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Updated: May 17, 2026

Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin
Published on: August 25, 2022
Periventricular hemorrhage: a problem still today
1University of Bristol, Bristol, United Kingdom. andrew.whitelaw@bristol.ac.uk
Insights
Periventricular hemorrhage (PVH) in premature infants is reduced by antenatal corticosteroids and improved care. Further research is needed to prevent long-term disability from PVH and its complications.
Area of Science:
- Neonatal neurology
- Perinatal medicine
- Pediatric critical care
Background:
- Periventricular hemorrhage (PVH) affects very premature infants due to fragile blood vessels and unstable circulation.
- Antenatal corticosteroids have significantly decreased PVH incidence.
- Improved neonatal care, including cardio-respiratory stabilization and avoidance of hypoxia/trauma, also contributes to reduced PVH.
Purpose of the Study:
- To review current understanding and management of PVH in premature infants.
- To identify factors contributing to PVH and its long-term consequences.
- To highlight areas for future research to improve outcomes.
Main Methods:
- Review of existing literature on PVH and its management.
- Analysis of factors influencing PVH incidence and severity.
- Discussion of current treatment strategies and their limitations.
Main Results:
- Antenatal corticosteroids are effective in reducing PVH.
- Increased survival of extremely premature infants leads to a higher number of severe PVH cases annually.
- Delayed cord clamping may further reduce PVH.
- Medications for PVH exist but lack widespread adoption due to unproven disability reduction.
- Posthemorrhagic ventricular dilatation (PHVD) and parenchymal hemorrhagic infarction significantly increase disability.
Conclusions:
- While PVH incidence has decreased, severe cases persist, particularly in extremely premature infants.
- Current treatments for PHVD focus on pressure and distortion avoidance.
- Further research is crucial to investigate novel therapeutic approaches, including seizure management, blood removal, and anti-inflammatory/antioxidant strategies, to improve long-term prognosis.
Abstract:
Periventricular hemorrhage (PVH) is the result of "temporary" fragile blood vessels and unstable circulation in the brain of very premature infants. Antenatal corticosteroids have substantially reduced PVH. Avoidance of intrapartum hypoxia and birth trauma has probably helped as has better cardio-respiratory stabilization after delivery. Increased survival of the highest risk infants under 26weeks gestation means that there are probably 800-900 infants with severe PVH annually in the UK. Delayed cord clamping could probably reduce PVH further. Various medications can reduce PVH but have not been widely adopted as the imaging has not translated into reduced disability. Posthemorrhagic ventricular dilatation (PHVD) and parenchymal hemorrhagic infarction both greatly increase disability. Treatment of PHVD is based on avoiding pressure and gross distortion of the vulnerable white matter. Further research needs to investigate whether treating subtle seizures, removing blood or blocking free radicals or inflammation will improve prognosis.
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