Related Experiment Video
Updated: Jun 19, 2025
Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin
Published on: August 25, 2022
Intervention at an early threshold for post-hemorrhagic ventricular dilatation in preterm infants: a systematic
Patrick Blundell1, Lloyd Abood2, Mallinath Chakraborty1,3
1Regional Neonatal Intensive Care Unit, University Hospital of Wales, Cardiff, UK.
Insights
Early intervention for post-hemorrhagic ventricular dilatation (PHVD) in preterm infants does not improve neurodevelopmental outcomes. This approach leads to more procedures without enhancing survival rates without impairment.
Area of Science:
- Neonatalogy
- Pediatric Neurology
- Clinical Intervention Studies
Background:
- Post-hemorrhagic ventricular dilatation (PHVD) is a serious complication in preterm infants.
- Optimal timing for intervention in PHVD remains debated, with potential neurodevelopmental implications.
- Existing studies lack sufficient power to establish clear benefits of early intervention thresholds.
Purpose of the Study:
- To conduct a meta-analysis evaluating the efficacy and safety of early versus conservative intervention thresholds for PHVD in preterm infants.
- To assess the impact of these thresholds on cerebrospinal fluid (CSF) pressure normalization.
- To determine neurodevelopmental outcomes at 12-30 months in infants undergoing different intervention strategies.
Main Methods:
- Systematic search of multiple databases for eligible prospective randomized trials.
- Inclusion criteria focused on preterm infants with PHVD and comparison of early versus conservative intervention thresholds.
- Meta-analysis of outcomes including survival without neurodevelopmental impairment, using relative risks (RRs) and 95% confidence intervals (CIs).
Main Results:
- Seven randomized trials (545 infants) found no significant difference in survival without moderate-to-severe neurodevelopmental impairment between early and conservative groups (RR 0.99).
- Infants in the early intervention group underwent significantly more procedures (RR 1.48).
- Rates of death before discharge or composite outcomes of death or shunt insertion were comparable between groups.
Conclusions:
- Early intervention for PHVD, preceding established clinical or ultrasound thresholds, increases clinical procedures without improving neurodevelopmental outcomes at 12-30 months.
- The findings suggest caution in implementing early intervention strategies solely based on pressure thresholds.
- Significant heterogeneity among studies necessitates careful interpretation of the results.
Background:
Very few adequately powered studies exploring early thresholds for intervention in the management of post-hemorrhagic ventricular dilatation (PHVD) in preterm infants have identified consistent neurodevelopmental advantages at 12-30 months. We aimed to conduct a meta-analysis on the efficacy and safety of early versus conservative thresholds for intervention, primarily aimed at normalizing cerebrospinal fluid (CSF) pressure, in the management of PHVD in preterm infants.
Methods:
Multiple databases were searched for eligible papers, and prospective randomized trials involving preterm infants were selected. The results are expressed as relative risks (RRs) with 95% confidence intervals (CIs). The main outcome was survival without moderate-to-severe neurodevelopmental impairment at 12-30 months.
Results:
Ten articles representing seven randomized trials comparing early versus conservative thresholds for interventions were included. Five trials (n = 545 infants) reported no difference in the main outcome between early and conservative groups [RR 0.99 (0.71, 1.37)]. Sensitivity analysis excluding data from a medication trial did not alter the main outcome [RR 1.15 (0.95, 1.39)]. Infants in the early threshold group received significantly more interventions [RR 1.48 (1.05, 2.09)]. Deaths before discharge/during the initial study period [RR 1.04 (0.70, 1.54)] or a composite of death or shunt insertion [RR 1.04 (0.86, 1.27)] were comparable between the two groups.
Conclusions:
Early intervention for PHVD, before a clinical or ultrasound threshold is met, leads to additional clinical procedures but does not improve survival without moderate-severe neurodevelopmental impairment at 12-30 months. Caution should be exercised in interpreting these results due to significant variation between the studies. Supplementary file 3 (MP4 131172 kb).
