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Related Concept Videos

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...
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...
Traumatic Brain Injury l: Introduction01:28

Traumatic Brain Injury l: Introduction

DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...
Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
Increased Intracranial Pressure l: Introduction01:14

Increased Intracranial Pressure l: Introduction

Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...

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Related Experiment Video

Updated: Jul 13, 2026

Massive Pontine Hemorrhage by Dual Injection of Autologous Blood
06:33

Massive Pontine Hemorrhage by Dual Injection of Autologous Blood

Published on: May 29, 2021

[Type B intramural hematoma rupture].

Satomi Inoue1, A Yamauchi, A Tabata

  • 1Department of Cardiovascular and Thoracic Surgery, Hokkaido Prefectural Kitami Hospital, Kitami, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery
|July 24, 2007
PubMed
Summary

A rare type B aortic intramural hematoma rupture in a 70-year-old male was successfully treated with emergency arch replacement and open-stent repair. Transesophageal echocardiography aided in precise stent-graft placement for optimal recovery.

Related Experiment Videos

Last Updated: Jul 13, 2026

Massive Pontine Hemorrhage by Dual Injection of Autologous Blood
06:33

Massive Pontine Hemorrhage by Dual Injection of Autologous Blood

Published on: May 29, 2021

Area of Science:

  • Cardiovascular Surgery
  • Vascular Medicine
  • Diagnostic Imaging

Background:

  • Type B intramural hematoma rupture is a rare but serious aortic condition.
  • Sudden chest pain and sweating are key presenting symptoms requiring urgent evaluation.

Observation:

  • A 70-year-old male presented with acute chest pain and diaphoresis, diagnosed with type B intramural hematoma rupture.
  • Emergency surgical intervention involved aortic arch replacement and an open-stent technique.

Findings:

  • The patient underwent successful emergency repair with satisfactory post-operative recovery and discharge.
  • Transesophageal echocardiography proved crucial for accurate diagnosis and determining optimal stent-graft depth.

Implications:

  • This case highlights the effectiveness of surgical repair for type B aortic intramural hematoma rupture.
  • Transesophageal echocardiography is a valuable tool for managing complex aortic pathologies, guiding precise endovascular interventions.