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Related Concept Videos

Hypoxia01:23

Hypoxia

Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure01:16

Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure

Oxygen therapy has emerged as a significant tool in enhancing the quality of life for patients suffering from pulmonary arterial hypertension (PAH). While this therapy has principally been studied on patients with significant hypoxemia, this therapeutic approach helps prevent potential organ damage and can be administered in the comfort of one's home.
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue, improving...
Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen01:16

Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen

Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
Respiratory Assessment: Purpose and Indications01:19

Respiratory Assessment: Purpose and Indications

Respiratory assessment is a cornerstone of nursing assessments, crucial for the early detection of patient deterioration. This evaluation transcends routine procedures, representing a critical skill nurses must master to ensure optimal patient care.
Objectives and Importance:
The primary goal of respiratory assessment is to evaluate patients at early risk of clinical deterioration. Since respiratory distress often precedes other signs of declining health, breathing patterns and sounds become a...
Oxygen Transport in the Blood01:27

Oxygen Transport in the Blood

Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is important. 

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Updated: May 26, 2026

Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice
09:29

Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice

Published on: June 11, 2020

Oxygen toxicity seizures: 20 years' experience from a single hyperbaric unit.

Neil Dg Banham1

  • 1Director, Hyperbaric Medicine Unit, Fremantle Hospital, PO Box 480 Fremantle, Western Australia, 6959, Phone: +61-(0)8-9431-2233, Fax: +61-(0)8-9431-2235,

Diving and Hyperbaric Medicine
|December 21, 2011
PubMed
Summary

Oxygen toxicity seizures (OTS) are a risk during hyperbaric oxygen therapy (HBOT). Higher pressures significantly increase the risk of OTS, highlighting the importance of careful pressure management during treatment.

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Last Updated: May 26, 2026

Continuous Video Electroencephalogram during Hypoxia-Ischemia in Neonatal Mice
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Published on: June 11, 2020

Oxygen-Glucose Deprivation and Reoxygenation as an In Vitro Ischemia-Reperfusion Injury Model for Studying Blood-Brain Barrier Dysfunction
08:56

Oxygen-Glucose Deprivation and Reoxygenation as an In Vitro Ischemia-Reperfusion Injury Model for Studying Blood-Brain Barrier Dysfunction

Published on: May 7, 2015

Area of Science:

  • Hyperbaric Medicine
  • Neurology
  • Patient Safety

Background:

  • Oxygen toxicity seizures (OTS) are a recognized complication of hyperbaric oxygen therapy (HBOT).
  • Reported incidence of OTS varies and is linked to exposure duration, pressure, and individual factors.

Purpose of the Study:

  • To review all OTS cases over a 20-year period at a single hyperbaric unit.
  • To analyze the incidence of OTS in relation to HBOT pressure and indications.

Main Methods:

  • Retrospective review of all OTS events in patients undergoing HBOT.
  • Data collected over 20 years of operation at the Fremantle Hospital Hyperbaric Medicine Unit.

Main Results:

  • 25 OTS occurred during 41,273 HBOT sessions (0.06% incidence).
  • Higher pressures showed a statistically significant increase in OTS rates (P < 0.001 at > 203 kPa).
  • Specific indications like dysbarism and carbon monoxide poisoning had varying OTS rates.

Conclusions:

  • This 20-year observational study provides a comprehensive analysis of OTS during HBOT.
  • The incidence of OTS in this study is comparable to previous reports.
  • An increasing incidence of OTS with increasing hyperbaric pressure was confirmed.