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Related Concept Videos

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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 5, 2026

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation
09:01

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation

Published on: October 15, 2021

[Intraorbital haematoma while scuba diving--a case report].

J Bianda1, G von Arx, K Chaloupka

  • 1Augenklinik, Universitätsspital Zürich, Zürich, Schweiz.

Klinische Monatsblatter Fur Augenheilkunde
|May 6, 2008
PubMed
Summary

Scuba diving can rarely cause intraorbital hematoma due to barotrauma. A case report details a retrobulbar hemorrhage in a diver with Eustachian tube issues, highlighting the need to rule out vascular anomalies.

Area of Science:

  • Ophthalmology
  • Diving Medicine
  • Radiology

Background:

  • Intraorbital hematoma is an uncommon consequence of barotrauma during scuba diving.
  • This case report focuses on a specific instance of retrobulbar hemorrhage linked to diving activities.

Observation:

  • A 36-year-old female diver experienced left eyelid swelling after descending to 10 meters.
  • Imaging revealed a retrobulbar intraconal hemorrhage in the left orbit.
  • The patient had pre-existing fibrous constrictions of the Eustachian tubes, impeding nasopharyngeal decompression.

Findings:

  • Computed Tomography (CT) and Magnetic Resonance (MR) imaging confirmed the retrobulbar hemorrhage.
  • Angiography performed three months post-incident did not identify any intracranial vascular anomalies.

Related Experiment Videos

Last Updated: Jul 5, 2026

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation
09:01

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation

Published on: October 15, 2021

  • The patient recovered without residual complaints.
  • Implications:

    • Exclusion of underlying cerebrovascular anomalies is crucial to prevent recurrence of retrobulbar hemorrhage.
    • Eustachian tube dysfunction may represent a complicating risk factor in scuba diving-related barotrauma.
    • Further investigation into the relationship between diving, barotrauma, and orbital hemorrhage is warranted.