# Intraventricular Haemorrhage in Preterm Infants > Intraventricular haemorrhage in preterm infants for NEET-PG Paediatrics covering germinal matrix origin, Papile grading and cranial ultrasound screening. - Canonical URL: https://prepelephant.com/topics/neet-pg/paediatrics/intraventricular-haemorrhage-in-preterm-infants - Exam / course: NEET-PG · Subject: Paediatrics - Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team - First published: 2026-10-14 - Last updated: 2026-10-14 - Reference basis: Nelson Textbook of Pediatrics; Avery's Diseases of the Newborn; Cloherty and Stark's Manual of Neonatal Care - How to cite: "Intraventricular Haemorrhage in Preterm Infants", PrepElephant, https://prepelephant.com/topics/neet-pg/paediatrics/intraventricular-haemorrhage-in-preterm-infants ## Direct answer Intraventricular haemorrhage is bleeding into the ventricles of the brain, arising from the fragile germinal matrix, and it occurs mainly in preterm infants during the first few days of life. The Papile grading on cranial ultrasound classifies it from grade I to grade IV, and grades III and IV carry the greatest risk of hydrocephalus and neurodevelopmental impairment. Cranial ultrasound screening of high-risk preterm babies picks these bleeds up early. ## What you must remember - **Site of origin:** the germinal matrix, a highly vascular zone beneath the ependyma, which regresses by about 34 to 36 weeks of gestation. - **Timing:** most bleeds occur within the first 72 hours of life, when the vessels are most fragile. - **Risk factors:** low gestational age and low birth weight, ventilation with fluctuating blood pressure, hypotension, hypercarbia and rapid volume expansion. - **Papile grading:** grade I is germinal matrix or subependymal bleeding alone; grade II is intraventricular blood without ventricular dilatation; grade III adds ventricular dilatation; grade IV is intraparenchymal extension. - **Screening:** cranial ultrasound through the open anterior fontanelle, usually offered to infants born before about 30 weeks or weighing under 1500 g, repeated per unit protocol. - **Sequelae:** posthaemorrhagic ventricular dilatation, cerebral palsy, developmental delay and learning difficulties, with the risk rising with the grade. - **Prevention:** antenatal corticosteroids, delayed cord clamping and a gentle handling approach that avoids sudden swings in cerebral blood flow. ## From fragile vessels to long-term outcome Intraventricular haemorrhage follows a predictable sequence from the fragile vessel to the long-term outcome. Stems often describe the mechanism first and then ask about the grade, so students should be able to walk through the steps in order. 1. **Fragile vessels:** The germinal matrix has thin-walled, poorly supported capillaries that are prone to rupture. 2. **Pressure surge:** Sudden rises in cerebral blood flow, often during intubation, suctioning or hypotension correction, can rupture these vessels. 3. **Bleeding:** Blood enters the ventricular system, where it may clot and block the flow of cerebrospinal fluid. 4. **Ultrasound grading:** Cranial ultrasound shows the site and extent of the bleed, which is the basis of the Papile grade. 5. **Ventricular dilatation:** Blood or debris can obstruct absorption, leading to posthaemorrhagic hydrocephalus that may need serial head measurements and neurosurgical drainage. 6. **Follow-up:** Surviving infants need developmental assessment, since the grade is a strong predictor of later motor and cognitive outcome. The grade is therefore only the first step, and the trajectory of the ventricles matters as much. ## Where the exam tries to catch you Stems about intraventricular haemorrhage usually test grading and the danger of a dilating ventricle. - **Trap:** labelling every intracranial bleed in a preterm baby as grade IV. — **Correct:** Papile grading depends on whether blood stays in the ventricle or extends into the parenchyma, and most bleeds are grades I and II. - **Trap:** treating a dilated ventricle as stable because the baby looks well. — **Correct:** posthaemorrhagic dilatation can progress, so serial cranial ultrasound and head circumference tracking are needed. - **Trap:** waiting for symptoms before imaging a high-risk preterm baby. — **Correct:** most early bleeds are silent, so screening is routine in high-risk infants. ## Frequently asked questions ### What is the Papile grading of intraventricular haemorrhage? Papile grading classifies intraventricular haemorrhage on cranial ultrasound from grade I to grade IV. Grade I is germinal matrix bleeding alone, grade II is intraventricular blood without ventricular dilatation, grade III adds ventricular dilatation, and grade IV means intraparenchymal extension. ### When does intraventricular haemorrhage usually occur in preterm infants? Intraventricular haemorrhage usually occurs within the first 72 hours of life in preterm infants. The risk is highest in babies born at very low gestation, and the fragile germinal matrix is the reason for this timing. ### Which imaging screens for intraventricular haemorrhage in preterm babies? Cranial ultrasound through the open anterior fontanelle is the screening test for intraventricular haemorrhage in preterm babies. It is bedside, repeatable and avoids transport, which suits high-risk neonates in the NICU. ### What is posthaemorrhagic hydrocephalus? Posthaemorrhagic hydrocephalus is ventricular dilatation that follows intraventricular haemorrhage, when blood or debris impairs cerebrospinal fluid absorption. It may need serial monitoring and neurosurgical drainage if the ventricles keep enlarging.