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Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
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Hemorrhagic Stroke l: Introduction01:17

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A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...

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Related Experiment Video

Updated: Jun 19, 2026

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats
04:12

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats

Published on: March 28, 2025

COL4A1 mutation in preterm intraventricular hemorrhage.

Kaya Bilguvar1, Michael L DiLuna, Matthew J Bizzarro

  • 1Department of Neurosurgery, Yale University School of Medicine, New Haven, CT 06520, USA.

The Journal of Pediatrics
|October 21, 2009
PubMed
Summary

A rare COL4A1 gene variant caused intraventricular hemorrhage in preterm twins. This finding expands the known genetic causes of brain bleeds in premature infants, highlighting type IV procollagen mutations.

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Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin
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Published on: August 25, 2022

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Last Updated: Jun 19, 2026

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats
04:12

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats

Published on: March 28, 2025

Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin
07:57

Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin

Published on: August 25, 2022

Area of Science:

  • Genetics
  • Neonatal Medicine
  • Neurology

Background:

  • Intraventricular hemorrhage (IVH) is a frequent complication in preterm infants.
  • Mutations in the type IV procollagen gene (COL4A1) are linked to cerebral small vessel disease with hemorrhage in adults and fetuses.

Observation:

  • We describe a rare COL4A1 variant identified in dizygotic preterm twins.
  • Both twins presented with intraventricular hemorrhage.

Findings:

  • The identified COL4A1 variant is associated with intraventricular hemorrhage in preterm twins.
  • This case suggests a potential genetic link between COL4A1 mutations and IVH in neonates.

Implications:

  • This discovery broadens the spectrum of conditions linked to type IV procollagen gene mutations.
  • Further research into COL4A1 and neonatal IVH may reveal new diagnostic and therapeutic targets.