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Related Concept Videos

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...
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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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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,...
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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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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...
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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 9, 2026

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

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

Published on: June 18, 2021

Postdural puncture headache.

Ahmed Ghaleb1

  • 1Department of Anesthesiology, University of Arkansas for Medical Sciences, 4301 West Markham, Slot 515, Little Rock, AR 72205, USA.

Anesthesiology Research and Practice
|September 4, 2010
PubMed
Summary
This summary is machine-generated.

Postdural puncture headache (PDPH) risk is reduced with small-gauge, pencil-point needles. Epidural blood patches are effective for high-risk patients, with rare complications.

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Area of Science:

  • Anesthesiology
  • Neurology

Background:

  • Postdural puncture headache (PDPH) has been a recognized complication since 1898.
  • PDPH results from cerebrospinal fluid (CSF) leakage after dural puncture, causing low-pressure headaches.
  • Needle design significantly impacts PDPH incidence.

Purpose of the Study:

  • To review the pathophysiology and management of PDPH.
  • To highlight risk factors and preventative strategies for PDPH.
  • To discuss the efficacy and safety of epidural blood patch (EBP) for PDPH treatment.

Main Methods:

  • Review of historical and contemporary clinical and laboratory research on PDPH.
  • Analysis of needle characteristics (gauge, tip design) and their association with PDPH risk.
  • Evaluation of diagnostic criteria, including the hallmark postural headache.
  • Assessment of epidural blood patch (EBP) as a therapeutic intervention.

Main Results:

  • Small-gauge, pencil-point needles are associated with a lower risk of PDPH compared to traditional cutting-point needles.
  • A postural headache component is the defining characteristic of PDPH.
  • Epidural blood patch (EBP) is recommended for high-risk patients (e.g., <50 years, postpartum, large-gauge needle use) within 24-48 hours.
  • The optimal EBP volume for adults is 12-20 mL, with rare complications.

Conclusions:

  • Minimizing dural puncture trauma with appropriate needle selection is key to PDPH prevention.
  • Early and appropriate intervention with epidural blood patch (EBP) is effective for managing PDPH in high-risk individuals.
  • Epidural blood patch (EBP) is a safe and effective treatment for postdural puncture headache (PDPH).