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Related Concept Videos

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...
Cerebral Edema l: Introduction01:19

Cerebral Edema l: Introduction

Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...
Increased Intracranial Pressure ll: Pathophysiology01:29

Increased Intracranial Pressure ll: Pathophysiology

Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...
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...
Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

Aneurysm II: Clinical Manifestations and Diagnostic Studies

Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...

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Related Experiment Video

Updated: May 8, 2026

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
14:59

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus

Published on: October 14, 2022

[Diagnostic difficulty for an acute hydrocephalus].

S Vico1, L Franck, M Bensalah

  • 1Service d'anesthésie-réanimation, hôpital d'instruction des armées du Val-de-Grâce, 74, boulevard de Port-Royal, 75230 Paris cedex 05, France.

Annales Francaises D'Anesthesie Et De Reanimation
|August 17, 2013
PubMed
Summary
This summary is machine-generated.

Diagnosing extrapulmonary tuberculosis, like acute neuromeningitis, is challenging due to atypical symptoms and negative initial tests. Early bacterial detection is crucial for effective treatment in suspected tuberculosis cases.

Keywords:
Acute hydrocephalusDiagnosisDiagnosticHydrocéphalie aiguëIntensive care unitMeningitisMéningiteRéanimationTuberculoseTuberculosis

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Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats
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Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats

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Related Experiment Videos

Last Updated: May 8, 2026

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
14:59

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus

Published on: October 14, 2022

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats
04:12

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats

Published on: March 28, 2025

Area of Science:

  • Neurology
  • Infectious Diseases
  • Microbiology

Background:

  • Extrapulmonary tuberculosis presents diagnostic challenges due to varied symptoms.
  • Neuromeningitis is a severe form of tuberculosis affecting the brain and spinal cord.
  • Timely diagnosis is critical for effective tuberculosis management.

Observation:

  • A case of fatal acute tuberculosis neuromeningitis is presented.
  • Diagnosis was hindered by negative initial bacteriological samples.
  • Treatment was initiated based on clinical suspicion but proved ineffective.

Findings:

  • The case highlights limitations in current diagnostic methods for suspected tuberculosis.
  • Bacteriological sample negativity can delay or prevent definitive diagnosis.
  • Aggressive diagnostic efforts are needed when tuberculosis is suspected.

Implications:

  • Challenges the efficacy of diagnostic and treatment protocols in emergency tuberculosis scenarios.
  • Emphasizes the need for persistent bacterial detection in high-risk patients.
  • Underscores the importance of early and accurate diagnosis for improved patient outcomes in tuberculosis.