significant difference in the odds of receiving treatment between screened male and female infants (pooled odds ratio, 1.04 [95% CI, 0.91-1.18]; P = .67). Conclusions and Relevance More male infants are treated for ROP than female infants. This could be due to a known relative pathophysiological fragility of preterm male infants in addition to a difference in ROP screening rates, with more male infants meeting the criteria than female infants. These findings have implications for future studies and may prompt more careful clinical monitoring of male neonates.
Collapse
Affiliation(s)
- Sandra Hoyek
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston
| | - Bryan L. Peacker
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston
| | - Luis A. Acaba-Berrocal
- Department of Ophthalmology, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago
| | - Hasenin Al-Khersan
- Bascom Palmer Eye Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida
| | - Yan Zhao
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston
| | | | - Audina M. Berrocal
- Bascom Palmer Eye Institute, University of Miami Leonard M. Miller School of Medicine, Miami, Florida
| | - Nimesh A. Patel
- Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston
| |
Collapse
|
48
|
Jani P, Skelton H, Goyen TA, Fitzgerald DA, Waters K, Badawi N, Tracy M. Regional oxygenation, perfusion and body and/or head position: Are preterm infants adversely impacted? A systematic review. Paediatr Respir Rev 2022; 43:26-37. [PMID: 34654646 DOI: 10.1016/j.prrv.2021.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 09/14/2021] [Indexed: 12/14/2022]
Abstract
This review addresses regional oxygenation and perfusion changes for preterm infants and changes with body position, with or without head rotation. Future directions for improving neurodevelopmental and clinical outcomes are suggested. The MEDLINE, Embase and Scopus databases were searched up to July 2021. Fifteen out of 470 studies met the inclusion criteria. All were prospective, observational studies with a moderate risk of bias. Significant variation was found for the baseline characteristics of the cohort, postnatal ages, and respiratory support status at the time of monitoring. When placed in a non-supine position, preterm infants showed a transient reduction in cardiac output and stroke volume without changes to heart rate or blood pressure. No studies reported on long-term neurodevelopmental outcomes. Overall, side lying or prone position does not appear to adversely affect regional, and specifically cerebral, oxygenation or cerebral perfusion. The effect of head rotation on regional oxygenation and perfusion remains unclear.
Collapse
Affiliation(s)
- Pranav Jani
- Westmead Hospital, Department of Neonatology, Westmead, Australia; The University of Sydney, Sydney, Australia
| | - Hannah Skelton
- Westmead Hospital, Department of Neonatology, Westmead, Australia; Western Sydney University, Sydney, Australia
| | - Traci-Anne Goyen
- Westmead Hospital, Department of Neonatology, Westmead, Australia
| | - Dominic A Fitzgerald
- The University of Sydney, Sydney, Australia; The Children's Hospital at Westmead, Department of Sleep Medicine, Westmead, Australia; The Children's Hospital at Westmead, Department of Respiratory Medicine, Westmead, Australia
| | - Karen Waters
- The University of Sydney, Sydney, Australia; The Children's Hospital at Westmead, Department of Sleep Medicine, Westmead, Australia
| | - Nadia Badawi
- The University of Sydney, Sydney, Australia; The Children's Hospital at Westmead, Grace Centre for Newborn Intensive Care, Westmead, Australia; Cerebral Palsy Alliance Research Institute, Sydney, Australia
| | - Mark Tracy
- Westmead Hospital, Department of Neonatology, Westmead, Australia; The University of Sydney, Sydney, Australia
| |
Collapse
|
49
|
Sabri K, Ells AL, Lee EY, Dutta S, Vinekar A. Retinopathy of Prematurity: A Global Perspective and Recent Developments. Pediatrics 2022; 150:188757. [PMID: 35948728 DOI: 10.1542/peds.2021-053924] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/26/2022] [Indexed: 11/24/2022] Open
Abstract
Retinopathy of prematurity (ROP) is a significant cause of potentially preventable blindness in preterm infants worldwide. It is a disease caused by abnormal retinal vascularization that, if not detected and treated in a timely manner, can lead to retinal detachment and severe long term vision impairment. Neonatologists and pediatricians have an important role in the prevention, detection, and management of ROP. Geographic differences in the epidemiology of ROP have been seen globally over the last several decades because of regional differences in neonatal care. Our understanding of the pathophysiology, risk factors, prevention, screening, diagnosis, and treatment of ROP have also evolved over the years. New technological advances are now allowing for the incorporation of telemedicine and artificial intelligence in the management of ROP. In this comprehensive update, we provide a comprehensive review of pathophysiology, classification, diagnosis, global screening, and treatment of ROP. Key historical milestones as well as touching upon the very recent updates to the ROP classification system and technological advances in the field of artificial intelligence and ROP will also be discussed.
Collapse
Affiliation(s)
- Kourosh Sabri
- Department of Ophthalmology, McMaster University, Ontario, Canada
| | - Anna L Ells
- Calgary Retina Consultants, University of Calgary, Calgary, Alberta, Canada
| | - Elizabeth Y Lee
- Department of Ophthalmology, McMaster University, Ontario, Canada
| | - Sourabh Dutta
- Department of Pediatrics, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Anand Vinekar
- Department of Pediatric Retina, Narayana Nethralaya Eye Institute, Bangalore, India
| |
Collapse
|
50
|
Srivatsa B, Hagan JL, Clark RH, Kupke KG. Oxygenation Factors Associated with Retinopathy of Prematurity in Infants of Extremely Low Birth Weight. J Pediatr 2022; 247:46-52.e4. [PMID: 35427689 DOI: 10.1016/j.jpeds.2022.03.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/06/2022] [Accepted: 03/21/2022] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To study characteristics of oxygenation during the first 2 postnatal months and correlation with the occurrence and severity of retinopathy of prematurity (ROP) among infants of extremely low birth weight. STUDY DESIGN This retrospective study analyzed the incidence and severity of hyperoxemia and hypoxemia while on respiratory support with or without supplemental oxygen among infants of extremely low birth weight (birth weight <1000 g) admitted to the neonatal intensive care unit during 2016-2020. The findings were correlated with the occurrence and severity of ROP after adjusting for baseline covariates. RESULTS After adjusting for differences in baseline demographic and clinical features, the group with severe ROP was exposed to greater fraction of inspired oxygen (FiO2) (P = .001) and experienced more frequent FiO2 titration adjustments (P = .001) compared with the group without ROP. Ambient air hyperoxemia occurred more frequently in the group without ROP (P = .003), and iatrogenic hyperoxemia occurred more frequently in the group with severe ROP (P = .046). There were no differences in the severity of ambient and iatrogenic hyperoxemia in the study population. The group with severe ROP demonstrated more hypoxemic episodes (P = .01) and longer time spent in the severe hypoxemic range (P = .005) compared with the group without ROP. CONCLUSIONS Severe ROP is associated with greater FiO2 exposure, increased iatrogenic hyperoxemia, decreased ambient air hyperoxemia, and increased hypoxemia in infants of extremely low birth weight despite a greater frequency of FiO2 titration. This study illustrates the need for automated closed loop FiO2 delivery systems to further optimize oxygen saturation targeting in this high-risk population.
Collapse
Affiliation(s)
- Bharath Srivatsa
- Neonatology Associates of Atlanta, Atlanta, GA; Northside Hospital, Atlanta, GA; Pediatrix Medical Group, Sunrise, FL.
| | | | | | - Kenneth G Kupke
- Neonatology Associates of Atlanta, Atlanta, GA; Northside Hospital, Atlanta, GA; Pediatrix Medical Group, Sunrise, FL
| |
Collapse
|