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Gurram Venkata SKR, Lodha A, Hicks M, Jain A, Lapointe A, Makary H, Kanungo J, Lee KS, Ye X, Shah PS, Soraisham AS. Neurodevelopmental outcomes of preterm neonates receiving rescue inhaled nitric oxide in the first week of age: a cohort study. Arch Dis Child Fetal Neonatal Ed 2024; 109:211-216. [PMID: 37890983 DOI: 10.1136/archdischild-2023-325418] [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: 02/03/2023] [Accepted: 09/11/2023] [Indexed: 10/29/2023]
Abstract
OBJECTIVE To assess the neurodevelopmental outcomes of preterm neonates who received inhaled nitric oxide (iNO) in the first week of age for hypoxaemic respiratory failure (HRF). METHODS In this retrospective cohort study, we included neonates born at <29 weeks gestational age (GA) between January 2010 and December 2018 who had a neurodevelopmental assessment at 18-24 months corrected age (CA) at one of the Canadian Neonatal Follow-Up Network clinics. The primary outcome was neurodevelopmental impairment (NDI). We performed propensity score-matched analysis to compare the outcomes of those who received and did not receive iNO. RESULTS Of the 5612 eligible neonates, 460 (8.2%) received iNO in the first week of age. Maternal age, receipt of antenatal corticosteroids, GA and birth weight were lower in the iNO group compared with the no-iNO group. Neonates in the iNO group had higher illness severity scores and higher rates of preterm prolonged rupture of membranes and were small for GA. Severe brain injury, bronchopulmonary dysplasia and mortality were higher in the iNO group. Of the 4889 survivors, 3754 (77%) neonates had follow-up data at 18-24 months CA. After propensity score matching, surviving infants who received rescue iNO were not associated with higher odds of NDI (adjusted OR 1.34; 95% CI 0.85 to 2.12). CONCLUSIONS In preterm neonates <29 weeks GA with HRF, rescue iNO use was not associated with worse neurodevelopmental outcomes among survivors who were assessed at 18-24 months CA.
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Affiliation(s)
| | - Abhay Lodha
- Pediatrics, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Matthew Hicks
- Pediatrics, University of Alberta Faculty of Medicine & Dentistry, Edmonton, Alberta, Canada
| | - Amish Jain
- Pediatrics, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Anie Lapointe
- Pediatrics, University of Montreal Faculty of Medicine, Montreal, Quebec, Canada
| | - Hala Makary
- Pediatrics, Dalhousie University Faculty of Medicine, Halifax, Nova Scotia, Canada
| | - Jaideep Kanungo
- Pediatrics, The University of British Columbia Faculty of Medicine, Vancouver, British Columbia, Canada
| | - Kyong-Soon Lee
- Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Xiang Ye
- Maternal-Infant Care Research Centre, Mount Sinai Hospital Pediatrics, Toronto, Ontario, Canada
| | - Prakesh S Shah
- Pediatrics, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Amuchou S Soraisham
- Pediatrics, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
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2
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Mullaly R, El-Khuffash AF. Haemodynamic assessment and management of hypotension in the preterm. Arch Dis Child Fetal Neonatal Ed 2024; 109:120-127. [PMID: 37173119 DOI: 10.1136/archdischild-2022-324935] [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: 11/18/2022] [Accepted: 05/02/2023] [Indexed: 05/15/2023]
Abstract
The management of low blood flow states in premature neonates is fraught with many challenges. We remain over-reliant on regimented stepwise protocols that use mean blood pressure as a threshold for intervention to guide treatment, without giving due consideration to the underlying pathophysiology. The current available evidence does not reflect the need to concentrate on the unique pathophysiology of the preterm infant and thus leads to widespread misuse of vasoactive agents that often do not provide the desired clinical effect. Therefore, understanding the underlying pathophysiological underpinnings of haemodynamic compromise may better guide choice of agent and assess physiological response to the selected intervention.
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Affiliation(s)
- Rachel Mullaly
- Department of Paediatrics, Royal College of Surgeons in Ireland, Dublin, Ireland
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3
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Baczynski M, Jasani B, De Castro C, Dani C, Subhedar NV, Chandrasekharan P, Lakshminrusimha S, McNamara PJ, Bischoff AR, Jain A. Association between immediate oxygenation response and survival in preterm infants receiving rescue inhaled nitric oxide therapy for hypoxemia from pulmonary hypertension: A systematic review and meta-analysis. Early Hum Dev 2023; 184:105841. [PMID: 37542786 DOI: 10.1016/j.earlhumdev.2023.105841] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/22/2023] [Accepted: 08/01/2023] [Indexed: 08/07/2023]
Abstract
PURPOSE To investigate whether immediate response to inhaled nitric oxide (iNO) therapy is associated with reduced mortality in preterm infants with hypoxemic respiratory failure (HRF) and pulmonary hypertension (PH). METHODS A systematic review and meta-analysis of observational studies was conducted to examine the association between immediate response (improved oxygenation ≤6 h) compared to non-response, and all-cause mortality among preterm infants <34 weeks gestational age without congenital anomalies or genetic disorders who received iNO treatment. Adjusted and unadjusted odds ratio, were pooled using a random effects meta-analysis Hartung-Knapp-Sidik-Jonkman approach. Subgroup analyses were planned for infants with preterm premature rupture of membranes (PPROM) and those treated within 72 h after birth. RESULTS The primary analysis included 5 eligible studies, a total of 400 infants (196 responders; 204 non-responders). The studies were rated as low to moderate risk of bias based on the Quality in Prognostic Studies tool. Immediate iNO responsiveness was associated with reduced odds of mortality [odds ratio (OR) 0.22, 95 % confidence interval (95 % CI) (0.10-0.49)]. Although there was insufficient data for a subgroup analysis of infants with PPROM, infants treated with iNO within 72 h demonstrated consistent findings of reduced mortality [OR 0.21 95 % CI (0.13-0.36)]. Based on the GRADE approach, considering the risk of bias of included studies, the overall strength of evidence was rated as moderate. CONCLUSION There is evidence to suggest that immediate improvement in oxygenation following iNO therapy is associated with reduced odds of mortality before discharge in preterm infants with HRF and clinically suspected or confirmed PH.
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Affiliation(s)
- Michelle Baczynski
- Department of Pediatrics, Mount Sinai Hospital, Toronto, Ontario, Canada.
| | - Bonny Jasani
- Department of Neonatology, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Charmaine De Castro
- Sidney Liswood Health Sciences Library, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Carlo Dani
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy; Department of Neurosciences, Psychology, Drug Research, and Child Health, University of Florence, Florence, Italy
| | - Nimish V Subhedar
- Department of Neonatal Medicine, Liverpool Women's Hospital, Liverpool, UK
| | | | | | - Patrick J McNamara
- Division of Neonatology, Department of Pediatrics, University of Iowa, USA
| | | | - Amish Jain
- Department of Pediatrics, Mount Sinai Hospital, Toronto, Ontario, Canada
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4
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Mullaly R, McCallion N, El-Khuffash A. Inhaled nitric oxide in preterm neonates with preterm prelabour rupture of membranes, a systematic review. Acta Paediatr 2023; 112:358-371. [PMID: 36377399 DOI: 10.1111/apa.16596] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 11/16/2022]
Abstract
AIM To perform a systematic literature review to determine the effect of inhaled nitric oxide (iNO) on oxygenation, mortality and morbidity in preterm neonates with preterm prelabour rupture of membranes (PPROM) and early hypoxaemic respiratory failure (HRF). METHODS MEDLINE, Embase, Cochrane Central Register of Controlled Trials, ClinicalTrials.gov, Web of Science, Zetoc and ProQuest were searched. Studies including neonates <34 weeks' gestation with PPROM, oligohydramnios or pulmonary hypoplasia and HRF in the first 28 days of life treated with iNO were included. Studies were critically appraised and assessed for potential risk of bias using standardised checklists. RESULTS Six hundred and two records remained after duplicates were removed. Seven studies were included in the critical appraisal process. Quality of available evidence was very low to low. Six studies described an improvement in oxygenation after commencement of iNO. One hundred and three of 284 (36%) neonates exposed to iNO died. Seventy-seven of 92 (84%) neonates that had an echocardiogram performed before commencement of iNO had pulmonary hypertension (PH) present. CONCLUSION iNO may improve oxygenation when standard care fails. Improvement in oxygenation is likely associated with increase in survival. Survival may lead to an increase in morbidity. Efficacy of iNO in this cohort is likely secondary to relatively high prevalence of PH.
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Affiliation(s)
- Rachel Mullaly
- The Rotunda Hospital, Dublin, Ireland.,School of Health Sciences, University of Southampton, Southampton, UK.,Department of Paediatrics, Royal College of Surgeons of Ireland, Dublin, Ireland
| | - Naomi McCallion
- The Rotunda Hospital, Dublin, Ireland.,Department of Paediatrics, Royal College of Surgeons of Ireland, Dublin, Ireland
| | - Afif El-Khuffash
- The Rotunda Hospital, Dublin, Ireland.,Department of Paediatrics, Royal College of Surgeons of Ireland, Dublin, Ireland
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Dassios T. Critical functional lung volumes in neonatal intensive care: evidence and clinical applications. Pediatr Res 2023:10.1038/s41390-022-02450-9. [PMID: 36624281 DOI: 10.1038/s41390-022-02450-9] [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: 06/17/2022] [Revised: 11/08/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023]
Abstract
Respiratory disease is common in premature and sick newborn infants and can often necessitate the initiation of intensive care. Newborn infants often suffer from conditions that are associated with decreased lung volumes that occur as a result of abnormal or incomplete lung development. Such conditions are prematurity and respiratory distress syndrome, preterm premature rupture of membranes and the ensuing pulmonary hypoplasia and congenital lung anomalies such as congenital diaphragmatic hernia. These diseases have a structural component manifesting with lower lung volumes and a functional component that can present with increased oxygen and ventilatory requirements. The corresponding decreased functional lung volume is possibly responsible for some unfavourable pulmonary outcomes. Some infants are unable to wean off invasive respiratory support and, in extreme cases, unable to sustain independent breathing that can lead to long-term invasive ventilation or subsequent death. The aim of this review is to summarise the available evidence behind the concept of a critical functional lung volume in neonatal intensive care and describe the clinical implications that arise from decreased functional lung volumes in the main high-risk populations of newborn infants. IMPACT: Newborn infants suffer from diseases such as respiratory distress syndrome, pulmonary hypoplasia and congenital diaphragmatic hernia that are associated with a decrease in the total lung volume and impaired lung function. Critically decreased functional lung volumes during neonatal care are associated with failure to wean off invasive respiratory support, increased mortality and possibly longer-term respiratory complications.
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Affiliation(s)
- Theodore Dassios
- Neonatal Intensive Care Centre, King's College Hospital NHS Foundation Trust, London, UK. .,Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.
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6
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Kharrat A, McNamara PJ, Weisz DE, Kelly E, Masse E, Mukerji A, Louis D, Afifi J, Ye XY, Shah PS, Jain A. Clinical burden associated with therapies for cardio-pulmonary critical decompensation in preterm neonates across Canadian neonatal intensive care units. Eur J Pediatr 2022; 181:3319-3330. [PMID: 35779092 DOI: 10.1007/s00431-022-04508-6] [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: 02/08/2022] [Revised: 05/07/2022] [Accepted: 05/14/2022] [Indexed: 12/01/2022]
Abstract
UNLABELLED The aim of this retrospective cohort study was to study the clinical burden associated with cardio-pulmonary critical decompensations (CPCDs) in preterm neonates and factors associated with mortality. Through the Canadian Neonatal Network (30 tertiary NICUs, 2010-2017), we identified infants < 32-week gestational age with CPCDs, defined by "significant exposure" to cardiotropes and/or inhaled nitric oxide (iNO): (1) either therapy for ≥ 3 consecutive days, (2) both for ≥ 2 consecutive days, or (3) any exposure within 2 days of death. Early CPCDs (≤ 3 days of age) and late CPCDs (> 3 days) were examined separately. Outcomes included CPCD-incidence, mortality, and inter-site variability using standardized ratios (observed/adjusted expected rate) and network funnel plots. Mixed-effects analysis was used to quantify unit-level variability in mortality. Overall, 10% of admissions experienced CPCDs (n = 2915). Late CPCDs decreased by ~ 5%/year, while early CPCDs were unchanged during the study period. Incidence and CPCD-associated mortality varied between sites, for both early (0.6-7.5% and 0-100%, respectively) and late CPCDs (2.5-15% and 14-83%, respectively), all p < 0.01. Units' late-CPCD incidence and mortality demonstrated an inverse relationship (slope = -2.5, p < 0.01). Mixed-effects analysis demonstrated clustering effect, with 6.4% and 8.6% of variability in mortality after early and late CPCDs respectively being site-related, unexplained by available patient-level characteristics or unit volume. Mortality was higher with combined exposure than with only-cardiotropes or only-iNO (41.3%, 24.8%, 21.5%, respectively; p < 0.01). CONCLUSIONS Clustering effects exist in CPCD-associated mortality among Canadian NICUs, with higher incidence units showing lower mortality. These data may aid network-level benchmarking, patient-level risk stratification, parental counseling, and further research and quality improvement work. WHAT IS KNOWN • Preterm neonates remain at high risk of acute and chronic complications; the most critically unwell require therapies such as cardiotropic drugs and inhaled nitric oxide. • Infants requiring these therapies are known to be at high risk for adverse neonatal outcomes and for mortality. WHAT IS NEW • This study helps illuminate the national burden of acute cardio-pulmonary critical decompensation (CPCD), defined as the need for cardiotropic drugs or inhaled nitric oxide, and highlights the high risk of morbidity and mortality associated with this disease state. • Significant nationwide variability exists in both CPCD incidence and associated mortality; a clustering effect was observed with higher incidence sites showing lower CPCD-associated mortality.
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Affiliation(s)
- Ashraf Kharrat
- Department of Paediatrics, Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada. .,Department of Paediatrics, University of Toronto, Toronto, ON, Canada.
| | | | - Dany E Weisz
- Department of Paediatrics, University of Toronto, Toronto, ON, Canada.,Department of Newborn and Developmental Paediatrics, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Edmond Kelly
- Department of Paediatrics, Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada.,Department of Paediatrics, University of Toronto, Toronto, ON, Canada
| | - Edith Masse
- Department of Pediatrics, University of Sherbrooke, Sherbrooke, Canada
| | - Amit Mukerji
- Department of Pediatrics, McMaster University, Hamilton, Canada
| | - Deepak Louis
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Canada
| | - Jehier Afifi
- Department of Pediatrics, Dalhousie University, Halifax, Canada
| | - Xiang Y Ye
- Maternal-Infant Care Research Centre, Mount Sinai Hospital, Toronto, ON, Canada
| | - Prakesh S Shah
- Department of Paediatrics, Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada.,Department of Paediatrics, University of Toronto, Toronto, ON, Canada.,Maternal-Infant Care Research Centre, Mount Sinai Hospital, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Toronto, Canada
| | - Amish Jain
- Department of Paediatrics, Mount Sinai Hospital, 600 University Avenue, Toronto, ON, M5G 1X5, Canada.,Department of Paediatrics, University of Toronto, Toronto, ON, Canada.,Lunenfeld-Tanenbaum Research Institute, Toronto, Canada
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7
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Peluso AM, Othman HF, Karnati S, Sammour I, Aly HZ. Epidemiologic evaluation of inhaled nitric oxide use among neonates with gestational age less than 35 weeks. Pediatr Pulmonol 2022; 57:427-434. [PMID: 34842352 DOI: 10.1002/ppul.25775] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 11/16/2021] [Accepted: 11/26/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND AND OBJECTIVES The use of inhaled nitric oxide (iNO) in +late preterm and term infants with pulmonary hypertension is Food and Drug Administration (FDA) approved and has improved outcomes and survival. iNO use is not FDA approved for preterm infants and previous studies show no mortality benefit. The objectives were 1) to determine the usage of iNO among preterm neonates <35 weeks before and after the 2010 National Institutes of Health consensus statement and 2) to evaluate characteristics and outcomes among preterm neonates who received iNO. METHODS This is a population-based cross-sectional study. Billing and procedure codes were used to determine iNO usage. Data were queried from the National Inpatient Sample from 2004 to 2016. Neonates were included if gestational age was <35 weeks. The epochs were spilt into 2004-2010 (Epoch 1) and 2011-2016 (Epoch 2). Prevalence of iNO use, mortality, bronchopulmonary dysplasia (BPD), intraventricular hemorrhage, length of stay, mechanical ventilation, and cost of hospitalization. RESULTS There were 4865 preterm neonates <35 weeks who received iNO. There was a significant increase in iNO use during Epoch 2 (p < 0.001). There was significantly higher use in Epoch 2 among neonates small for gestational age (SGA) 2.3% versus 7.2%, congenital heart disease (CHD) 11.1% versus 18.6%, and BPD 35.2% versus 46.8%. Mortality was significantly lower in Epoch 2 19.8% versus 22.7%. CONCLUSION Usage of iNO was higher after the release of the consensus statement. The increased use of iNO among preterm neonates may be targeted at specific high-risk populations such as SGA and CHD neonates. There was lower mortality in Epoch 2; however, the cost was doubled.
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Affiliation(s)
- Allison M Peluso
- Department of Neonatology, Cleveland Clinic Children's Hospital, Cleveland, Ohio, USA
| | - Hasan F Othman
- Department of Pediatrics, Michigan State University/Sparrow Health System, Lansing, Michigan, USA
| | - Sreenivas Karnati
- Department of Neonatology, Cleveland Clinic Children's Hospital, Cleveland, Ohio, USA
| | - Ibrahim Sammour
- Department of Neonatology, Cleveland Clinic Children's Hospital, Cleveland, Ohio, USA
| | - Hany Z Aly
- Department of Neonatology, Cleveland Clinic Children's Hospital, Cleveland, Ohio, USA
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Dassios T, Adu J, Greenough A. Brief research report: Chest radiographic thoracic area in term ventilated infants without respiratory disease. Front Pediatr 2022; 10:1042341. [PMID: 36699308 PMCID: PMC9869030 DOI: 10.3389/fped.2022.1042341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 12/19/2022] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE To report values of the chest radiographic thoracic area (CRTA) in ventilated, term-born infants without respiratory disease and to evaluate whether CRTA is related to demographic data at birth. METHODS Retrospective, observational cohort study in a tertiary neonatal unit at King's College Hospital NHS Foundation Trust, London, UK.Newborn infants born after 36 completed weeks of gestation, ventilated for poor perinatal adaptation or hypoxic ischaemic encephalopathy without respiratory disease and admitted in a recent eight-year period (2014-2022).The CRTA was assessed by free-hand tracing of the perimeter of the thoracic area as outlined by the diaphragm and the rib cage excluding the mediastinal structures and was calculated using the Sectra PACS software. RESULTS One hundred and twenty-one infants (75 male) were included with a median (IQR) gestation of 40 (38-41) weeks and birth weight of 3.41 (3.04-3.75) kg. The median (IQR) CRTA was 2,589 (2,167-2,943) mm2 and was significantly related to birth weight (r = 0.316, p = 0.003), gestation at birth (r = 0.193, p = 0.032) and birth weight z-score (r = 0.187, p = 0.038). CONCLUSIONS We report values of the chest radiographic thoracic area in ventilated term-born infants which could be used as reference for determining respiratory disease severity.
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Affiliation(s)
- Theodore Dassios
- Neonatal Intensive Care Centre, King's College Hospital NHS Foundation Trust, London, United Kingdom.,Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - John Adu
- Department of Radiology, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Anne Greenough
- Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom.,National Institute for Health Research (NIHR) Biomedical Research Centre Based at Guy's and St Thomas' NHS Foundation Trust and King's College, London, United Kingdom
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9
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Vieira F, Makoni M, Szyld E, Sekar K. The Controversy Persists: Is There a Qualification Criterion to Utilize Inhaled Nitric Oxide in Pre-term Newborns? Front Pediatr 2021; 9:631765. [PMID: 33869113 PMCID: PMC8044816 DOI: 10.3389/fped.2021.631765] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 03/01/2021] [Indexed: 11/22/2022] Open
Abstract
Inhaled nitric oxide (iNO) use in premature newborns remains controversial among clinicians. In 2014, the American Academy of Pediatrics, Committee on Fetus and Newborn released a statement that the available data do not support routine iNO use in pre-term newborns. Despite the absence of significant benefits, 2016 California data showed that clinicians continue to utilize iNO in pre-term infants. With studies as recent as January 2017, the Cochrane review confirmed no major advantages of iNO in pre-term newborns. Still, it recognized that a subset of pre-term infants with pulmonary hypertension (PHTN) had not been separately investigated. Furthermore, recent non-randomized controlled trials have suggested that iNO may benefit specific subgroups of pre-term newborns, especially those with PHTN, prolonged rupture of membranes, and antenatal steroid exposure. Those pre-term infants who showed a clinical response to iNO had increased survival without disability. These findings underscore the need for future studies in pre-term newborns with hypoxemic respiratory failure and PHTN. This review will discuss the rationale for using iNO, controversies regarding the diagnosis of PHTN, and additional novel approaches of iNO treatment in perinatal asphyxia and neonatal resuscitation in the pre-term population < 34 weeks gestation.
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Affiliation(s)
- Frederico Vieira
- Neonatal Perinatal Section, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Marjorie Makoni
- Neonatal Perinatal Section, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Edgardo Szyld
- Neonatal Perinatal Section, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Krishnamurthy Sekar
- Neonatal Perinatal Section, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
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