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Gan Y, Ying J, Qiu X, You S, Zhang T, Ruan T, Zhou R, Ye Y, Yue Y, Zhang L, Mu D. Value of near-infrared spectroscopy in evaluating the risk of neonatal necrotizing enterocolitis: A systematic review and meta-analysis. Early Hum Dev 2024; 195:106083. [PMID: 39059341 DOI: 10.1016/j.earlhumdev.2024.106083] [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: 06/15/2024] [Revised: 07/20/2024] [Accepted: 07/22/2024] [Indexed: 07/28/2024]
Abstract
PURPOSE Recently, near-infrared spectroscopy (NIRS) has been proposed for diagnosing patients with neonatal necrotizing enterocolitis (NEC). However, a consensus on the credibility of NIRS in evaluating NEC risk has not been reached. This meta-analysis aimed to evaluate the relationship between NEC and splanchnic regional tissue oxygen saturation (SrSO2) and cerebral regional tissue oxygen saturation (CrSO2) detected by NIRS to clarify the clinical value of NIRS in evaluating the risk of NEC. METHODS Studies using NIRS to monitor regional tissue oxygen saturation (rSO2) in neonates with NEC published in PubMed, Web of Science, Embase, and the Cochrane Library were searched from their inception to 30 July 2023. Mean difference (MD), pooled sensitivity, and pooled specificity, along with their 95 % confidence intervals (CI), were calculated, and the random-effects model was used for analysis. This study was registered with PROSPERO (no. CRD42022326783). RESULTS Fourteen studies including 938 neonates (172 NEC, 766 controls) were identified. SrSO2 was significantly decreased in patients with NEC (MD: -12.52, 95 % CI: -15.95, -9.08; P < 0.00001), and this decrease was observed even before the diagnosis of NEC (MD: -13.79, 95 % CI: -17.97, -9.62; P < 0.00001). The pooled sensitivity and specificity of SrSO2 were 0.80 (95 % CI: 0.69, 0.88) and 0.90 (95 % CI: 0.61, 0.98), respectively. However, no significant difference in CrSO2 was found (MD: -4.37, 95 % CI: -10.62, 1.88; P = 0.17). CONCLUSIONS SrSO2, detected by NIRS, could be a valuable non-invasive method for differentiating NEC from non-NEC neonates. It could differentiate prior to NEC diagnosis.
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Affiliation(s)
- Yan Gan
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Junjie Ying
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China
| | - Xia Qiu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Siyi You
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Ting Zhang
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Tiechao Ruan
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Ruixi Zhou
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Yanxiu Ye
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Yan Yue
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Li Zhang
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China.
| | - Dezhi Mu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China.
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古丽佐合热· 阿, 努尔亚· 热. [Application of near-infrared spectroscopy in the early identification of neonatal gastrointestinal diseases]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2024; 26:523-528. [PMID: 38802915 PMCID: PMC11135058 DOI: 10.7499/j.issn.1008-8830.2311148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/19/2024] [Indexed: 05/29/2024]
Abstract
Necrotizing enterocolitis (NEC) is one of the most common gastrointestinal diseases in neonatal intensive care units, characterized by rapid progression and a high mortality rate. Local intestinal ischemia and hypoxia are significant contributors to NEC. Feeding intolerance (FI), which refers to a range of gastrointestinal manifestations arising from the inability to tolerate enteral nutrition, is one of the most common clinical issues in neonates, and preventing and treating FI is crucial for improving neonatal survival rates. Near-infrared spectroscopy is a clinical tool that can be used at the bedside to monitor regional oxygen saturation. It is non-invasive, reliable, and sustainable, and its feasibility and safety in assessing intestinal blood circulation have been validated. Early identification of intestinal ischemia and differentiation of FI from precursor symptoms of NEC, as well as predicting the occurrence of NEC, are extremely important for reducing intestinal injury and adverse long-term outcomes. In recent years, there has been new research progress related to the monitoring of intestinal tissue oxygen saturation and cerebral oxygen saturation for the early identification of FI and precursor symptoms of NEC, and this article provides a review of these developments.
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Kooi EMW, Mintzer JP, Rhee CJ, Ergenekon E, Schwarz CE, Pichler G, de Boode WP. Neonatal somatic oxygenation and perfusion assessment using near-infrared spectroscopy : Part of the series on near-infrared spectroscopy by the European Society of Paediatric Research Special Interest Group "Near-Infrared Spectroscopy". Pediatr Res 2024:10.1038/s41390-024-03226-z. [PMID: 38730022 DOI: 10.1038/s41390-024-03226-z] [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: 11/15/2023] [Revised: 02/27/2024] [Accepted: 04/09/2024] [Indexed: 05/12/2024]
Abstract
In this narrative review, we summarize the current knowledge and applications of somatic near-infrared spectroscopy (NIRS), with a focus on intestinal, renal, limb, and multi-site applications in neonates. Assessing somatic oxygenation at various body locations in neonates may aid in the understanding of underlying pathophysiology of organ injury. Considering cerebral autoregulation may be active to protect the brain during systemic circulatory failure, peripheral somatic oxygenation may potentially provide an early indication of neonatal cardiovascular failure and ultimate hypoxemic injury to vital organs including the brain. Certain intestinal oxygenation patterns appear to be associated with the onset and course of necrotizing enterocolitis, whereas impaired renal oxygenation may indicate the onset of acute kidney injury after various types of hypoxic events. Peripheral muscle oxygenation measured at a limb may be particularly effective in the early prediction of shock in neonates. Using multi-site NIRS may complement current approaches and clinical investigations to alert for neonatal tissue hypoxemia, and potentially even guide management. However, somatic NIRS has its inherent limitations in regard to accuracy. Interpretation of organ-specific values can also be challenging. Last, currently there are limited prospective intervention studies, and clinical benefits need to be examined further, after the clarification of critical threshold-values. IMPACT: The assessment of somatic oxygenation using NIRS may contribute to the prediction of specific diseases in hemodynamically challenged neonates. Furthermore, it may give early warning signs for impending cardiovascular failure, and impaired cerebral circulation and oxygenation. We present a comprehensive overview of the literature on applications of NIRS to various somatic areas, with a focus on its potential clinical applicability, including future research directions. This paper will enable prospective standardized studies, and multicenter collaboration to obtain statistical power, likely to advance the field.
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Affiliation(s)
- Elisabeth M W Kooi
- Division of Neonatology, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
| | - Jonathan P Mintzer
- Division of Newborn Medicine, Department of Pediatrics, Mountainside Medical Center, Montclair, NJ, USA
| | | | | | - Christoph E Schwarz
- Department of Neonatology, Tübingen University Hospital, Tübingen, Germany
- Department of Neonatology, Center for Pediatric and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| | - Gerhard Pichler
- Department of Pediatrics, Medical University of Graz, Graz, Austria
| | - Willem P de Boode
- Department of Neonatology, Radboud University Medical Center, Radboud Institute for Health Sciences, Amalia Children's Hospital, Nijmegen, The Netherlands
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Meng W, Wang Q, Xu Q, Gao H, Zhou Y, Shao W. Biomarkers in the Severity of Necrotizing Enterocolitis in Preterm Infants: A Pilot Study. Int J Gen Med 2024; 17:1017-1023. [PMID: 38505145 PMCID: PMC10950000 DOI: 10.2147/ijgm.s446378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 03/05/2024] [Indexed: 03/21/2024] Open
Abstract
Background The occurrence of necrotizing enterocolitis (NEC) is a common and severe disease of the digestive system in neonates. This study aims to assess the value of the intestinal tissue oxygen saturation (rintSO2) combined with the levels of procalcitonin (PCT) and mean platelet volume (MPV) in predicting the severity of NEC in preterm infants. Methods This experiment was a retrospective cohort study conducted in the Department of Pediatrics, Hongqi Hospital Affiliated to Mudanjiang Medical University between January 2017 and July 2022. Premature neonates with NEC were enrolled and divided into mild-moderate NEC group and severe NEC group according to Bell's stage. The general information data, rintSO2 and blood parameters such as the white blood cell (WBC) count, platelet count (PLT), PCT, MPV, red blood cell distribution width (RDW), hemoglobin (Hb), C-reactive protein (CRP) were compared between the two groups. Results A total of 122 patients were enrolled, including 79 mild-moderate NEC and 43 severe NEC. The rintSO2 was lower in severe group than in mild-moderate group (P = 0.042), the PCT and MPV were both higher in severe group than in mild-moderate group (P = 0.048, P = 0.049). The results of logistic regression suggested that the rintSO2 (OR = 1.491, P = 0.003), PCT (OR = 3.071, P = 0.001) and MPV (OR = 4.027, P = 0.015) were independent predictive factors for severity of NEC. The area under the curve (AUC) of the rintSO2 combined with PCT and MPV showed good diagnostic ability in the severity of NEC. Conclusion The rintSO2 combined with PCT and MPV may be considered as the early biomarkers in the severity of NEC and could help us to diagnose the case early with early treatment with better prognosis.
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Affiliation(s)
- Wei Meng
- Department of Pediatric Internal Medicine, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang, People’s Republic of China
| | - Qing Wang
- Department of Pediatric Internal Medicine, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang, People’s Republic of China
| | - Qingyu Xu
- Department of Pediatrics Surgery, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang, People's Republic China
| | - Hongli Gao
- Department of Digestive Endoscopy Center, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang, People’s Republic of China
| | - Yunjun Zhou
- Department of Pediatric Internal Medicine, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang, People’s Republic of China
| | - Wei Shao
- Department of Pediatric Internal Medicine, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang, People’s Republic of China
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Marin T, Moore J. Understanding Near-Infrared Spectroscopy: An Update. Crit Care Nurs Clin North Am 2024; 36:41-50. [PMID: 38296375 DOI: 10.1016/j.cnc.2023.08.001] [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] [Indexed: 02/08/2024]
Abstract
Near-infrared spectroscopy (NIRS) is a novel technology that uses infrared light to noninvasively and continuously measure regional oxygen extraction in real time at the bedside. Neonatal research using this device supports its use as an adjunct to routine cardiovascular monitoring because NIRS serves as a surrogate marker for end-organ perfusion and can detect minute changes in cerebral, intestinal, and kidney tissue beds. Multiple conditions affecting premature infants are frequently associated with hypoperfusion; therefore, methods to detect early tissue-specific perfusion alterations may substantially improve the clinician's ability to intervene and prevent further deterioration.
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Affiliation(s)
- Terri Marin
- Department of Nursing Science, Augusta University, College of Nursing, 1120 15th Street, EC-4350, Augusta, GA 30912, USA.
| | - James Moore
- Department of Pediatrics, Division of Neonatology, University of Connecticut School of Medicine, 10 Columbus Boulevard, Hartford, CT 06106, USA
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Ertekin O, Buyuktiryaki M, Isik S, Okur N, Oguz SS. Evaluation of cerebral autoregulation of oxygen by NIRS method during postnatal transition period in term and late preterm newborns without resuscitation requirement. J Trop Pediatr 2024; 70:fmae004. [PMID: 38490241 DOI: 10.1093/tropej/fmae004] [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: 03/17/2024]
Abstract
BACKGROUND Pulse oximetry is commonly used to monitor arterial oxygen saturation and heart rate during the transition period and reference intervals have been determined. However, the effect of the change in arterial oxygen saturation on tissue oxygenation does not seem to be the same. So, a non-invasive method for monitoring cerebral or regional tissue oxygenation will be potentially useful for vulnerable infants. This study aims to evaluate the effectiveness of cerebral autoregulation in the first 10 min after delivery in term and late preterm newborns without resuscitation requirement. METHODS Cerebral tissue oxygen saturation was measured in the first 10 min after birth with near-infrared spectroscopy (NIRS) from the left forehead. Peripheral oxygen saturation was measured with pulse oximetry from the right hand and cerebral fractional tissue oxygen extraction was calculated. RESULTS Nineteen late preterms and 20 term infants were included in the study. There was no statistically significant difference between median cerebral tissue oxygen saturation and cerebral fractional tissue oxygen extraction values of late preterm and term infants (p < 0.001). There was a strong inverse relationship between cerebral tissue oxygen saturation and cerebral fractional tissue oxygen extraction (p < 0.001). CONCLUSIONS In late preterm infants similar to term infants, arterial oxygen saturation and cerebral tissue oxygen saturation increased with time, but inverse reduction of cerebral fractional tissue oxygen extraction showed the presence of an active autoregulation in the brain. This can be interpreted as the ability of the brain to protect itself from hypoxia by regulating oxygen uptake during normal fetal-neonatal transition process. A larger scale multi-center randomized control trial is now needed to further inform practice.
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Affiliation(s)
- Omer Ertekin
- Neonatology Unit, Health Sciences University, Ankara Bilkent City Hospital, Çankaya, Ankara 06800, Turkey
| | - Mehmet Buyuktiryaki
- Neonatology Unit, Health Sciences University, Ankara Bilkent City Hospital, Çankaya, Ankara 06800, Turkey
| | - Sehribanu Isik
- Neonatology Unit, Health Sciences University, Ankara Bilkent City Hospital, Çankaya, Ankara 06800, Turkey
| | - Nilufer Okur
- Neonatology Unit, Health Sciences University, Ankara Bilkent City Hospital, Çankaya, Ankara 06800, Turkey
| | - Serife Suna Oguz
- Neonatology Unit, Health Sciences University, Ankara Bilkent City Hospital, Çankaya, Ankara 06800, Turkey
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Hu X, Liang H, Li F, Zhang R, Zhu Y, Zhu X, Xu Y. Necrotizing enterocolitis: current understanding of the prevention and management. Pediatr Surg Int 2024; 40:32. [PMID: 38196049 PMCID: PMC10776729 DOI: 10.1007/s00383-023-05619-3] [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] [Accepted: 12/15/2023] [Indexed: 01/11/2024]
Abstract
Necrotizing enterocolitis (NEC) is one of the diseases in neonates, with a high morbidity and mortality rate, especially in preterm infants. This review aimed to briefly introduce the latest epidemiology, susceptibility factors, and clinical diagnosis and presentation of NEC. We also organized new prevention strategies by risk factors according to different pathogeneses and then discussed new treatment methods based on Bell's staging and complications, and the classification of mild to high severity based on clinical and imaging manifestations. Such a generalization will help clinicians and researchers to gain a deeper understanding of the disease and to conduct more targeted classification, grading prevention, and exploration. We focused on prevention and treatment of the early and suspected stages of NEC, including the discovery of novel biomarkers and drugs to control disease progression. At the same time, we discussed its clinical application, future development, and shortcomings.
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Affiliation(s)
- Xiaohan Hu
- Institute of Pediatric, Children's Hospital of Soochow University, 92 Zhong Nan Street, Suzhou City, Jiangsu Province, China
- Department of Neonatology, Children's Hospital of Soochow University, 92 Zhong Nan Street, Suzhou City, Jiangsu Province, China
| | - Hansi Liang
- Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Fang Li
- Department of Human Anatomy and Histology and Embryology, Soochow University, Suzhou, Jiangsu Province, China
| | - Rui Zhang
- Institute of Pediatric, Children's Hospital of Soochow University, 92 Zhong Nan Street, Suzhou City, Jiangsu Province, China
| | - Yanbo Zhu
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Xueping Zhu
- Institute of Pediatric, Children's Hospital of Soochow University, 92 Zhong Nan Street, Suzhou City, Jiangsu Province, China.
- Department of Neonatology, Children's Hospital of Soochow University, 92 Zhong Nan Street, Suzhou City, Jiangsu Province, China.
| | - Yunyun Xu
- Institute of Pediatric, Children's Hospital of Soochow University, 92 Zhong Nan Street, Suzhou City, Jiangsu Province, China.
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Marin T, Ghosh S, Cockfield C, Mundy C, Mansuri A, Stansfield BK. Routine Diaper Change Alters Kidney Oxygenation in Premature Infants: A Non-A Priori Analysis. Adv Neonatal Care 2023; 23:450-456. [PMID: 37253178 DOI: 10.1097/anc.0000000000001082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND Reduction in oxygen delivery to developing kidneys of premature infants may be an important source for acute kidney injury in premature infants. PURPOSE To describe changes in continuous kidney oxygenation (RrSO 2 ) measures before, during, and after routine diaper changes. METHODS Non-a priori analysis of a prospective cohort that received continuous measurement of RrSO 2 with near-infrared spectroscopy (NIRS) over the first 14 days of life demonstrating acute RrSO 2 drops surrounding diaper changes. RESULTS In total, 26 of 38 (68%) infants (≤1800 g) from our cohort exhibited acute drops in RrSO 2 that temporally correlated with diaper changes. Mean (SD) RrSO 2 baseline prior to each diaper change event was 71.1 (13.2), dropped to 59.3 (11.6) during diaper change, and recovered to 73.3 (13.2). There was a significant difference between means when comparing baseline to diaper change ( P < .001; 95% CI, 9.9 to 13.8) and diaper change to recovery ( P < .001; 95% CI, -16.9 to -11.2). The mean decrease in RrSO 2 during diaper change averaged 12 points (17%) below 15-minute RrSO 2 mean prior to diaper change, with quick recovery to prediaper change levels. No decreases in SpO 2 , blood pressure, or heart rate were documented during the intermittent kidney hypoxic events. IMPLICATIONS FOR PRACTICE AND RESEARCH Routine diaper changes in preterm infants may increase the risk for acute reductions in RrSO 2 as measured by NIRS; however, the impact on kidney health remains unknown. Larger prospective cohort studies assessing kidney function and outcomes related to this phenomenon are needed.
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Affiliation(s)
- Terri Marin
- Department of Nursing Science, College of Nursing (Dr Marin), Department of Biostatistics (Dr Ghosh), Division of Neonatology, Department of Pediatrics (Drs Cockfield, Mundy, and Stansfield), and Department of Pediatric Nephrology (Dr Mansuri), Medical College of Georgia, and Vascular Biology Center (Dr Stansfield), Augusta University, Augusta, Georgia
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Palleri E, van der Heide M, Hulscher JBF, Bartocci M, Wester T, Kooi EMW. Clinical usefulness of splanchnic oxygenation in predicting necrotizing enterocolitis in extremely preterm infants: a cohort study. BMC Pediatr 2023; 23:336. [PMID: 37393233 PMCID: PMC10314466 DOI: 10.1186/s12887-023-04145-4] [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: 02/27/2023] [Accepted: 06/21/2023] [Indexed: 07/03/2023] Open
Abstract
BACKGROUND Impaired intestinal microcirculation seems to play an important role in the pathogenesis of necrotizing enterocolitis (NEC). A previous study showed that a SrSO2 < 30% is associated with an increased risk of developing of NEC. We aimed to determine the clinical usefulness of the cut off < 30% for SrSO2 in predicting NEC in extremely preterm neonates. METHODS This is a combined cohort observational study. We added a second cohort from another university hospital to the previous cohort of extremely preterm infants. SrSO2 was measured for 1-2 h at days 2-6 after birth. To determine clinical usefulness we assessed sensitivity, specificity, positive and negative predictive values for mean SrSO2 < 30. Odds ratio to develop NEC was assessed with generalized linear model analysis, adjusting for center. RESULTS We included 86 extremely preterm infants, median gestational age 26.3 weeks (range 23.0-27.9). Seventeen infants developed NEC. A mean SrSO2 < 30% was found in 70.5% of infants who developed NEC compared to 33.3% of those who did not (p = 0.01). Positive and negative predictive values were 0.33 CI (0.24-0.44) and 0.90 CI (0.83-0.96), respectively. The odds of developing NEC were 4.5 (95% CI 1.4-14.3) times higher in infants with SrSO2 < 30% compared to those with SrSO2 ≥ 30%. CONCLUSIONS A mean SrSO2 cut off ≥ 30% in extremely preterm infants between days 2-6 after birth may be useful in identifying infants who will not develop NEC.
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Affiliation(s)
- E Palleri
- Department of Neonatology, Karolinska University Hospital, Stockholm, Sweden.
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.
| | - M van der Heide
- Division of Neonatology, University of Groningen, University Medical Center Groningen, Beatrix Children's Hospital, Groningen, The Netherlands
| | - J B F Hulscher
- Department of Surgery, Division of Pediatric Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - M Bartocci
- Department of Neonatology, Karolinska University Hospital, Stockholm, Sweden
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - T Wester
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Department of Pediatric Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - E M W Kooi
- Division of Neonatology, University of Groningen, University Medical Center Groningen, Beatrix Children's Hospital, Groningen, The Netherlands
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Variane GFT, Pietrobom RFR, Noh CY, Van Meurs KP, Chock VY. Newer indications for neuromonitoring in critically ill neonates. Front Pediatr 2023; 11:1111347. [PMID: 37187586 PMCID: PMC10175818 DOI: 10.3389/fped.2023.1111347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 04/07/2023] [Indexed: 05/17/2023] Open
Abstract
Continuous neuromonitoring in the neonatal intensive care unit allows for bedside assessment of brain oxygenation and perfusion as well as cerebral function and seizure identification. Near-infrared spectroscopy (NIRS) reflects the balance between oxygen delivery and consumption, and use of multisite monitoring of regional oxygenation provides organ-specific assessment of perfusion. With understanding of the underlying principles of NIRS as well as the physiologic factors which impact oxygenation and perfusion of the brain, kidneys and bowel, changes in neonatal physiology can be more easily recognized by bedside providers, allowing for appropriate, targeted interventions. Amplitude-integrated electroencephalography (aEEG) allows continuous bedside evaluation of cerebral background activity patterns indicative of the level of cerebral function as well as identification of seizure activity. Normal background patterns are reassuring while abnormal background patterns indicate abnormal brain function. Combining brain monitoring information together with continuous vital sign monitoring (blood pressure, pulse oximetry, heart rate and temperature) at the bedside may be described as multi-modality monitoring and facilitates understanding of physiology. We describe 10 cases in critically ill neonates that demonstrate how comprehensive multimodal monitoring provided greater recognition of the hemodynamic status and its impact on cerebral oxygenation and cerebral function thereby informing treatment decisions. We anticipate that there are numerous other uses of NIRS as well as NIRS in conjunction with aEEG which are yet to be reported.
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Affiliation(s)
- Gabriel F. T. Variane
- Division of Neonatology, Department of Pediatrics, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
- Clinical Research Department, Protecting Brains and Saving Futures Organization, São Paulo, Brazil
- Correspondence: Gabriel Variane
| | - Rafaela F. R. Pietrobom
- Division of Neonatology, Department of Pediatrics, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, Brazil
- Clinical Research Department, Protecting Brains and Saving Futures Organization, São Paulo, Brazil
| | - Caroline Y. Noh
- Division of Neonatal and Developmental Medicine, Stanford University School of Medicine and Packard Children's Hospital Stanford, Palo Alto, CA, United States
| | - Krisa P. Van Meurs
- Division of Neonatal and Developmental Medicine, Stanford University School of Medicine and Packard Children's Hospital Stanford, Palo Alto, CA, United States
| | - Valerie Y. Chock
- Division of Neonatal and Developmental Medicine, Stanford University School of Medicine and Packard Children's Hospital Stanford, Palo Alto, CA, United States
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Balegar V KK, Jayawardhana M, de Chazal P, Nanan RKH. Cerebral and splanchnic near-infrared spectroscopic dataset in premature newborns receiving packed red blood cell transfusion. Data Brief 2022; 46:108824. [PMID: 36593770 PMCID: PMC9803924 DOI: 10.1016/j.dib.2022.108824] [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: 10/13/2022] [Revised: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
This article presents the near-infrared spectroscopy (NIRS) dataset of cerebral (StO2c) and splanchnic (StO2s) oxygenation in 29 stable premature infants admitted to a tertiary neonatal intensive care unit who received elective packed red blood cell transfusion (PRBCT) to treat anemia of prematurity. StO2c and StO2s data were prospectively recorded continuously from at least 4 hours before the beginning of PRBCT until 24 hours after its completion, using a 4-wavelength near-infrared spectroscopy (NIRS) monitor (FORE-SIGHT® absolute cerebral oximeter, CASMED, Branford, Connecticut, 06405 USA). StO2 data were downloaded as an analog output at a sampling rate of 1000Hz and aligned along the time axis in LabChart reader format (.adicht files) using a PowerLab data acquisition system [1] (PowerLab®, ADInstruments, Sydney, Australia). The .adicht files were then converted into .mat file format using a Python script (PythonTM version 3.7.3 [2]) and resampled at 1Hz for faster processing. Data that could not be physiologically explained (e.g., the absence of variability, [3] a 30% step change in StO2 between two subsequent data points for StO2[4]), as well as the data during the period of 'cares' were presumed to be artefactual and were replaced with 'NaN' or 'Not a Number' which is recognised by Matlab [5] (MATLAB 9.3, The MathWorks, Inc., Massachusetts, United States) and ignored for all subsequent processing while maintaining the correct time point of the StO2 signals. The data were then exported into Microsoft Excel format. The splanchnic cerebral oxygenation ratio (SCOR) was calculated as the ratio of StO2s/StO2c. A 4-hour mean pre-transfusion values (StO2s 0, StO2c 0, SCOR 0) and post-transfusion hourly mean values (1-28) were determined. Secondary data were derived from a Mixed Models for Repeated Measures (MMRM) analysis with the time point fitted as a fixed effect and the infant fitted as a random effect. The MMRM was used to perform paired comparisons between pre-transfusion and each of the post-baseline values. This article only provides the NIRS data. The secondary data and demography can be found in the article "Splanchnic-Cerebral Oxygenation Ratio associated with Packed Red Blood Cell Transfusion in preterm infants", published in Transfusion Medicine. [6] The data will be of use to researchers in neonatology, transfusion medicine, and physiology to understand changes in cerebral and splanchnic oxygenation associated with PRBCT. Data collection, processing, and analysis can be remodelled in larger multicentric randomised controlled studies to evaluate the effect of transfusion and feeding on transfusion-associated necrotising enterocolitis. The data are also helpful to explore the autoregulatory behaviour of the brain and gut when the oxygen content of blood is increased by administering PRBCT.
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Affiliation(s)
- Kiran Kumar Balegar V
- Department of Neonatology, Nepean Hospital, Sydney Medical School Nepean, The University of Sydney, NSW, Australia,Corresponding author. @kiranku98020067
| | - Madhuka Jayawardhana
- School of Electrical Engineering and the Charles Perkins Center, The University of Sydney, Australia
| | - Philip de Chazal
- School of Biomedical Engineering and the Charles Perkins Center, The University of Sydney, Australia
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Abdominal Near Infrared Spectroscopy can be reliably used to measure splanchnic oxygenation changes in preterm infants. J Perinatol 2022:10.1038/s41372-022-01576-2. [PMID: 36496514 DOI: 10.1038/s41372-022-01576-2] [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: 08/17/2022] [Revised: 11/06/2022] [Accepted: 11/29/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Near-infrared spectroscopy (NIRS) allows assessment of regional tissue oxygen delivery and extraction. There are doubts regarding reliability of gut NIRS measurements. This study assesses reliability of NIRS for monitoring gut oxygenation. STUDY DESIGN Splanchnic tissue haemoglobin index (sTHI), tissue oxygenation index (sTOI) and fractional tissue oxygen extraction (sFTOE) changes during blood transfusion were measured using NIRS and compared to stable control infants. Infants were grouped into 3 chronological age groups: 1-7, 8-28 and ≥29 days of life. RESULTS sTHI, sTOI significantly increased, and sFTOE reduced following blood transfusion in all age group infants (n = 59), with no changes seen in control infants (n = 12). Baseline characteristics including gestational age and feed volumes did not differ between groups. CONCLUSION Gut perfusion measured by NIRS improved in infants who received blood transfusion, a change not seen in the control group, thus suggesting NIRS is a reliable method to measure splanchnic tissue oxygenation.
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13
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Bailey SM, Prakash SS, Verma S, Desai P, Kazmi S, Mally PV. Near-infrared spectroscopy in the medical management of infants. Curr Probl Pediatr Adolesc Health Care 2022; 52:101291. [PMID: 36404215 DOI: 10.1016/j.cppeds.2022.101291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Near-infrared spectroscopy (NIRS) is a technology that is easy to use and can provide helpful information about organ oxygenation and perfusion by measuring regional tissue oxygen saturation (rSO2) with near-infrared light. The sensors can be placed in different anatomical locations to monitor rSO2 levels in several organs. While NIRS is not without limitations, this equipment is now becoming increasingly integrated into modern healthcare practice with the goal of achieving better outcomes for patients. It can be particularly applicable in the monitoring of pediatric patients because of their size, and especially so in infant patients. Infants are ideal for NIRS monitoring as nearly all of their vital organs lie near the skin surface which near-infrared light penetrates through. In addition, infants are a difficult population to evaluate with traditional invasive monitoring techniques that normally rely on the use of larger catheters and maintaining vascular access. Pediatric clinicians can observe rSO2 values in order to gain insight about tissue perfusion, oxygenation, and the metabolic status of their patients. In this way, NIRS can be used in a non-invasive manner to either continuously or periodically check rSO2. Because of these attributes and capabilities, NIRS can be used in various pediatric inpatient settings and on a variety of patients who require monitoring. The primary objective of this review is to provide pediatric clinicians with a general understanding of how NIRS works, to discuss how it currently is being studied and employed, and how NIRS could be increasingly used in the near future, all with a focus on infant management.
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Affiliation(s)
- Sean M Bailey
- Division of Neonatology, Department of Pediatrics, New York University Grossman School of Medicine, New York, NY 10016.
| | - Shrawani Soorneela Prakash
- Division of Neonatology, Department of Pediatrics, NYCHHC/Lincoln Medical and Mental Health Center, Bronx, NY 10451
| | - Sourabh Verma
- Division of Neonatology, Department of Pediatrics, New York University Grossman School of Medicine, New York, NY 10016
| | - Purnahamsi Desai
- Division of Neonatology, Department of Pediatrics, New York University Grossman School of Medicine, New York, NY 10016
| | - Sadaf Kazmi
- Division of Neonatology, Department of Pediatrics, New York University Grossman School of Medicine, New York, NY 10016
| | - Pradeep V Mally
- Division of Neonatology, Department of Pediatrics, New York University Grossman School of Medicine, New York, NY 10016
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Kiran Kumar Balegar V, Jayawardhana M, de Chazal P, Nanan RKH. Splanchnic-cerebral oxygenation ratio associated with packed red blood cell transfusion in preterm infants. Transfus Med 2022; 32:475-483. [PMID: 36222235 DOI: 10.1111/tme.12919] [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: 02/21/2022] [Revised: 08/29/2022] [Accepted: 09/11/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Splanchnic-cerebral oxygenation ratio (SCOR), the ratio of splanchnic tissue oxygen (StO2 s) to simultaneously measured cerebral tissue oxygen (StO2 c), has been described as a surrogate to detect impaired splanchnic oxygenation associated with hypoperfusion status such as necrotizing enterocolitis. This concept is based on the presumption that any change in SCOR indicates a corresponding change in splanchnic tissue oxygenation as the numerator, whereas cerebral tissue oxygenation as the denominator remains stable. However, it is questionable to utilise this concept to detect splanchnic oxygenation changes in the context of packed red blood cell transfusion (PRBCT). AIM The current study examines the contribution of both cerebral and splanchnic oxygenation components to PRBCT-associated SCOR changes in preterm infants. DESIGN Prospective cohort study. SETTING Neonatal intensive care. PATIENTS Hemodynamically stable infants: Gestation <32 weeks; birth weight <1500 g; postmenstrual age <37 weeks: tolerating ≥120 ml/kg/day feed volume. INTERVENTIONS PRBCT at 15 ml/kg, over 4 h. MAIN OUTCOME MEASURES Transfusion-associated changes were determined by performing mixed models for repeated measures analysis between the 4-h mean pre-transfusion values (SCOR 0, StO2 s 0, and StO2 c 0) and the post-transfusion hourly mean values for the next 28 h (SCOR 1-28, StO2 s 1-28, and StO2 c 1-28). Dunnett's method was used to adjust for the multiplicity of the p value. RESULTS Of 30 enrolled infants 14 [46.7%] male; median [IQR] birth weight, 923 [655-1064] g; gestation, 26.4 [25.5-28.1] weeks; enrolment weight, 1549 [1113-1882] g; and postmenstrual age, 33.6 [32.4-35.0] weeks, one infant was excluded because of corrupted NIRS data. With the commencement of PRBCT, SCOR demonstrated a downward trend throughout the study period. This drift was associated with an increasing StO2 c trend, while StO2 s remained unchanged throughout the study period. CONCLUSIONS AND RELEVANCE PRBCT-associated SCOR decrease suggests improvement in cerebral oxygenation rather than worsening splanchnic oxygenation. Our study underlines that it is necessary to determine individual components of SCOR, namely cerebral and splanchnic StO2 to understand SCOR changes in the context of PRBCT.
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Affiliation(s)
- V Kiran Kumar Balegar
- Department of Neonatology, Nepean Hospital, Sydney Medical School Nepean, The University of Sydney, Sydney, Australia
| | - Madhuka Jayawardhana
- School of Electrical Engineering, Charles Perkins Center, The University of Sydney, Sydney, Australia
| | - Philip de Chazal
- School of Biomedical Engineering, Charles Perkins Center, The University of Sydney, Sydney, Australia
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15
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Chock VY, Smith E, Tan S, Ball MB, Das A, Hintz SR, Kirpalani H, Bell EF, Chalak LF, Carlo WA, Cotten CM, Widness JA, Kennedy KA, Ohls RK, Seabrook RB, Patel RM, Laptook AR, Mancini T, Sokol GM, Walsh MC, Yoder BA, Poindexter BB, Chawla S, D’Angio CT, Higgins RD, Van Meurs KP. Early brain and abdominal oxygenation in extremely low birth weight infants. Pediatr Res 2022; 92:1034-1041. [PMID: 35513716 PMCID: PMC9588487 DOI: 10.1038/s41390-022-02082-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 02/24/2022] [Accepted: 04/10/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Extremely low birth weight (ELBW) infants are at risk for end-organ hypoxia and ischemia. Regional tissue oxygenation of the brain and gut as monitored with near-infrared spectroscopy (NIRS) may change with postnatal age, but normal ranges are not well defined. METHODS A prospective study of ELBW preterm infants utilized NIRS monitoring to assess changes in cerebral and mesenteric saturation (Csat and Msat) over the first week after birth. This secondary study of a multicenter trial comparing hemoglobin transfusion thresholds assessed cerebral and mesenteric fractional tissue oxygen extraction (cFTOE and mFTOE) and relationships with perinatal variables. RESULTS In 124 infants, both Csat and Msat declined over the first week, with a corresponding increase in oxygen extraction. With lower gestational age, lower birth weight, and 5-min Apgar score ≤5, there was a greater increase in oxygen extraction in the brain compared to the gut. Infants managed with a lower hemoglobin transfusion threshold receiving ≥2 transfusions in the first week had the lowest Csat and highest cFTOE (p < 0.001). CONCLUSION Brain oxygen extraction preferentially increased in more immature and anemic preterm infants. NIRS monitoring may enhance understanding of cerebral and mesenteric oxygenation patterns and inform future protective strategies in the preterm ELBW population. IMPACT Simultaneous monitoring of cerebral and mesenteric tissue saturation demonstrates the balance of oxygenation between preterm brain and gut and may inform protective strategies. Over the first week, oxygen saturation of the brain and gut declines as oxygen extraction increases. A low hemoglobin transfusion threshold is associated with lower cerebral saturation and higher cerebral oxygen extraction compared to a high hemoglobin transfusion threshold, although this did not translate into clinically relevant differences in the TOP trial primary outcome. Greater oxygen extraction by the brain compared to the gut occurs with lower gestational age, lower birth weight, and 5-min Apgar score ≤5.
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Affiliation(s)
- Valerie Y. Chock
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine and Lucile Packard Children’s Hospital, Palo Alto, CA,Corresponding author: Valerie Y. Chock, MD, MS Epi, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, 453 Quarry Road, Palo Alto, CA. 94304 USA, (650) 723-5711,
| | - Emily Smith
- Social, Statistical and Environmental Sciences Unit, RTI International, Research Triangle Park, NC
| | - Sylvia Tan
- Social, Statistical and Environmental Sciences Unit, RTI International, Research Triangle Park, NC
| | - M. Bethany Ball
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine and Lucile Packard Children’s Hospital, Palo Alto, CA
| | - Abhik Das
- Social, Statistical and Environmental Sciences Unit, RTI International, Rockville, MD
| | - Susan R. Hintz
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine and Lucile Packard Children’s Hospital, Palo Alto, CA
| | - Haresh Kirpalani
- Department of Pediatrics, University of Pennsylvania, Philadelphia, PA
| | - Edward F. Bell
- Department of Pediatrics, University of Iowa, Iowa City, IA
| | - Lina F. Chalak
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX
| | - Waldemar A. Carlo
- Division of Neonatology, University of Alabama at Birmingham, Birmingham, AL
| | | | | | - Kathleen A. Kennedy
- Department of Pediatrics, McGovern Medical School at The University of Texas Health Science Center at Houston, Houston, TX
| | - Robin K. Ohls
- University of New Mexico Health Sciences Center, Albuquerque, NM,Department of Pediatrics, Division of Neonatology, University of Utah School of Medicine, Salt Lake City, UT
| | - Ruth B. Seabrook
- Department of Pediatrics, Nationwide Children’s Hospital, The Ohio State University College of Medicine, Columbus, OH
| | - Ravi M. Patel
- Emory University School of Medicine, Department of Pediatrics, Children’s Healthcare of Atlanta, Atlanta, GA
| | - Abbot R. Laptook
- Department of Pediatrics, Women & Infants Hospital, Brown University, Providence, RI
| | - Toni Mancini
- Department of Pediatrics, University of Pennsylvania, Philadelphia, PA
| | - Gregory M. Sokol
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
| | - Michele C. Walsh
- Department of Pediatrics, Rainbow Babies & Children’s Hospital, Case Western Reserve University, Cleveland, OH
| | - Bradley A. Yoder
- Department of Pediatrics, Division of Neonatology, University of Utah School of Medicine, Salt Lake City, UT
| | - Brenda B. Poindexter
- Emory University School of Medicine, Department of Pediatrics, Children’s Healthcare of Atlanta, Atlanta, GA
| | - Sanjay Chawla
- Department of Pediatrics, Wayne State University, Detroit, MI
| | - Carl T. D’Angio
- University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - Rosemary D. Higgins
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD,College of Health and Human Services, George Mason University, Fairfax, VA
| | - Krisa P. Van Meurs
- Department of Pediatrics, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine and Lucile Packard Children’s Hospital, Palo Alto, CA
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16
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Wu S, Di S, Liu T, Shi Y. Emerging prediction methods for early diagnosis of necrotizing enterocolitis. Front Med (Lausanne) 2022; 9:985219. [PMID: 36186788 PMCID: PMC9523100 DOI: 10.3389/fmed.2022.985219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 08/31/2022] [Indexed: 11/13/2022] Open
Abstract
Necrotizing enterocolitis (NEC) is a life-threatening disease of the digestive system that occurs in the neonatal period. NEC is difficult to diagnose early and the prognosis is poor. Previous studies have reported that abnormalities can be detected before the presentation of clinical symptoms. Based on an analysis of literature related to the early prediction of NEC, we provide a detailed review on the early prediction and diagnosis methods of NEC, including ultrasound, near-infrared spectroscopy, biomarkers, and intestinal microbiota. This review aimed to provide a reference for further research and clinical practice.
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17
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Hu Y, Chen F, Xiang X, Wang F, Hua Z, Wei H. Early versus delayed enteral nutrition for neonatal hypoxic-ischemic encephalopathy undergoing therapeutic hypothermia: a randomized controlled trial. Ital J Pediatr 2022; 48:146. [PMID: 35971138 PMCID: PMC9380332 DOI: 10.1186/s13052-022-01342-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 08/09/2022] [Indexed: 11/10/2022] Open
Abstract
Background The practice of therapeutic hypothermia (TH) is widely used for neonatal hypoxic-ischemic encephalopathy (HIE) despite its corresponding feeding strategies are still controversial. This randomized controlled trial (RCT) demonstrated to evaluate the effect of early vs. delayed enteral nutrition on the incidence of feeding intolerance (FI) and other association during TH. Methods This single center, parallel-group, and no-blinded RCT was processed in a level III, and academic neonatal intensive care unit. Infants who were diagnosed with HIE and undertaken TH from September 2020 to August 2021 were enrolled. Participants were randomized to receive enteral nutrition either during TH/rewarming (early enteral nutrition, EEN) or after TH (delayed enteral nutrition, DEN) according to a recommend enteral feeding protocol. All data were analyzed using SPSS 26.0 software with a p-value< 0.05 was considered statistically significant. Results Ninety-two infants were enrolled after randomization, but 12 (13.04%) cases including 3 (3.26%) deaths were excluded from eventually analyzed, who did not initiate or discontinue the intervention. 80 cases (42 and 38 in the EEN and DEN group, respectively) who completed the interventions were eventually analyzed. Besides initial time of enteral feeds, two groups had processed the same feeding method. Total 23 (25.0%) cases developed FI, and no difference of morbidity was found between two groups (23.4% vs 26.7%, p = 0.595; Log Rank, p = 0.803). There was no case died or developed late-onset bloodstream and no difference of the incidence of hypoglycemia or weight gain was found (p > 0.05). The percentage of infants who had not reaching the goal of full enteral feeding volume between the two groups was similar (21.43% vs 23.68%, p = 0.809). The average time of parenteral nutrition, reaching full enteral feeds and hospital stay were shorter in the EEN group compared with the DEN group with significant differences (8.81 ± 1.67 vs 10.61 ± 2.06 days, p < 0.001; 9.91 ± 1.88 vs 12.24 ± 2.50 days, p < 0.001; 12.55 ± 4.57 vs 16.47 ± 5.27 days, p = 0.001 respectively). Conclusions Compared with delayed enteral nutrition, introduction of early enteral nutrition according to a recommend feeding strategy for neonatal HIE undergoing TH may be feasible and safe.FI is frequent in this high-risk group of infants which should not be ignored during feeding process. Trial registration The Chinese Clinical Trial Registry,ChiCTR2000038193, 2020-9-13, https://www.chictr.org.cn.
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Affiliation(s)
- Ya Hu
- Department of Neonatology, Children's Hospital of Chongqing Medical University (The institution is also validated by Ringgold as 'Chongqing Medical University Affiliated Children's Hospital'), Chongqing, China.,Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China.,National Clinical Research Center for Child Health and Disorders, Chongqing, China.,China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Feng Chen
- Department of Neonatology, Children's Hospital of Chongqing Medical University (The institution is also validated by Ringgold as 'Chongqing Medical University Affiliated Children's Hospital'), Chongqing, China.,Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China.,National Clinical Research Center for Child Health and Disorders, Chongqing, China
| | - Xinyu Xiang
- Department of Neonatology, Children's Hospital of Chongqing Medical University (The institution is also validated by Ringgold as 'Chongqing Medical University Affiliated Children's Hospital'), Chongqing, China
| | - Fang Wang
- Department of Neonatology, Children's Hospital of Chongqing Medical University (The institution is also validated by Ringgold as 'Chongqing Medical University Affiliated Children's Hospital'), Chongqing, China
| | - Ziyu Hua
- Department of Neonatology, Children's Hospital of Chongqing Medical University (The institution is also validated by Ringgold as 'Chongqing Medical University Affiliated Children's Hospital'), Chongqing, China.,Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China.,National Clinical Research Center for Child Health and Disorders, Chongqing, China.,China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Hong Wei
- Department of Neonatology, Children's Hospital of Chongqing Medical University (The institution is also validated by Ringgold as 'Chongqing Medical University Affiliated Children's Hospital'), Chongqing, China. .,Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China. .,National Clinical Research Center for Child Health and Disorders, Chongqing, China. .,China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing, China.
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18
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Splanchnic oxygen saturation during reoxygenation with 21% or 100% O 2 in newborn piglets. Pediatr Res 2022; 92:445-452. [PMID: 34725499 DOI: 10.1038/s41390-021-01819-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/29/2021] [Accepted: 10/06/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Increasing evidence recognizes the harm of excess oxygen to lungs, eyes, and brain of preterm infants, but not yet to the intestine. We assessed changes in splanchnic oxygenation during reoxygenation with 21% compared to 100% O2 in a newborn piglet model of perinatal asphyxia. METHODS We randomized 25 piglets to control or intervention. Intervention groups underwent global hypoxia until acidosis and hypotension occurred. Piglets were reoxygenated for 30 min with 21% or 100% O2 and observed for 9 h. We continuously measured regional splanchnic oxygen saturation (rsSO2) using near-infrared spectroscopy (NIRS). We calculated mean rsSO2 and rsCoVar (as SD/mean). We measured PaO2 and SaO2, sampled from the right carotid artery. RESULTS Reoxygenation after global hypoxia restored rsSO2. Reoxygenation with 100% O2 increased rsSO2 to values significantly higher than baseline. In intervention groups, rsCoVar decreased during observation compared to baseline. We found a correlation between rsSO2 and PaO2 (r = 0.420, P < 0.001) and between rsSO2 and SaO2 (r = 0.648, P < 0.001) in pooled data from the entire experiment. CONCLUSION Reoxygenation after global hypoxia improves splanchnic oxygenation, but is associated with reduced variability of rsSO2. Reoxygenation with 100% O2 exposes the intestine to hyperoxia. Splanchnic NIRS is able to detect intestinal hypoxia and hyperoxia. IMPACT Splanchnic oxygenation improves during reoxygenation after global hypoxia, though reoxygenation with 100% O2 exposes the intestine to hyperoxia. Decreased variability of splanchnic oxygenation several hours after hypoxia and reoxygenation seems to be independent of the resuscitation strategy, and may indicate intestinal injury. Splanchnic NIRS monitoring was able to detect intestinal hypoxia and exposure to hyperoxia, as evidenced by a strong correlation between splanchnic oxygenation and arterial oxygen content.
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19
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Balegar V. KK, Jayawardhana M, Martin AJ, de Chazal P, Nanan RKH. Hierarchical improvement of regional tissue oxygenation after packed red blood cell transfusion. PLoS One 2022; 17:e0271563. [PMID: 35857790 PMCID: PMC9299358 DOI: 10.1371/journal.pone.0271563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 07/01/2022] [Indexed: 11/18/2022] Open
Abstract
Background It is well established that counter-regulation to hypoxia follows a hierarchical pattern, with brain-sparing in preference to peripheral tissues. In contrast, it is unknown if the same hierarchical sequence applies to recovery from hypoxia after correction of anemia with packed red blood cell transfusion (PRBCT). Objective To understand the chronology of cerebral and splanchnic tissue oxygenation resulting after correction of anemia by PRBCT in preterm infants using near-infrared spectroscopy (NIRS). Design Prospective cohort study. Setting Neonatal intensive care. Patients included Haemodynamically stable infants: <32 weeks gestation, <37weeks postmenstrual age, <1500 grams birth weight; and ≥120 mL/kg/day feeds tolerated. Intervention PRBCT at 15 mL/Kg over 4 hours. Main outcome measures Transfusion-associated changes were determined by comparing the 4-hour mean pre-transfusion cerebral and splanchnic fractional tissue oxygen extraction (FTOEc0; FTOEs0) with hourly means during (FTOEc1-4; FTOEs1-4) and for 24 hours after PRBCT completion (FTOEc5-28; FTOEs5-28). Results Of 30 enrolled infants, 14[46.7%] male; median[IQR] birth weight, 923[655–1064]g; gestation, 26.4[25.5–28.1]weeks; enrolment weight, 1549[1113–1882]g; and postmenstrual age, 33.6[32.4–35]weeks, 1 infant was excluded because of corrupted NIRS data. FTOEc significantly decreased during and for 24 hours after PRBCT (p < 0.001), indicating prompt improvement in cerebral oxygenation. In contrast, FTOEs showed no significant changes during and after PRBCT (p>0.05), indicating failure of improvement in splanchnic oxygenation. Conclusion Improvement in regional oxygenation after PRBCT follows the same hierarchical pattern with a prompt improvement of cerebral but not splanchnic tissue oxygenation. We hypothesise that this hierarchical recovery may indicate continued splanchnic hypoxia in the immediate post-transfusion period and vulnerability to transfusion-associated necrotizing enterocolitis (TANEC). Our study provides a possible mechanistic underpinning for TANEC and warrants future randomised controlled studies to stratify its prevention.
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Affiliation(s)
- Kiran Kumar Balegar V.
- Department of Neonatology, Nepean Hospital, Sydney Medical School Nepean, The University of Sydney, Sydney, NSW, Australia
- * E-mail:
| | - Madhuka Jayawardhana
- School of Electrical Engineering and the Charles Perkins Center, The University of Sydney, Sydney, NSW, Australia
| | - Andrew J. Martin
- NHMRC Clinical Trials Centre, University of Sydney, Sydney, NSW, Australia
| | - Philip de Chazal
- School of Biomedical Engineering and the Charles Perkins Center, The University of Sydney, Sydney, NSW, Australia
| | - Ralph Kay Heinrich Nanan
- Sydney Medical School and Charles Perkins Center Nepean, The University of Sydney, Sydney, NSW, Australia
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20
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Sirota GL, Litmanovitz I, Vider C, Arnon S, Moore SS, Grinblatt E, Levkovitz O, Bauer Rusek S. Regional Splanchnic Oxygenation during Continuous versus Bolus Feeding among Stable Preterm Infants. CHILDREN 2022; 9:children9050691. [PMID: 35626866 PMCID: PMC9139727 DOI: 10.3390/children9050691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/24/2022] [Accepted: 05/03/2022] [Indexed: 11/16/2022]
Abstract
Introduction: There is no agreement regarding the best method for tube-feeding preterm infants. Few studies, to date, have evaluated the influence of different methods of enteral feeding on intestinal oxygenation. The use of near-infrared spectroscopy (NIRS) has permitted the noninvasive measurement of splanchnic regional oxygenation (rSO2S) in different clinical conditions. The aim of this prospective, single-center study was to compare rSO2S during continuous versus bolus feeding among stable preterm infants. Methods: Twenty-one preterm infants, less than 32 weeks gestation and appropriate for gestational age, were enrolled. All infants were clinically stable and on full tube feedings. Each infant received a bolus feeding initially (20 min duration), and after 3 h, a continuous feeding (5 h duration). Infants were evaluated 30 min before and 30 min after the bolus and continuous feedings. The regional splanchnic saturation (rSO2S) was measured using near-infrared spectroscopy (NIRS) technology and systemic saturation was measured with pulse oximetry. From these measurements, we calculated the splanchnic fractional oxygen extraction ratio (FOES) for each of the four intervals. Results: rSO2S decreased after continuous vs. bolus feeding (p = 0.025), while there was a trend toward decreased SaO2 after bolus feeding (p = 0.055). The FOES, which reflects intestinal oxygen extraction, was not affected by the feeding mode (p = 0.129). Discussion/Conclusion: Continuous vs. bolus feeding decreases rSO2S but does not affect oxygen extraction by intestinal tissue; after bolus feeding there was a trend towards decreased systemic saturation.
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Affiliation(s)
- Gisela Laura Sirota
- Department of Neonatology, Meir Medical Center, Kfar-Saba 4428164, Israel; (I.L.); (S.A.); (S.S.M.); (E.G.); (O.L.); (S.B.R.)
- Correspondence: ; Tel.: +972-50-538-2266
| | - Ita Litmanovitz
- Department of Neonatology, Meir Medical Center, Kfar-Saba 4428164, Israel; (I.L.); (S.A.); (S.S.M.); (E.G.); (O.L.); (S.B.R.)
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Carmel Vider
- Department of Pediatrics, Meir Medical Center, Kfar-Saba 4428164, Israel;
| | - Shmuel Arnon
- Department of Neonatology, Meir Medical Center, Kfar-Saba 4428164, Israel; (I.L.); (S.A.); (S.S.M.); (E.G.); (O.L.); (S.B.R.)
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Shiran Sara Moore
- Department of Neonatology, Meir Medical Center, Kfar-Saba 4428164, Israel; (I.L.); (S.A.); (S.S.M.); (E.G.); (O.L.); (S.B.R.)
| | - Eynit Grinblatt
- Department of Neonatology, Meir Medical Center, Kfar-Saba 4428164, Israel; (I.L.); (S.A.); (S.S.M.); (E.G.); (O.L.); (S.B.R.)
| | - Orly Levkovitz
- Department of Neonatology, Meir Medical Center, Kfar-Saba 4428164, Israel; (I.L.); (S.A.); (S.S.M.); (E.G.); (O.L.); (S.B.R.)
| | - Sofia Bauer Rusek
- Department of Neonatology, Meir Medical Center, Kfar-Saba 4428164, Israel; (I.L.); (S.A.); (S.S.M.); (E.G.); (O.L.); (S.B.R.)
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21
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Elsayed Y, Seshia M. A new intestinal ultrasound integrated approach for the management of neonatal gut injury. Eur J Pediatr 2022; 181:1739-1749. [PMID: 34981184 DOI: 10.1007/s00431-021-04353-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/08/2021] [Accepted: 12/16/2021] [Indexed: 11/27/2022]
Abstract
UNLABELLED Clinical management of gut injury has been a challenge to the clinician since the first description of necrotizing enterocolitis (NEC) about 50 years ago, and it is still poorly defined. Most of the diagnostic markers are non-specific, and there is no consensus yet on a reliable gold standard for diagnosis. This report describes our approach to integrating point of care intestinal ultrasound (IUS) as the primary radiological assessment modality with other clinical and biochemical markers. CONCLUSIONS This is the first clinical guideline integrating point of care IUS as a routine assessment of the gut injury. This integrated algorithm improves the quality of care of the gut injury, provides a more accurate diagnosis of NEC, and differentiates other categories of gut injury. WHAT IS KNOWN • Necrotizing enterocolitis is a poorly defined disease, and the routine assessment relying on AXR does not differentiate NEC from other categories of gut injury. WHAT IS NEW • Integrating point of care IUS with the routine clinical assessment of gut injury enables the gut injury to be classified according to the triggering factors and severity; this helps target the appropriate management.
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Affiliation(s)
- Yasser Elsayed
- Section of Neonatology, Department of Pediatrics and Child Health, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada.
| | - Mary Seshia
- Section of Neonatology, Department of Pediatrics and Child Health, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
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22
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Balegar V KK, Low GKK, Nanan RKH. Regional tissue oxygenation and conventional indicators of red blood cell transfusion in anaemic preterm infants. EClinicalMedicine 2022; 46:101365. [PMID: 35399813 PMCID: PMC8987388 DOI: 10.1016/j.eclinm.2022.101365] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/26/2022] [Accepted: 03/08/2022] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND It is unresolved whether low haemoglobin (Hb) and symptoms of anaemia reflect oxygen delivery-consumption imbalances (fractional tissue oxygen extraction [FTOE]). Here, we test whether pre-transfusion Hb and symptoms of anaemia correlate with pre-transfusion cerebral and splanchnic FTOE. METHODS This prospective cohort study was carried out between Sept 1, 2014 and Nov 30, 2016 at Nepean Hospital, Sydney, Australia. The study enroled haemodynamically stable preterm infants: gestation <32 weeks; birth weight <1500 gs; postmenstrual age <37weeks, who received 15 mL/kg packed red blood cell transfusion (PRBCT) based on low Hb and symptoms of anaemia. FTOE was determined using simultaneous monitoring of near-infrared spectroscopy and pulse oximetry for 4 h before PRBCT. FINDINGS The study enroled 29 infants born with a median gestation of 26.4 weeks (IQR 25.4-28.1), birth weight 922 g (655-1064), at postmenstrual age 33.6 weeks (31.7-34.9), and weight 1487 g (1110-1785). There was no significant correlation between Hb (median 97 g/L, IQR 87-100) and cerebral FTOE (r=-0.12, 95% CI -0.47 to 0.27; p = 0.54, n = 29) as well as splanchnic FTOE (r=-0.09, 95% CI -0.45 to 0.29; p = 0.64, n = 29). Median cerebral FTOE (p = 0.67) and splanchnic FTOE (p = 0.53) did not differ between symptomatic and asymptomatic groups. INTERPRETATION Our preliminary findings suggest that pre-transfusion Hb and symptoms of anaemia might not accurately reflect oxygen delivery-consumption imbalances in both the brain and the gut. A lack of correlation with cerebral FTOE might be presumed to be due to the brain-sparing effect. However, the lack of correlation with splanchnic FTOE is more concerning. Hence, these results warrant larger studies incorporating FTOE along with the conventional criteria in the transfusion algorithm. FUNDING The study was funded (for the purchase of NIRS sensors) by the Australian Women and Children's Research Foundation.
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Key Words
- Anaemia
- CPAP, Continuous positive airway pressure
- DO2`, Oxygen delivery
- FTOE, Fractional tissue oxygen extraction
- Fractional tissue oxygen extraction
- HFNC, High Flow Nasal Cannula
- Haemoglobin
- Hb, Haemoglobin
- NEC, Necrotising Enterocolitis
- NIRS, Near Infrared Spectroscopy
- PDA, Patent Ductus Arteriosus
- PRBCT, Packed Red Blood Cell Transfusion
- Packed red blood cell transfusions
- Preterm
- StO2, Tissue oxygen saturation
- VO2, Oxygen consumption
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Affiliation(s)
- Kiran Kumar Balegar V
- Department of Neonatology, Nepean Hospital, Nepean Blue Mountains Local Health District, Derby St, Kingswood, NSW 2750, Australia
- Sydney Medical School Nepean, NSW, Australia
- The University of Sydney, NSW, Australia
- Corresponding author at: Department of Neonatology, Nepean Hospital, Nepean Blue Mountains Local Health District, Derby St 2747, Kingswood, NSW 2750, Australia.
| | - Gary KK Low
- Research Operations, Nepean Hospital, Nepean Blue Mountains Local Health District, Derby St, Kingswood, NSW, 2750, Australia
| | - Ralph KH Nanan
- The University of Sydney, NSW, Australia
- Charles Perkins Center Nepean, NSW, Australia
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23
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Silvera F, Gagliardi T, Vollono P, Fernández C, García-Bayce A, Berardi A, Badía M, Beltrán B, Cabral T, Abella P, Farías L, Vaamonde L, Martell M, Blasina F. Study of the relationship between regional cerebral saturation and pCO2 changes during mechanical ventilation to evaluate modifications in cerebral perfusion in a newborn piglet model. Braz J Med Biol Res 2022; 55:e11543. [PMID: 35239775 PMCID: PMC8905677 DOI: 10.1590/1414-431x2022e11543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Accepted: 01/04/2022] [Indexed: 11/22/2022] Open
Abstract
Near-infrared spectroscopy (NIRS) could be a useful continuous, non-invasive technique for monitoring the effect of partial pressure of carbon dioxide (PaCO2) fluctuations in the cerebral circulation during ventilation. The aim of this study was to examine the efficacy of NIRS to detect acute changes in cerebral blood flow following PaCO2 fluctuations after confirming the autoregulation physiology in piglets. Fourteen piglets (<72 h of life) were studied. Mean arterial blood pressure, oxygen saturation, pH, glycemia, hemoglobin, electrolytes, and temperature were monitored. Eight animals were used to evaluate brain autoregulation, assessing superior cava vein Doppler as a proxy of cerebral blood flow changing mean arterial blood pressure. Another 6 animals were used to assess hypercapnia generated by decreasing ventilatory settings and complementary CO2 through the ventilator circuit and hypocapnia due to increasing ventilatory settings. Cerebral blood flow was determined by jugular vein blood flow by Doppler and continuously monitored with NIRS. A decrease in PaCO2 was observed after hyperventilation (47.6±2.4 to 29.0±4.9 mmHg). An increase in PaCO2 was observed after hypoventilation (48.5±5.5 to 90.4±25.1 mmHg). A decrease in cerebral blood flow after hyperventilation (21.8±10.4 to 15.1±11.0 mL/min) and an increase after hypoventilation (23.4±8.4 to 38.3±10.5 mL/min) were detected by Doppler ultrasound. A significant correlation was found between cerebral oxygenation and Doppler-derived parameters of blood flow and PaCO2. Although cerebral NIRS monitoring is mainly used to detect changes in regional brain oxygenation, modifications in cerebral blood flow following experimental PaCO2 changes were detected in newborn piglets when no other important variables were modified.
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Affiliation(s)
- F Silvera
- Department of Neonatology, Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, and Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - T Gagliardi
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - P Vollono
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - C Fernández
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - A García-Bayce
- Division of Pediatric Imagenology, Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, and Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - A Berardi
- Department of Neonatology, Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, and Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - M Badía
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - B Beltrán
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - T Cabral
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - P Abella
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - L Farías
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - L Vaamonde
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - M Martell
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
| | - F Blasina
- Department of Neonatology, Hospital de Clínicas Dr. Manuel Quintela, Faculty of Medicine, Republic University, Montevideo, Uruguay
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24
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Elia S, Ciarcià M, Miselli F, Bertini G, Dani C. Effect of selective gastric residual monitoring on enteral intake in preterm infants. Ital J Pediatr 2022; 48:30. [PMID: 35177107 PMCID: PMC8851703 DOI: 10.1186/s13052-022-01208-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 01/10/2022] [Indexed: 11/21/2022] Open
Abstract
Objective Prefeed gastric residuals (GRs) monitoring has been correlated with an increased time to reach full feeds and longer parenteral nutrition without beneficial effect on necrotizing enterocolitis (NEC) occurrence. We aimed to assess effects of a new local protocol to provide for the selective evaluation of GRs excluding their routine monitoring. Methods We carried out a retrospective study based on a “before and after” design in a cohort of infants born at 23+0–31+6 weeks of gestation. The primary outcome was the age at full enteral feeding (150 mL/kg/d). Secondary outcomes included age at regaining of birth weight, and evaluation of Z-scores of weight, length, and head circumference at discharge. Results We studied 49 infants in the selective GR group and 59 in the routine GR group. Age at full (150 mL/kg) enteral feeding (17.8 ± 10.1 vs. 22.9 ± 10.5 days, P = 0.017) and regaining of birth weight (11.1 ± 3.0 vs. 12.5 ± 3.5 days, P = 0.039) were lower while the Z-scores of weight at discharge (-1.10 ± 0.83 vs. -1.60 ± 1.45, P = 0.040) were higher in infants in the selective GR group in comparison with infants in the routine GR group. Conclusions Selective monitoring of GRs decreased age at full enteral feeding and at regaining of birth weight and induced better Z-scores of weight at discharge in comparison with routine GR monitoring in a cohort of extremely preterm infants without increasing the incidence of NEC. Omitting prefeed GRs monitoring in clinical practice seems reasonable. Supplementary Information The online version contains supplementary material available at 10.1186/s13052-022-01208-7.
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Affiliation(s)
- Serena Elia
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy
| | - Martina Ciarcià
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy
| | - Francesca Miselli
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy
| | - Giovanna Bertini
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy
| | - Carlo Dani
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy. .,Department of Neurosciences Psychology Drug Research and Child Health, Careggi University Hospital of Florence, Florence, Italy.
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25
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Kalteren WS, Bos AF, Bergman KA, van Oeveren W, Hulscher JBF, Kooi EMW. The short-term effects of RBC transfusions on intestinal injury in preterm infants. Pediatr Res 2022; 93:1307-1313. [PMID: 35115712 PMCID: PMC8813571 DOI: 10.1038/s41390-022-01961-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 01/10/2022] [Accepted: 01/17/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Anemic preterm infants may require red blood cell (RBC) transfusions to maintain sufficient oxygen supply to vital organs. Transfusion treatment, however, may have adverse intestinal effects. We aimed to investigate the short-term effects of RBC transfusions, hypothesizing to find signs of oxidative stress and intestinal injury, possibly related to levels of splanchnic (re-)oxygenation. METHODS We prospectively included preterm infants (gestational age < 32 weeks). We measured urinary biomarkers for oxidative stress (8-isoprostane) and intestinal cell injury (intestinal fatty acid-binding protein, I-FABP) shortly before and after RBC transfusion. Splanchnic oxygen saturation (rsSO2) and rsSO2 variability were assessed simultaneously. RESULTS Twenty-nine preterm infants received 58 RBC transfusions at various postnatal ages. Six of them developed necrotizing enterocolitis (NEC) after transfusion. Urinary 8-isoprostane and I-FABP increased following RBC transfusion (median 282-606 pg/ml and 4732-6968 pg/ml, p < 0.01), more pronounced in infants who developed NEC. Change in I-FABP correlated with change in 8-isoprostane (rho = 0.623, p < 0.01). Lower rsSO2 variability, but not higher mean rsSO2 was associated with higher 8-isoprostane and I-FABP levels after transfusion. CONCLUSIONS Preterm RBC transfusions are associated with concomitant signs of oxidative stress and intestinal injury, parallel with lower variability in splanchnic oxygenation. This may represent the early pathogenetic process of transfusion-associated NEC. IMPACT Red blood cell (RBC) transfusions in preterm infants are associated with a near 2-fold increase in urinary biomarkers for oxidative stress (8-isoprostane) and intestinal cell injury (intestinal fatty acid-binding protein, I-FABP). Magnitude of change in I-FABP strongly correlated with the magnitude of 8-isoprostane change, suggesting a role for oxidative stress in the pathogenesis of intestinal injury. Lower splanchnic oxygen saturation variability following RBC transfusion was associated with higher 8-isoprostane and I-FABP levels. Loss of splanchnic variability after RBC transfusion may result from increased oxidative stress and its concomitant intestinal injury, possibly representing the early pathogenetic process of transfusion-associated necrotizing enterocolitis.
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Affiliation(s)
- Willemien S. Kalteren
- grid.4830.f0000 0004 0407 1981Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Arend F. Bos
- grid.4830.f0000 0004 0407 1981Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Klasien A. Bergman
- grid.4830.f0000 0004 0407 1981Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | | | - Jan B. F. Hulscher
- grid.4494.d0000 0000 9558 4598Division of Pediatric Surgery, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Elisabeth M. W. Kooi
- grid.4830.f0000 0004 0407 1981Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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26
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Howarth CN, Leung TS, Banerjee J, Eaton S, Morris JK, Aladangady N. Regional cerebral and splanchnic tissue oxygen saturation in preterm infants - Longitudinal normative measurements. Early Hum Dev 2022; 165:105540. [PMID: 35065416 DOI: 10.1016/j.earlhumdev.2022.105540] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/08/2022] [Accepted: 01/11/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND To investigate regional splanchnic and cerebral tissue oxygen saturation in preterm infants <30 weeks gestation. METHODS Cerebral (cTOI) and splanchnic (sTOI) Tissue Oxygenation Index were measured weekly in 5 min epochs for a total period of 60 min using NIRS (NIRO-300) for the first 8 weeks of life, in 48 appropriately grown preterm infants born at <30 weeks gestation. Infants who developed HPI and/or NEC (n = 12) and those that died (n = 1) were excluded from our main outcome measure of regional gut and cerebral tissue oxygenation in healthy preterm infants <30 weeks gestation. RESULTS Median birthweight 789 g (460-1486), gestational age 25+6 weeks (23+0-29+1) and 51.4% female. 217 NIRS measurements were completed across the first 8 weeks of life. Mean weekly cTOI ranged from 56.8-65.4% and sTOI ranged from 36.7-46.0%. Mean cTOI was significantly higher than mean sTOI (p < 0.001) throughout the first 8 weeks of life. Mean cTOI decreased significantly with increasing postnatal age [-0.59% each week (-1.26% to -0.07%) p = 0.04]. None of the examined confounding factors had a significant effect. CONCLUSIONS This is the first report of regional cerebral and splanchnic tissue oxygen saturation ranges during the first 8 weeks of life for preterm infants born at <30 weeks gestation.
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Affiliation(s)
- Claire N Howarth
- Homerton University Hospital NHS Foundation Trust, London, UK; Queen Mary University of London, London, UK.
| | - Terence S Leung
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK
| | - Jayanta Banerjee
- Imperial College Healthcare NHS Trust, London, UK; Imperial College London, UK
| | - Simon Eaton
- UCL Great Ormond Street Institute of Child Health, London, UK
| | | | - Narendra Aladangady
- Homerton University Hospital NHS Foundation Trust, London, UK; Queen Mary University of London, London, UK
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Mishra V, Cuna A, Singh R, Schwartz DM, Chan S, Maheshwari A. Imaging for Diagnosis and Assessment of Necrotizing Enterocolitis. NEWBORN (CLARKSVILLE, MD.) 2022; 1:182-189. [PMID: 36864828 PMCID: PMC9976546 DOI: 10.5005/jp-journals-11002-0002] [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: 06/18/2023]
Abstract
Necrotizing enterocolitis (NEC) is inflammatory bowel necrosis of preterm and critically ill infants. The disease is seen in 6-10% of preterm infants who weigh less than 1500 g at birth and carries considerable morbidity, mortality, and healthcare cost burden. Efforts focused on timely mitigation remain restricted due to challenges in early diagnosis as clinical features, and available laboratory tests remain nonspecific until late in the disease. There is renewed interest in the radiological and sonographic assessment of intestinal diseases due to technological advances making them safe, cost-efficient, and supporting Web-based transmission of images, thereby reducing time to diagnosis by disease experts. Most of our experience has been with plain abdominal radiography, which shows characteristic features such as pneumatosis intestinalis in up to 50-60% of patients. Many patients with advanced disease may also show features such as portal venous gas and pneumoperitoneum. Unfortunately, these features are not seen consistently in patients with early, treatable conditions, and hence, there has been an unfulfilled need for additional imaging modalities. In recent years, abdominal ultrasound (AUS) has emerged as a readily available, noninvasive imaging tool that may be a valuable adjunct to plain radiographs for evaluating NEC. AUS can allow real-time assessment of vascular perfusion, bowel wall thickness, with higher sensitivity in detecting pneumatosis, altered peristalsis, and characteristics of the peritoneal fluid. Several other modalities, such as contrast-enhanced ultrasound (CEUS), magnetic resonance imaging (MRI), and near-infrared spectroscopy (NIRS), are also emerging. In this article, we have reviewed the available imaging options for NEC evaluation.
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Affiliation(s)
- Vinayak Mishra
- Department of Pediatrics, Grant Medical College and Sir JJ Group of Hospitals, Mumbai, Maharashtra, India
| | - Alain Cuna
- Division of Neonatology, Children’s Mercy, Kansas City, Missouri, United States of America
| | - Rachana Singh
- Department of Pediatrics, Tufts Children’s Hospital, Boston, Massachusetts, United States of America
| | - Daniel M Schwartz
- Department of Radiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Sherwin Chan
- Department of Radiology, Children’s Mercy, Kansas City, Missouri, United States of America
| | - Akhil Maheshwari
- Global Newborn Society, Baltimore, Maryland, United States of America
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28
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Mishra V, Mathur AA, Mohamed S, Maheshwari A. Role of Near-infrared Spectroscopy in the Diagnosis and Assessment of Necrotizing Enterocolitis. NEWBORN (CLARKSVILLE, MD.) 2022; 1:177-181. [PMID: 36864826 PMCID: PMC9976547 DOI: 10.5005/jp-journals-11002-0001] [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: 11/23/2022]
Abstract
Near-infrared spectroscopy (NIRS) is a noninvasive, bedside diagnostic tool that could assist in the early diagnosis of necrotizing enterocolitis (NEC) in preterm neonates. NIRS is a safe and effective clinical tool in the neonatal intensive care unit to detect abnormal alterations in tissue perfusion and oxygenation. In addition, NIRS could also detect the complications of NEC, such as bowel necrosis and perforation. NEC is the most common gastrointestinal complication associated with preterm birth and critically ill infants. It is observed in 6-10% of preterm neonates, weighing below 1500 g, leading to considerable morbidity, mortality, and healthcare cost burden. The mortality rate ranges from 20 to 30%, highest in NEC infants undergoing surgery. NIRS is a promising diagnostic modality that could facilitate the early diagnosis of NEC and early detection of complications alone or with the imaging modalities.
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Affiliation(s)
- Vinayak Mishra
- Department of Pediatrics, Grant Medical College and Sir JJ Group of Hospitals, Mumbai, Maharashtra, India
| | - Amit A Mathur
- Department of Pediatrics, Saint Louis University, St Louis, Missouri, United States of America
| | - Shakir Mohamed
- Department of Neonatal-Perinatal Medicine, Saint Louis University School of Medicine, St Louis, Missouri, United States of America
| | - Akhil Maheshwari
- Global Newborn Society, Baltimore, Maryland, United States of America
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29
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Kalteren WS, Bos AF, van Oeveren W, Hulscher JBF, Kooi EMW. Neonatal anemia relates to intestinal injury in preterm infants. Pediatr Res 2022; 91:1452-1458. [PMID: 34907357 PMCID: PMC8670618 DOI: 10.1038/s41390-021-01903-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/03/2021] [Accepted: 11/26/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND Anemia is associated with decreased tissue oxygenation in preterm infants and may contribute to developing necrotizing enterocolitis (NEC). We aimed to investigate whether hemoglobin level is associated with intestinal injury, by comparing anemic infants 10 days prior to red blood cell (RBC) transfusion with non-anemic controls. METHODS A nested case-control study in which we matched anemic preterms (gestational age (GA) < 32 weeks) with non-anemic controls (1:1), based on GA, birth weight (BW), and postnatal age. We measured urinary intestinal fatty acid-binding protein, I-FABP, marker for intestinal injury, twice weekly. Simultaneously, we assessed splanchnic oxygen saturation (rsSO2) and rsSO2 variability. RESULTS Thirty-six cases and 36 controls were included (median GA 27.6 weeks, BW 1020 grams). Median I-FABP level was higher in cases from 6 days to 24-h before transfusion (median ranging: 4749-8064 pg/ml versus 2194-3751 pg/ml). RsSO2 and rsSO2 variability were lower in cases than controls shortly before transfusion. Hemoglobin levels correlated negatively with rsSO2 and rsSO2 variability in cases, and negatively with I-FABP in cases and controls together. CONCLUSIONS Urinary I-FABP levels were higher in anemic infants before RBC transfusion than in non-anemic matched controls, suggesting intestinal injury associated with anemia. This may predispose to NEC in some anemic preterm infants. IMPACT Anemia is a common comorbidity in preterm infants and may lead to impaired splanchnic oxygen saturation and intestinal tissue hypoxia, a proposed mechanism for NEC. Lower hemoglobin level is associated with higher urinary I-FABP levels, a marker for intestinal injury, both in anemic preterm infants and in cases and controls together. Lower splanchnic oxygen saturation and reduction of its variability are associated with higher urinary I-FABP levels in anemic preterm infants before their first RBC transfusion. These results support the hypothesis that anemia in very preterm infants results in intestinal cell injury, which may precede NEC development in some.
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Affiliation(s)
- Willemien S. Kalteren
- grid.4494.d0000 0000 9558 4598Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Arend F. Bos
- grid.4494.d0000 0000 9558 4598Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Jan B. F. Hulscher
- grid.4494.d0000 0000 9558 4598Division of Pediatric Surgery, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Elisabeth M. W. Kooi
- grid.4494.d0000 0000 9558 4598Division of Neonatology, Department of Pediatrics, Beatrix Children’s Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Howarth C, Banerjee J, Leung T, Aladangady N. Could Near Infrared Spectroscopy (NIRS) be the new weapon in our fight against Necrotising Enterocolitis? Front Pediatr 2022; 10:1024566. [PMID: 36425397 PMCID: PMC9679512 DOI: 10.3389/fped.2022.1024566] [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: 08/21/2022] [Accepted: 10/17/2022] [Indexed: 11/10/2022] Open
Abstract
There is no ideal single gut tissue or inflammatory biomarker available to help to try and identify Necrotising Enterocolitis (NEC) before its clinical onset. Neonatologists are all too familiar with the devastating consequences of NEC, and despite many advances in neonatal care the mortality and morbidity associated with NEC remains significant. In this article we review Near Infrared Spectroscopy (NIRS) as a method of measuring regional gut tissue oxygenation. We discuss its current and potential future applications, including considering its effectiveness as a possible new weapon in the early identification of NEC.
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Affiliation(s)
- Claire Howarth
- Neonatal Unit, Homerton Healthcare NHS Foundation Trust, London, United Kingdom
| | - Jayanta Banerjee
- Neonatal Unit, Imperial College Healthcare NHS Trust and Imperial College London, London, United Kingdom
| | - Terence Leung
- Department of Medical Physics and Biomedical Engineering, Faculty of Engineering Sciences, University College London, London, United Kingdom
| | - Narendra Aladangady
- Neonatal Unit, Homerton Healthcare NHS Foundation Trust, London, United Kingdom.,Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, United Kingdom
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Levy PT, Pellicer A, Schwarz CE, Neunhoeffer F, Schuhmann MU, Breindahl M, Fumagelli M, Mintzer J, de Boode W. Near-infrared spectroscopy for perioperative assessment and neonatal interventions. Pediatr Res 2021:10.1038/s41390-021-01791-1. [PMID: 34716423 DOI: 10.1038/s41390-021-01791-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 11/08/2022]
Abstract
Perioperative applications of near-infrared spectroscopy (NIRS) to monitor regional tissue oxygenation and perfusion in cardiac and noncardiac surgery are of increasing interest in neonatal care. Complex neonatal surgery can impair adequate oxygen delivery and tissue oxygen consumption and increase the risk of neurodevelopmental delay. Coupled with conventional techniques, NIRS monitoring may enable targeted hemodynamic management of the circulation in both cardiac and noncardiac surgical procedures. In this narrative review, we discuss the application of perioperative NIRS in specific neonatal interventions, including surgical intervention for congenital heart defects, definitive closure of the patent ductus arteriosus, neurological and gastrointestinal disorders, and use of extracorporeal membrane oxygenation. We identified areas for future research within disease-specific indications and offer a roadmap to aid in developing evidence-based targeted diagnostic and management strategies in neonates. IMPACT: There is growing recognition that perioperative NIRS monitoring, used in conjunction with conventional monitoring, may provide critical hemodynamic information that either complements clinical impressions or delivers novel physiologic insight into the neonatal circulatory and perfusion pathways.
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Affiliation(s)
- Philip T Levy
- Department of Pediatrics, Harvard Medical School and Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, USA.
| | - Adelina Pellicer
- Department of Neonatology, La Paz University Hospital, Madrid, Spain
| | - Christoph E Schwarz
- Department of Neonatology, University Children's Hospital, Tübingen, Germany
- Infant Research centre, University College Cork Ireland, Cork, Ireland
| | - Felix Neunhoeffer
- Department of Pediatric Cardiology, Pulmonology and Pediatric Intensive Care Medicine, University Children's Hospital Tübingen, Hoppe-Seyler-Str. 1, 72076, Tübingen, Germany
| | - Martin U Schuhmann
- Department of Neurosurgery, University Hospital Tübingen, 72076, Tübingen, Germany
| | - Morten Breindahl
- Department of Neonatology, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Monica Fumagelli
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milano, Italy
| | - Jonathan Mintzer
- Division of Newborn Medicine, Department of Pediatrics, Mountainside Medical Center, Montclair, NJ, USA
| | - Willem de Boode
- Department of Neonatology, Radboud University Medical Center, Radboud Institute for Health Sciences, Amalia Children's Hospital, Nijmegen, The Netherlands
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Weeks CL, Marino LV, Johnson MJ. A systematic review of the definitions and prevalence of feeding intolerance in preterm infants. Clin Nutr 2021; 40:5576-5586. [PMID: 34656954 DOI: 10.1016/j.clnu.2021.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 08/03/2021] [Accepted: 09/07/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND & AIMS Feeding intolerance (FI) is a common phenomenon experienced in preterm infants in neonatal intensive care units, as well as being a focus of many research studies into feeding methods, particularly in relation to comorbidities. There is no widely accepted definition of FI. This systematic review aimed to explore the range of definitions used for FI and provide an estimate of the prevalence amongst preterm infants. METHODS Searches were completed on MEDLINE (includes the Cochrane library), Embase, PsycInfo, CINAHL, NHS Evidence and Web of Science. Inclusion criteria; preterm infants in neonatal units, a clear definition of FI, >10 patients and be available in English language. Case reports were excluded. RESULTS One hundred studies were included. Definitions of FI were inconsistent. Studies were grouped according to definition used into: Group A - measuring gastric residual volume (GRV) only; group B - GRV and abdominal distension (AD); group C - GRV, AD and gastrointestinal symptoms (GI) which included any of vomiting, bilious vomiting and blood in stool; group D- GRV and GI; group E - AD and GI; group F - GI only and group G - any other elements used. Meta-analysis demonstrated that prevalence of FI between groups varied from 15 to 30% with an overall prevalence of 27% (95% confidence interval 23-31%). Group A had the highest prevalence. Review of time to full enteral feed was performed (37 studies) which demonstrated a range of 11.3-18.3 days depending on which FI definition used. DISCUSSION Definitions of FI in research are inconsistent, a similar finding to that seen in studies in both paediatric and adult critical care populations. The difficulty of defining FI in the preterm population is the concern regarding necrotising enterocolitis, with some studies using an overlap in their definitions, despite differing pathophysiology and management. Due to the heterogeneity of data obtained in this review regarding definitions used, further robust research is required in order to conclude which elements which should be used to define FI in this population. PROSPERO NUMBER CRD42019155596. Registered November 2019.
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Affiliation(s)
- Charlotte L Weeks
- Paediatric Intensive Care Unit, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, UK.
| | - Luise V Marino
- Department of Dietetics/SLT, University Hospital Southampton NHS Foundation Trust, Southampton, UK; NIHR Biomedical Research Centre Southampton, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, UK
| | - Mark J Johnson
- NIHR Biomedical Research Centre Southampton, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, UK; Department of Neonatal Medicine, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, UK
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Zhang JH, Guan RL, Pan PP, Lu WN, Zhang HY. Changing trend of abdominal regional oxygen saturation in very/extremely low birth weight infants in the early postnatal stage: a prospective study. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2021; 23:1015-1020. [PMID: 34719416 DOI: 10.7499/j.issn.1008-8830.2105156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVES To study the changing trend of abdominal regional oxygen saturation (A-rSO2) in very/extremely low birth weight (VLBW/ELBW) infants after birth. METHODS The VLBW/ELBW infants who were admitted to the neonatal intensive care unit from September 2019 to May 2021 were enrolled as subjects. Near-infrared spectroscopy was used to monitor A-rSO2 since day 1 after birth for 4 weeks. According to gestational age, the infants were divided into a low gestational age (<29 weeks) group and a high gestational age (≥29 weeks) group. The two groups were compared in terms of A-rSO2 within 4 weeks after birth. RESULTS A total of 63 VLBW/ELBW infants were enrolled, with 30 infants in the <29 weeks group and 33 in the ≥29 weeks group. A-rSO2 fluctuated within the first 2 weeks after birth in the 63 infants and had the lowest level of 47.9% on day 1 after birth and then gradually increased, reaching the peak level of 67.4% on day 4; it gradually decreased on days 5-9, then gradually increased, and became relatively stable 2 weeks after birth. The ≥29 weeks group had significantly higher A-rSO2 than the <29 weeks group at weeks 1 and 2 after birth (P<0.05), while there was no significant difference in A-rSO2 between the two groups at weeks 3 and 4 after birth (P>0.05). CONCLUSIONS In infants with VLBW/ELBW, A-rSO2 fluctuates within the first 2 weeks after birth and then gradually becomes stable. A-rSO2 is associated with gestational age within 2 weeks after birth.
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Affiliation(s)
- Jing-Hua Zhang
- Department of Neonatology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Rui-Lian Guan
- Department of Neonatology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Pian-Pian Pan
- Department of Neonatology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Wei-Neng Lu
- Department of Neonatology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Hua-Yan Zhang
- Department of Neonatology, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
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Metcalfe KHM, Stienstra R, McHoney M. NIRS as a biomarker of bowel ischaemia & surgical pathology: A meta-analysis of studies in newborns. Early Hum Dev 2021; 161:105437. [PMID: 34411803 DOI: 10.1016/j.earlhumdev.2021.105437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE We performed a meta-analysis on Near-infrared Spectroscopy (NIRS) as a biomarker of bowel ischaemia. SUMMARY BACKGROUND DATA NIRS allows non-invasive assessment of gastrointestinal regional oxygen saturation (GrSO2). Studies to date have focused on the feasibility of NIRS in clinical practice and its reproducibility. GrSO2 can be used alone, or in conjunction with cerebral NIRS to give a Cerebral Splanchnic Oxygenation Ratio (CSOR). We assess published data on abdominal NIRS as a marker of bowel ischaemia. METHODS A literature review was conducted using the PRISMA method. Data on GrSO2 and CSOR in controls and patients with confirmed ischaemia was included in a meta-analysis, and used to identify a diagnostic threshold. RESULTS 14 studies were identified. Meta-analysis demonstrated that GrSO2 (p < 0.01) and CSOR (p < 0.01) were significantly lower in neonates with bowel pathology associated with ischaemia than controls. Area under the curve for GrSO2 was 0.80, with Youden's index highest (0.52) at a GrSO2 of 42% (specificity 91% and sensitivity 62%). For CSOR, area under the curve is 0.89, with Youden's index highest (0.69) at 0.76 (specificity of 80%, sensitivity 90%). CONCLUSIONS Splanchnic NIRS correlates with bowel ischaemia. Low GrSO2 is consistently associated with ischaemia, although a specific cut off level in each patient is hard to define. However, values below 42% correlate strongly with ischaemia while values above 52% are more suggestive of patients without bowel pathology. CSOR of below 0.76 is strongly suggestive of ischaemia. Trends within individuals are likely to be able to provide even more clinically correlatable and diagnostic data.
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Affiliation(s)
- Kiloran H M Metcalfe
- University of Edinburgh, College of Medicine, United Kingdom of Great Britain and Northern Ireland
| | - Roxane Stienstra
- Department Paediatric Surgery, Royal Hospital for sick Children Edinburgh, United Kingdom of Great Britain and Northern Ireland
| | - Merrill McHoney
- University of Edinburgh, College of Medicine, United Kingdom of Great Britain and Northern Ireland; Department Paediatric Surgery, Royal Hospital for sick Children Edinburgh, United Kingdom of Great Britain and Northern Ireland.
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Regional splanchnic oxygen saturation for preterm infants in the first week after birth: reference values. Pediatr Res 2021; 90:882-887. [PMID: 33504960 DOI: 10.1038/s41390-020-01323-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 11/16/2020] [Accepted: 12/01/2020] [Indexed: 01/30/2023]
Abstract
BACKGROUND Near-infrared spectroscopy is used in the assessment of regional splanchnic oxygen saturation (rsSO2), but solid reference values are scarce. We aimed to establish reference values of rsSO2 for preterm infants during the first week after birth, both crude and modeled based on predictors. METHODS We included infants with gestational age (GA) <32 weeks and/or birth weight <1200 g. We excluded infants who developed necrotizing enterocolitis or sepsis or who died. In the first week after birth, we determined a daily 2-h mean of rsSO2 to assess its associations with sex, GA, postnatal age (PNA), small-for-gestational age (SGA) status, patent ductus arteriosus, hemoglobin, nutrition, and head circumference at birth and translated those into a prediction model. RESULTS We included 220 infants. On day 1, the mean ± SD rsSO2 value was 48.2% ± 16.6. The nadir of rsSO2 was on day 4 (38.7% ± 16.6 smoothed line) to 5 (37.4%±17.3, actual data), after which rsSO2 increased to 44.2% ± 16.6 on day 7. The final model of the reference values of rsSO2 included the following coefficients: rsSO2 = 3.2 - 7.0 × PNA + 0.8 × PNA2 - 4.0 × SGA + 1.8 × GA. CONCLUSIONS We established reference values of rsSO2 for preterm infants during the first week after birth. GA, PNA, and SGA affect these values and need to be taken into account. IMPACT Regional splanchnic oxygen saturation is lower in infants with a lower gestational age and in small-for-gestational age infants. Regional splanchnic oxygen saturation decreases with a higher postnatal age until day 4 after birth and then increases until day 7 after birth. Gestational age, postnatal age, and small-for-gestational age status affect regional splanchnic oxygen saturation and need to be taken into account when interpreting regional splanchnic oxygen saturations using NIRS. Reference values for infant regional splanchnic oxygen saturation can be computed with a formula based on these variables, as provided by this study.
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Abstract
OBJECTIVE The aim of this study is to assess the effects of administering 20 mg/kg loading dose of caffeine citrate intravenously on splanchnic oxygenation in preterm infants. STUDY DESIGN The infants with a gestational age (GA) of <34 weeks who were administered with a 20 mg/kg intravenous loading dose of caffeine citrate within 48 hours after birth were investigated prospectively. Regional splanchnic oxygen saturation (rsSO2) and splanchnic fractional tissue oxygen extraction rate (sFTOE) were measured using near-infrared spectroscopy before caffeine infusion, immediately after caffeine infusion and 1, 2, 3, 4, and 6 hours (h) after dose completion; postdose values were compared with predose values. RESULTS A total of 41 infants with a mean GA of 29.2 ± 1.6 weeks and birth weight of 1,315 ± 257 g as well as postnatal age of 32.2 ± 10.8 hours were included in the study. rsSO2 significantly reduced from 63.1 to 57.5% immediately after caffeine infusion, 55.1% after 1 hour, and 55.2% after 2 hours with partial recovery at 3-hour postdose. sFTOE increased correspondingly. CONCLUSION Caffeine reduces splanchnic oxygenation and increases splanchnic oxygen extraction for at least 2 hours with partial recovery to predose levels at 3-hour postdose.
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Affiliation(s)
- Ozkan Ilhan
- Department of Neonatology, Harran University School of Medicine, Sanliurfa, Turkey
| | - Meltem Bor
- Department of Neonatology, Harran University School of Medicine, Sanliurfa, Turkey
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Abstract
BACKGROUND Acute kidney injury (AKI) affects approximately 30% of infants admitted to the neonatal intensive care unit (NICU), and increases mortality risk by 50%. Current diagnostic criteria (serum creatinine rise with oliguria) cannot detect early-onset AKI, as up to 50% of nephron damage may occur by the time these abnormalities present. Once AKI is established, clinical management is often ineffective; therefore, prevention is key. Near-infrared spectroscopy (NIRS) offers a feasible, noninvasive approach to continuously monitor renal oxygenation trends over time, serving as a surrogate marker for renal perfusion. PURPOSE To provide an overview of NIRS principles for measuring renal oxygenation, and to describe current evidence of how this technology is being used among infants admitted to the NICU relative to the prediction and identification of AKI. METHODS A comprehensive search of PubMed and CINHAL focused on renal NIRS studies in NICU preterm and term infants was conducted. RESULTS Findings from 34 studies were included. In term infants, reduced renal oxygenation correlated to invasive SvO2 monitoring, predicted survivability and AKI. In preterm infants, reduced renal oxygenation was associated with AKI in one study, yet contrasting findings were reported in those with patent ductus arteriosus, including those who received prostaglandin inhibitors. Normative data in all infants were sparse. IMPLICATIONS FOR PRACTICE Renal NIRS may offer a noninvasive measurement of kidney hypoperfusion that may precede conventional diagnostic measures. IMPLICATIONS FOR RESEARCH Normative data are lacking, the threshold for renal ischemia is not defined, and consensus guiding clinical treatment based on NIRS data is nonexistent.
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Le Bouhellec J, Prodhomme O, Mura T, Jacquot A, Combes C, Gamon L, Durand S, Filleron A, Cambonie G. Near-Infrared Spectroscopy: A Tool for Diagnosing Necrotizing Enterocolitis at Onset of Symptoms in Preterm Neonates with Acute Gastrointestinal Symptoms? Am J Perinatol 2021; 38:e299-e308. [PMID: 32325507 DOI: 10.1055/s-0040-1710033] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE In premature neonates, bloody stools and/or abdominal distension with feeding intolerance may be inaugural signs of necrotizing enterocolitis (NEC). We assessed the ability of near-infrared spectroscopy (NIRS) to distinguish those neonates with NEC soon after the occurrence of these symptoms. STUDY DESIGN We prospectively collected NIRS measurements of abdominal and cerebral regional tissue oxygen saturation (r-SO2), with values masked by an opaque cover. Two physicians, blinded to the NIRS data, determined whether the gastrointestinal symptoms were related to NEC 10 days after symptom onset. RESULTS Forty-five neonates with mean (standard deviation [SD]) gestational, birth weight and postnatal ages of 31 (3.9) weeks, 1,486 (794) g, and 18 (14) days were enrolled over 30 months. Gastrointestinal symptoms were related to NEC in 23 patients and associated with other causes in 22. Analysis of the 48 hours of monitoring revealed comparable abdominal r-SO2 and splanchnic-cerebral oxygenation ratio (SCOR) in patients with and without NEC (r-SO2: 47.3 [20.4] vs. 50.4 [17.8], p = 0.59, SCOR: 0.64 [0.26] vs. 0.69 [0.24], p = 0.51). Results were unchanged after NIRS analysis in 6-hour periods, and restriction of the analysis to severe NEC (i.e., grade 2 and 3, 57% of the NEC cases). CONCLUSION In this study, NIRS monitoring was unable to individualize NEC in premature infants with acute gastrointestinal symptoms.
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Affiliation(s)
- Julia Le Bouhellec
- Neonatal Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Olivier Prodhomme
- Department of Pediatric Radiology, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Thibault Mura
- Department of Medical Information, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Aurélien Jacquot
- Neonatal Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Clémentine Combes
- Neonatal Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Lucie Gamon
- Department of Medical Information, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Sabine Durand
- Neonatal Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Anne Filleron
- Department of Pediatrics, Carémeau Hospital, Nîmes University Hospital Center, Nîmes, France
| | - Gilles Cambonie
- Neonatal Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
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Near-infrared spectroscopy as a diagnostic tool for necrotizing enterocolitis in preterm infants. Pediatr Res 2021; 90:148-155. [PMID: 33036017 DOI: 10.1038/s41390-020-01186-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/11/2020] [Accepted: 09/12/2020] [Indexed: 01/28/2023]
Abstract
BACKGROUND We aimed to investigate whether splanchnic tissue oxygen saturation (rsSO2) measured by near-infrared spectroscopy (NIRS) could contribute to the early diagnosis of necrotizing enterocolitis (NEC). METHODS We retrospectively included infants with suspected NEC, gestational age <32 weeks and/or birth weight <1200 g in the first 3 weeks after birth. We calculated mean rsSO2, cerebral tissue oxygen saturation (rcSO2), variability of rsSO2 (coefficients of variation [rsCoVAR] = SD/mean), and splanchnic-cerebral oxygenation ratio ([SCOR] = rsSO2/rcSO2) in the period around the abdominal radiograph to confirm or reject NEC. RESULTS Of the 75 infants, 21 (28%) had NEC (Bell's stage ≥2). Characteristics of infants with and without NEC differed only on mechanical ventilation and nil-per-os status. RsSO2 tended to be higher and rcSO2 lower in infants with NEC. RsCoVAR (median [range]) was lower (0.11 [0.03-0.34]) vs. 0.20 [0.01-0.52], P = 0.002) and SCOR higher (0.64 [0.37-1.36]) vs. 0.47 [0.16-1.09], P = 0.004) in NEC infants. Adjusted for postnatal age, mechanical ventilation, and nil-per-os status, a 0.1 higher rsCoVAR decreased the likelihood of NEC diagnosis with likelihood ratio (LR) 0.38 (95% CI 0.18-0.78) and a 0.1 higher SCOR increased it with LR 1.28 (1.02-1.61). CONCLUSIONS Using NIRS, high SCOR may confirm NEC and high variability of rsSO2 may rule out NEC, when suspicion arises. IMPACT Near-infrared spectroscopy may contribute to the diagnosis of necrotizing enterocolitis. When clinical signs are present a high splanchnic-cerebral oxygenation may indicate necrotizing enterocolitis. A low splanchnic-cerebral oxygenation ratio and high variability of splanchnic tissue oxygen saturation may rule out necrotizing enterocolitis. Whether a bedside real-time availability of the splanchnic-cerebral oxygenation ratio and variability of splanchnic tissue oxygen saturation improves NEC diagnosis needs to be further investigated.
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Cibulskis CC, Maheshwari A, Rao R, Mathur AM. Anemia of prematurity: how low is too low? J Perinatol 2021; 41:1244-1257. [PMID: 33664467 DOI: 10.1038/s41372-021-00992-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 01/20/2021] [Accepted: 02/04/2021] [Indexed: 12/11/2022]
Abstract
Anemia of prematurity (AOP) is a common condition with a well-described chronology, nadir hemoglobin levels, and timeline of recovery. However, the underlying pathophysiology and impact of prolonged exposure of the developing infant to low levels of hemoglobin remains unclear. Phlebotomy losses exacerbate the gradual decline of hemoglobin levels which is insidious in presentation, often without any clinical signs. Progressive anemia in preterm infants is associated with poor weight gain, inability to take oral feeds, tachycardia and exacerbation of apneic, and bradycardic events. There remains a lack of consensus on treatment thresholds for RBC transfusion which vary considerably. This review elaborates on the current state of the problem, its implication for the premature infant including association with subphysiologic cerebral tissue oxygenation, necrotizing enterocolitis, and retinopathy of prematurity. It outlines the impact of prophylaxis and treatment of anemia of prematurity and offers suggestions on improving monitoring and management of the condition.
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Affiliation(s)
- Catherine C Cibulskis
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Akhil Maheshwari
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Rakesh Rao
- Department of Pediatrics, Division of Newborn Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Amit M Mathur
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, Saint Louis University School of Medicine, St. Louis, MO, USA.
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Dani C, Ciarcià M, Luzzati M, Nardecchia S, Petrolini C, Sarli WM, Tellini M, Pratesi S. Feeding intolerance during phototherapy in preterm infants. J Matern Fetal Neonatal Med 2021; 35:6610-6614. [PMID: 33906567 DOI: 10.1080/14767058.2021.1918093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Many very preterm infants are treated with phototherapy (PT) for hyperbilirubinemia and it has been reported that PT can negatively affect gut perfusion. Thus, our aim was to evaluate the occurrence of feeding intolerance in the course of PT in these patients. METHODS We retrospectively studied infants born at 25+0-31+6 weeks from November 2017 to April 2020 who required PT during the first two weeks of life. Patients were used as their own controls recording for each one the occurrence of feeding intolerance after starting PT and the resumption of feeding tolerance after its termination. RESULTS We studied 125 preterm infants of whom 58 (46%) developed a feeding intolerance which disappeared in 47 (81%) of them at the end of PT. Regression analysis showed a trend toward a not significant decrease of risk of feeding intolerance in infants with higher birth weight and age at the start of the first course of PT. CONCLUSION We found that about half of our patients developed a transient feeding intolerance during PT that ceased in the vast majority of them after termination of the therapy. Further studies are necessary to confirm the correlation between PT and feeding intolerance.
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Affiliation(s)
- Carlo Dani
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy.,Department of Neurosciences, Psychology, Drug Research and Child Health, Careggi University Hospital of Florence, Florence, Italy
| | - Martina Ciarcià
- Department of Neurosciences, Psychology, Drug Research and Child Health, Careggi University Hospital of Florence, Florence, Italy
| | - Michele Luzzati
- Department of Neurosciences, Psychology, Drug Research and Child Health, Careggi University Hospital of Florence, Florence, Italy
| | - Silvia Nardecchia
- Department of Neurosciences, Psychology, Drug Research and Child Health, Careggi University Hospital of Florence, Florence, Italy
| | - Chiara Petrolini
- Department of Neurosciences, Psychology, Drug Research and Child Health, Careggi University Hospital of Florence, Florence, Italy
| | - Walter Maria Sarli
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy
| | - Marco Tellini
- Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy
| | - Simone Pratesi
- Department of Neurosciences, Psychology, Drug Research and Child Health, Careggi University Hospital of Florence, Florence, Italy
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Stienstra RM, McHoney M. Near-infrared spectroscopy (NIRS) measured tissue oxygenation in neonates with gastroschisis: a pilot study. J Matern Fetal Neonatal Med 2021; 35:5099-5107. [PMID: 33602021 DOI: 10.1080/14767058.2021.1875429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Management of gastroschisis involves either primary or staged closure. Bowel ischemia and abdominal compartment syndrome (ACS) are possible complications that can be related to a method of treatment. NIRS monitoring has never been applied in this group of patients and may allow for earlier detection of complications. OBJECTIVE To assess near-infrared spectroscopy (NIRS) monitoring in neonates with gastroschisis for detecting changes in tissue oxygenation (rSO2) related to bowel reductions or height of bowel in the silo and for detecting tissue ischemia. METHODS Patients with gastroschisis and controls underwent continuous multi-channel assessment of oxygenation of the brain (CrSO2), kidney (RrSO2) and bowel (GrSO2) in a prospective pilot study. RESULTS Fifteen neonates were treated with primary closure (n = 3) or staged closure (n = 12); two had confirmed bowel ischemia, none developed ACS.There was no significant correlation between height of the bowel and GrSO2 at apex (p = .72) or base (p = .54) within the silo. During staged reductions there was a clinically non-significant change in RrSO2 (Δ-2.5%, p = .04), but no significant changes in CrSO2 (p = .11), and GrSO2 of apex (p = .97) and base (p = .31). Patients with confirmed ischemia had GrSO2 that were lower than controls. CONCLUSIONS Measuring GrSO2 through a silo is feasible. Staged reduction seems safe based on NIRS measurements, with minimal effect of hydrostatic pressure on bowel oxygenation. NIRS was able to detect subtle changes in intra-abdominal renal perfusion during reduction and could differentiate healthy and ischemic bowel.
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Affiliation(s)
- Roxane M Stienstra
- University of Groningen, Groningen, the Netherlands.,Department of Paediatric Surgery, Royal Hospital for Sick Children, Edinburgh, Scotland
| | - Merrill McHoney
- Department of Paediatric Surgery, Royal Hospital for Sick Children, Edinburgh, Scotland
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Goldshtrom N, Isler JR, Sahni R. Comparing liver and lower abdomen near-infrared spectroscopy in preterm infants. Early Hum Dev 2020; 151:105194. [PMID: 33017708 DOI: 10.1016/j.earlhumdev.2020.105194] [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: 03/05/2020] [Revised: 09/10/2020] [Accepted: 09/16/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND Near-infrared spectroscopy (NIRS) is being increasingly used to investigate regional oxygenation (rSO2) and perfusion in areas such as the abdomen in preterm infants prone to feeding intolerance. Lower abdominal rSO2 values are extremely variable, high sensitivity and currently low specificity tools. The liver, a solid organ, could provide a more reliable site for splanchnic oxygenation and perfusion monitoring. AIMS Compare liver and lower abdomen rSO2 values in stable preterm infants in response to feeding. STUDY DESIGN We prospectively evaluated the correlation between rSO2 over the liver and lower abdomen in 16 preterm infants born between 28 and 32 weeks' gestational age using 48 h of continuous NIRS data. OUTCOME MEASURES Mean liver and lower abdomen rSO2 values. RESULTS The overall mean liver rSO2 were higher than the overall mean lower abdomen values, 78.4 ± 7.1 vs. 65.1 ± 24.9 respectively. Time series analysis showed a mean maximum cross correlation between the liver and lower abdomen of 0.28 (SD ± 0.03; p < 0.001); the liver signal lagged the lower abdomen by an average of 5.4 s (SD ± 1.2 s, Range 0-16 s). Mixed models analysis showed that during bolus feeding, liver values increased 10 to 30 min after the start of feeding (p < 0.01) while lower abdomen increased from 20 to 60 min after the start of feeding (p < 0.05) and liver values were less variable than lower abdomen values. CONCLUSION Liver rSO2 appears to be a more stable surrogate for splanchnic oxygenation and perfusion than lower abdomen rSO2.
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Affiliation(s)
- Nimrod Goldshtrom
- Department of Pediatrics, Columbia University, 630 West 168th Street, New York, NY, 10032, USA.
| | - Joseph R Isler
- Department of Pediatrics, Columbia University, 630 West 168th Street, New York, NY, 10032, USA.
| | - Rakesh Sahni
- Department of Pediatrics, Columbia University, 630 West 168th Street, New York, NY, 10032, USA.
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Low Splanchnic Oxygenation and Risk for Necrotizing Enterocolitis in Extremely Preterm Newborns. J Pediatr Gastroenterol Nutr 2020; 71:401-406. [PMID: 32404748 DOI: 10.1097/mpg.0000000000002761] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE The aim of the study was to investigate whether splanchnic oxygenation (SrSO2), measured with near-infrared spectroscopy (NIRS), during the first week of life is associated with the risk of developing necrotizing enterocolitis (NEC) in extremely preterm infants. METHODS This was a prospective observational cohort study including extremely preterm infants (<28 weeks of gestation) born at Karolinska University Hospital from September 2014 to December 2016. Using 1-hour NIRS monitoring during enteral feeding, mainly continuous enteral feeding, in the first week of life we measured both cerebral and splanchnic oxygenation. Primary outcome was risk of developing NEC (Bell stage ≥ II). Secondary outcome was the association between low mean SrSO2 during the first week of life and postnatal age at full enteral nutrition. RESULTS We enrolled 52 extremely preterm newborns, but only 45 infants had complete NIRS data. One infant developed NEC within 1 day of NIRS monitoring and was excluded from the study. Median gestational age was 25.6 weeks (range 23.0-27.9) and median birth weight 698 g (range 485-1353). Eight infants developed NEC at the median postnatal age of 15 days (range 6-35). Median postnatal age at full enteral nutrition was 10 days (range 6-23). Infants with mean SrSO2 <30% had a higher risk for developing NEC compared with those with SrSO2 >30% (crude risk ratio 5.25; 95% CI [1.19-23.01]). Small for gestational age, gestational age, birth weight, postnatal age did not affect the results. We found no association between SrSO2 and age at full enteral nutrition. CONCLUSIONS Low mean SrSO2 (<30%) during the first week of life is associated with an increased risk for developing NEC in extremely preterm infants on mainly continuous enteral nutrition.
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Abstract
Necrotizing enterocolitis (NEC) accounts for 10% of deaths in neonatal intensive care units. Several causal mechanisms are likely to lead to a final common disease phenotype. This article summarizes recent data on NEC following red blood cell (RBC) transfusion, with a focus on the most recent literature and ongoing trials. It highlights potential mechanisms from preclinical and human physiologic studies. It also discusses the role of feeding during RBC transfusion and the risk of NEC. Ongoing randomized trials will provide important data on how liberal or conservative approaches to RBC transfusion influence the risk of NEC.
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Affiliation(s)
- Allison Thomas Rose
- Division of Neonatology, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta, 2015 Uppergate Drive Northeast, Atlanta, GA 30322, USA. https://twitter.com/404Rose
| | - Vivek Saroha
- Division of Neonatology, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta, 2015 Uppergate Drive Northeast, Atlanta, GA 30322, USA. https://twitter.com/vsaroha
| | - Ravi Mangal Patel
- Division of Neonatology, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta, 2015 Uppergate Drive Northeast, Atlanta, GA 30322, USA.
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Fuentes Carballal J, Avila-Alvarez A, Taboada Perianes M, Martínez Regueira S, Fernández Trisac JL. Splanchnic oximetry in small for gestational age neonates in relation to prenatal Doppler study. ANALES DE PEDIATRÍA (ENGLISH EDITION) 2020. [DOI: 10.1016/j.anpede.2019.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Intestinal Oxygenation and Survival After Surgery for Necrotizing Enterocolitis: An Observational Cohort Study. Ann Surg 2020; 275:e503-e510. [PMID: 32324690 DOI: 10.1097/sla.0000000000003913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To assess whether regional intestinal oxygen saturation (rintSO2) and regional cerebral oxygen saturation (rcSO2) measurements aid in estimating survival of preterm infants after surgery for NEC. SUMMARY OF BACKGROUND DATA Predicting survival after surgery for NEC is difficult yet of the utmost importance for counseling parents. METHODS We retrospectively studied prospectively collected data of preterm infants with surgical NEC who had available rintSO2 and rcSO2 values measured via near-infrared spectroscopy 0-24 hours preoperatively. We calculated mean rintSO2 and rcSO2 for 60-120 minutes for each infant. We analyzed whether preoperative rintSO2 and rcSO2 differed between survivors and non-survivors, determined cut-off points, and assessed the added value to clinical variables. RESULTS We included 22 infants, median gestational age 26.9 weeks [interquartile range (IQR): 26.3-28.4], median birth weight 1088 g [IQR: 730-1178]. Eleven infants died postoperatively. Preoperative rintSO2, but not rcSO2, was higher in survivors than in non-survivors [median: 63% (IQR: 42-68) vs 29% (IQR: 21-43), P < 0.01), with odds ratio for survival 4.1 (95% confidence interval, 1.2-13.9, P = 0.02) per 10% higher rintSO2. All infants with rintSO2 values of >53% survived, whereas all infants with rintSO2 <35% died. Median C-reactive protein [138 mg/L (IQR: 83-179) vs 73 mg/L (IQR: 12-98), P < 0.01), lactate [1.1 mmol/L (IQR: 1.0-1.6) vs 4.6 mmol/L (IQR: 2.8-8.0), P < 0.01], and fraction of inspired oxygen [25% (IQR: 21-31) vs 42% (IQR: 30-80), P < 0.01] differed between survivors and non-survivors. Only rintSO2 remained significant in the multiple regression model. CONCLUSIONS Measuring rintSO2, but not rcSO2, seems of added value to clinical variables in estimating survival of preterm infants after surgery for NEC. This may help clinicians in deciding whether surgery is feasible and to better counsel parents about their infants' chances of survival.
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Predicting intestinal recovery after necrotizing enterocolitis in preterm infants. Pediatr Res 2020; 87:903-909. [PMID: 31649338 DOI: 10.1038/s41390-019-0634-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/02/2019] [Accepted: 10/07/2019] [Indexed: 01/10/2023]
Abstract
BACKGROUND Intestinal recovery after NEC is difficult to predict in individuals. We evaluated whether several biomarkers predict intestinal recovery after NEC in preterm infants. METHODS We measured intestinal tissue oxygen saturation (rintSO2) and collected urinary intestinal-fatty acid binding protein (I-FABPu) levels 0-24 h and 24-48 h after NEC onset, and before and after the first re-feed. We assessed intestinal recovery in two ways: time to full enteral feeding (FEFt; below or equal/above group's median) and development of post-NEC complications (recurrent NEC/post-NEC stricture). We determined whether the rintSO2, its range, and I-FABPu differed between groups. RESULTS We included 27 preterm infants who survived NEC (Bell's stage ≥ 2). Median FEFt was 14 [IQR: 12-23] days. Biomarkers only predicted intestinal recovery after the first re-feed. Mean rintSO2 ≥ 53% combined with mean rintSO2range ≥ 50% predicted FEFt < 14 days with OR 16.7 (CI: 2.3-122.2). The rintSO2range was smaller (33% vs. 51%, p < 0.01) and I-FABPu was higher (92.4 vs. 25.5 ng/mL, p = 0.03) in case of post-NEC stricture, but not different in case of recurrent NEC, compared with infants without complications. CONCLUSION The rintSO2, its range, and I-FABPu after the first re-feed after NEC predicted intestinal recovery. These biomarkers have potential value in individualizing feeding regimens after NEC.
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Balegar V KK, Jayawardhana M, Martin AJ, de Chazal P, Nanan RKH. Association of Bolus Feeding With Splanchnic and Cerebral Oxygen Utilization Efficiency Among Premature Infants With Anemia and After Blood Transfusion. JAMA Netw Open 2020; 3:e200149. [PMID: 32108891 PMCID: PMC7049081 DOI: 10.1001/jamanetworkopen.2020.0149] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
IMPORTANCE The pathogenesis of transfusion-associated necrotizing enterocolitis remains elusive. Splanchnic hypoperfusion associated with packed red blood cell transfusion (PRBCT) and feeding has been implicated, but studies of splanchnic tissue oxygenation with respect to feeding plus PRBCT are lacking. OBJECTIVE To investigate the oxygen utilization efficiency of preterm gut and brain challenged with bolus feeding during anemia and after transfusion using near-infrared spectroscopy. DESIGN, SETTING, AND PARTICIPANTS This prospective cohort study conducted from September 1, 2014, to November 30, 2016, at a tertiary neonatal intensive care unit included 25 hemodynamically stable infants with gestational age less than 32 weeks, birth weight less than 1500 g, and postmenstrual age younger than 37 weeks. Data analysis was performed from August 1, 2017, to October 31, 2018. EXPOSURES Infants received PRBCT (15 mL/kg for 4 hours) and at least 120 mL/kg daily of second hourly bolus feedings. MAIN OUTCOMES AND MEASURES Splanchnic fractional tissue oxygen extraction (FTOEs) and cerebral fractional tissue oxygen extraction (FTOEc) measures were made during 75-minute feeding cycles that comprised a 15-minute preprandial feeding phase (FP0) and 4 contiguous 15-minute postprandial feeding phases (FP1, FP2, FP3, and FP4; each 15 minutes long). The intraindividual comparisons of feeding-related changes were evaluated during the pretransfusion epoch (TE0: 4 hours before onset of transfusion) and 3 TEs after transfusion (TE1: first 8 hours after PRBCT completion; TE2: 9-16 hours after PRBCT completion; and TE3: 17-24 hours after PRBCT completion). RESULTS Of 25 enrolled infants (13 [52%] female; median birth weight, 949 g [interquartile range {IQR}, 780-1100 g]; median gestational age, 26.9 weeks [IQR, 25.9-28.6 weeks]; median enrollment weight, 1670 g [IQR, 1357-1937 g]; and median postmenstrual age, 34 weeks [IQR, 32.9-35 weeks]), 1 infant was excluded because of corrupted near-infrared spectroscopy data. No overall association was found between FTOEs and FPs in a multivariable repeated-measures model that accounted for transfusion epochs (primary analysis approach) (FP0: mean estimate, 11.64; 95% CI, 9.55-13.73; FP1: mean estimate, 12.02; 95% CI, 9.92-14.11; FP2: mean estimate, 12.77; 95% CI, 10.68-14.87; FP3: mean estimate, 12.54; 95% CI, 10.45-14.64; FP4: mean estimate, 12.98; 95% CI, 10.89-15.08; P = .16 for the FP association). However exploratory analyses of postprandial changes in FTOEs undertaken for each transfusion epoch separately found evidence of increased postprandial FTOEs during TE1 (mean [SD] FTOEs, 10.55 [5.5] at FP0 vs 13.21 [5.96] at FP4, P = .046). The primary and exploratory analyses found no association between FTOEc and feeding phases, suggesting that cerebral oxygenation may be protected. CONCLUSIONS AND RELEVANCE The findings suggest that enteral feeding may be associated with gut ischemia and potentially transfusion-associated necrotizing enterocolitis. The postprandial changes in FTOEs appear to warrant further investigation in larger randomized studies.
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Affiliation(s)
- Kiran Kumar Balegar V
- Department of Neonatology, Sydney Medical School Nepean, Nepean Hospital, The University of Sydney, Kingswood, Australia
- The Charles Perkins Center, The University of Sydney, Sydney, Australia
| | - Madhuka Jayawardhana
- School of Biomedical Engineering, The University of Sydney, Sydney, Australia
- The Charles Perkins Center, The University of Sydney, Sydney, Australia
| | - Andrew J. Martin
- NHMRC Clinical Trials Centre, The University of Sydney, Camperdown, Australia
| | - Philip de Chazal
- School of Biomedical Engineering, The University of Sydney, Sydney, Australia
- The Charles Perkins Center, The University of Sydney, Sydney, Australia
| | - Ralph K. H. Nanan
- The Charles Perkins Center, The University of Sydney, Sydney, Australia
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Bozkurt O, Alyamac Dizdar E, Bidev D, Sari FN, Uras N, Oguz SS. Prolonged minimal enteral nutrition versus early feeding advancements in preterm infants with birth weight ≤1250 g: a prospective randomized trial. J Matern Fetal Neonatal Med 2020; 35:341-347. [PMID: 31994953 DOI: 10.1080/14767058.2020.1716723] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Objective: To determine the effect of two different feeding strategies on time to achieve full enteral feeding and the incidence of feeding intolerance in preterm infants with birth weight ≤1250 g.Methods: A prospective randomized trial (NCT02913677) conducted at a tertiary level neonatal intensive care unit. Preterm infants with birth weight ≤1250 g were randomly allocated to either prolonged minimal enteral nutrition (MEN) in which feed volumes were not increased for five days or early feeding advancement groups in which feed volumes were advanced by 20-25 ml/kg/d until 150 ml/kg/d feed volume was achieved. The primary outcomes were time to reach full enteral feeding sustained for 72 h and incidence of feeding intolerance.Results: A total of 199 infants (99 in prolonged MEN and 100 in early feeding advancement groups) were involved in the study. No statistically significant differences were observed in time to achieve full enteral feeding and feeding intolerance. Daily weight gain (19 versus 16 g; p < .001) was significantly higher in prolonged MEN group. There were no significant differences in weight percentiles and z-scores at discharge. Duration of hospitalization was comparable between the groups. The overall incidence of late onset sepsis and culture proven sepsis was similar in both groups (p = .92 and p = .22, respectively). Incidence of necrotizing enterocolitis (NEC) was 5% in early feeding advancement group, whereas no case of NEC was observed in prolonged MEN group (p = .06).Conclusions: Prolonged MEN is not associated with a delay in time to achieve full enteral feedings. It may even provide an advantage for development of NEC in extremely low birth weight infants.Trial registration: Clinical Trials.gov: NCT02913677.
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Affiliation(s)
- Ozlem Bozkurt
- Department of Neonatology, Zekai Tahir Burak Maternity Teaching Hospital, Ankara, Turkey
| | - Evrim Alyamac Dizdar
- Department of Neonatology, Zekai Tahir Burak Maternity Teaching Hospital, Ankara, Turkey
| | - Duygu Bidev
- Department of Neonatology, Zekai Tahir Burak Maternity Teaching Hospital, Ankara, Turkey
| | - Fatma Nur Sari
- Department of Neonatology, Zekai Tahir Burak Maternity Teaching Hospital, Ankara, Turkey
| | - Nurdan Uras
- Department of Neonatology, Zekai Tahir Burak Maternity Teaching Hospital, Ankara, Turkey
| | - Serife Suna Oguz
- Department of Neonatology, Zekai Tahir Burak Maternity Teaching Hospital, Ankara, Turkey
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