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Related Concept Videos

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...
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

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...
Pneumothorax-I01:26

Pneumothorax-I

A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
Venous Thrombosis IV: Nursing Management01:30

Venous Thrombosis IV: Nursing Management

Nursing management begins with a thorough assessment of the patient's health history. Key factors include trauma to veins, peripherally inserted central catheters, varicose veins, recent pregnancy or childbirth, surgery, bacteremia, prolonged bed rest, atrial fibrillation, COPD, heart failure, cancer, coagulation disorders, myocardial infarction, spinal cord injury, stroke, prolonged travel, recent bone fractures, and dehydration. Review medication intake, particularly oral contraceptives,...

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Related Experiment Video

Updated: Jul 6, 2026

A Murine Model of Subarachnoid Hemorrhage
07:40

A Murine Model of Subarachnoid Hemorrhage

Published on: November 21, 2013

Life-threatening subcutaneous hematoma.

Bruce M Lo1, Kirsten N Pennell, Rebecca M Lipscomb

  • 1Department of Emergency Medicine, Eastern Virginia Medical School, Norfolk, VA 23507, USA. brucelo1@yahoo.com

The American Journal of Emergency Medicine
|April 16, 2008
PubMed
Summary
This summary is machine-generated.

Neurofibromatosis patients may experience severe bleeding from vascular malformations, even after minor injuries. This case highlights the potentially life-threatening nature of subcutaneous hemorrhages in individuals with this genetic disorder.

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Last Updated: Jul 6, 2026

A Murine Model of Subarachnoid Hemorrhage
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Published on: November 21, 2013

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
09:14

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Published on: June 18, 2021

Area of Science:

  • Genetics
  • Vascular Medicine
  • Dermatology

Background:

  • Neurofibromatosis is a rare genetic disorder characterized by tumor formation.
  • Vascular malformations are a known, though variable, clinical manifestation of neurofibromatosis.

Observation:

  • A patient with neurofibromatosis experienced massive subcutaneous hemorrhage following minor trauma.
  • The hemorrhage was severe and life-threatening.

Findings:

  • Subcutaneous vascular malformations in neurofibromatosis patients can lead to significant bleeding.
  • The severity of bleeding may not correlate with the apparent severity of the trauma.

Implications:

  • Physicians must maintain a high index of suspicion for serious bleeding complications in neurofibromatosis patients.
  • Prompt recognition and management of subcutaneous hemorrhages are crucial for patient outcomes.
  • This case underscores the importance of considering vascular anomalies in the differential diagnosis of unexplained bleeding in neurofibromatosis.