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Interventions to Prevent Intraventricular Haemorrhage in Preterm Neonates: An Umbrella Review of Systematic Reviews
Mayuri Bhanushali1, Haribalakrishna Balasubramanian2, Hemant Sharma1
1Department of Neonatology, Surya Children's Hospital, Mumbai, India.
Insights
Administering antenatal corticosteroids and magnesium sulfate, along with early lung protective strategies, significantly reduces severe intraventricular hemorrhage (IVH) in preterm infants. Further research on IVH care bundles is recommended.
Area of Science:
- Neonatal Medicine
- Perinatal Health
- Evidence Synthesis
Background:
- Intraventricular hemorrhage (IVH) is a significant concern in preterm infants.
- Systematic reviews are crucial for synthesizing evidence on interventions to reduce IVH.
- Identifying effective perinatal and neonatal interventions is essential for improving preterm infant outcomes.
Purpose of the Study:
- To provide an overview of systematic reviews evaluating randomized controlled trials (RCTs) of perinatal/neonatal interventions for reducing IVH in preterm infants.
- To synthesize evidence on the effectiveness of various interventions based on high-quality systematic reviews.
- To assess the certainty of evidence for interventions aimed at preventing IVH.
Main Methods:
- Comprehensive search of major databases (PubMed, EMBASE, Cochrane) for systematic reviews and meta-analyses of RCTs.
- Inclusion of studies on preterm infants or those at risk of preterm birth, focusing on IVH outcomes.
- Quality assessment of systematic reviews using AMSTAR 2 and certainty of evidence using GRADE recommendations.
- Meta-analysis of outcome data using the Metaumbrella package in R software.
Main Results:
- 148 systematic reviews were included, with 118 focusing on postnatal interventions.
- Antenatal corticosteroids, magnesium sulfate, volume-targeted ventilation, early surfactant administration, and prophylactic indomethacin significantly reduced severe IVH (moderate certainty of evidence).
- Respiratory function monitors, heated humidified respiratory gases, and early erythropoietin supplementation showed potential benefits (very low certainty of evidence).
Conclusions:
- Antenatal steroids, magnesium sulfate, and early neonatal lung-protective strategies are effective in reducing IVH rates in preterm neonates.
- High-quality systematic reviews indicate moderate certainty of evidence for several key interventions.
- Further adequately powered RCTs are needed to evaluate IVH care bundles with long-term follow-up.
Introduction:
Intraventricular haemorrhage (IVH) leads to significant morbidity among preterm infants. We conducted an overview of systematic reviews of RCTs assessing the effects of perinatal/neonatal interventions in reducing IVH among preterm infants.
Methods:
PubMed, Embase, Cochrane database for systematic reviews, and systematic review repositories were searched for meta-analyses of RCTs involving preterm infants or women at high risk of preterm birth and reporting on IVH. Metaumbrella package of R software was used to pool outcome data for each intervention. Quality of the systematic reviews was assessed using AMSTAR 2 tool. Certainty of evidence (COE) was reported using GRADE recommendations.
Results:
A total of 148 systematic reviews (110 Cochrane vs. 38 non-Cochrane) were included. Postnatal interventions were reported in 118 reviews. Severe IVH was reported in 100/148 reviews that included 39,483 infants and 20,400 antenatal women. In total, 78% (n = 116) of the reviews were rated high or moderate quality on AMSTAR-2 assessment. Antenatal corticosteroids and magnesium sulphate for imminent preterm birth, volume-targeted ventilation, early rescue surfactant administration through thin catheter, prophylactic indomethacin significantly reduced the rates of severe IVH (moderate COE). Use of respiratory function monitors and heated humidified respiratory gases in the delivery room and early prophylactic erythropoietin supplementation for preterm infants may reduce the rates of severe IVH (very low COE).
Discussion:
Antenatal steroids and magnesium sulphate administration and early neonatal lung protective strategies reduce the rates of IVH in preterm neonates. Adequately powered RCTs evaluating IVH care bundles with long-term follow-up are required.
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