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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...
Local Anesthetics: Clinical Application as Epidural Anesthesia01:29

Local Anesthetics: Clinical Application as Epidural Anesthesia

Epidural anesthetics are administered in the fat-filled epidural space, the outermost part of the spinal canal. This technique is commonly employed for pain management and anesthesia during lower abdomen and pelvis surgeries or labor and delivery.
Since epidural anesthetics can be infused through an epidural catheter, all types of drugs, including short-acting ones, can be administered. Chloroprocaine and lidocaine are examples of short and long-duration anesthetics, respectively. Bupivacaine...
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 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 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...
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...

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Related Experiment Video

Updated: May 17, 2026

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation
09:01

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation

Published on: October 15, 2021

Postoperative extradural hematomas.

Angelo Pichierri1, Andrea Ruggeri, Pasquale Donnarumma

  • 1Division of Neurosurgery, Department of Neurological Sciences, Sapienza Univsersity of Rome, Rome, Italy. angelopichierri@gmail.com

Journal of Neurological Surgery. Part A, Central European Neurosurgery
|November 10, 2012
PubMed
Summary
This summary is machine-generated.

Postoperative extradural hematoma (POEH) is a rare complication after head surgery. This study identified two subtypes, guiding treatment decisions based on clinical presentation and imaging.

Related Experiment Videos

Last Updated: May 17, 2026

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation
09:01

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation

Published on: October 15, 2021

Area of Science:

  • Neurosurgery
  • Neurology
  • Medical Complications

Background:

  • Postoperative extradural hematoma (POEH) is an infrequent complication following cranial surgery.
  • Existing literature often overlooks POEH, necessitating further investigation into its characteristics and management.

Purpose of the Study:

  • To investigate the incidence and characteristics of POEH.
  • To differentiate between subtypes of POEH and establish management guidelines.

Main Methods:

  • Retrospective analysis of a single surgeon's experience with head surgeries.
  • Classification of POEH cases into two subtypes based on hematoma volume and clinical presentation.
  • Evaluation of radiological features and treatment outcomes.

Main Results:

  • Identified 13 cases of POEH, representing 0.8% of surgeries.
  • Distinguished two subtypes: larger hematomas (>40 cc) requiring evacuation and smaller (<40 cc) hematomas with insidious onset.
  • Observed distinct radiological features in smaller POEH compared to traumatic/spontaneous extradural hematomas.

Conclusions:

  • POEH presents with varied clinical and radiological features.
  • Treatment decisions for smaller POEH (Type II) should be guided by clinical presentation and imaging findings.
  • Further research is warranted to fully understand POEH pathogenesis and optimize management strategies.