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Related Concept Videos

Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure01:16

Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure

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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,...
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Hypoxia01:23

Hypoxia

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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...
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Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen01:16

Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen

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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,...
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Pneumothorax-I01:26

Pneumothorax-I

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A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
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Hyperpnea and Hyperventilation01:25

Hyperpnea and Hyperventilation

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Hyperventilation refers to a higher-than-normal rate and depth of breathing, often associated with anxiety attacks. This excessive breathing surpasses the body's need to expel CO2, leading to a condition known as hypocapnia - an unusually low level of carbon dioxide in the blood. Hypocapnia can constrict cerebral blood vessels, reducing blood flow to the brain, which may result in dizziness or fainting. Early signs include tingling and muscle spasms in the hands and face, caused by falling...
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Respiratory Assessment: Purpose and Indications01:19

Respiratory Assessment: Purpose and Indications

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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...
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Updated: Apr 18, 2026

Preoxygenation Techniques for Tracheal Intubation in Critically Ill Adults Utilizing Oxygen Mask and Noninvasive Ventilation
07:15

Preoxygenation Techniques for Tracheal Intubation in Critically Ill Adults Utilizing Oxygen Mask and Noninvasive Ventilation

Published on: December 5, 2025

754

Unestablished indications for hyperbaric oxygen therapy.

Simon J Mitchell1, Michael H Bennett2

  • 1Consultant anaesthetist and hyperbaric physician at Auckland City Hospital. He is the Head of the Department of Anaesthesiology at the University of Auckland, Department of Anaesthesiology, School of Medicine, University of Auckland Private Bag 92019, Auckland, New Zealand,

Diving and Hyperbaric Medicine
|January 19, 2015
PubMed
Summary
This summary is machine-generated.

Hyperbaric oxygen therapy (HBOT) shows no proven benefit for chronic brain injuries, despite claims. Sham treatments in studies suggest placebo effects, not genuine HBOT efficacy, are responsible for perceived improvements.

Keywords:
Hyperbaric oxygen therapycentral nervous systemchildrenethicsevidencehyperbaric researchreview articletrauma and stress

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Area of Science:

  • Hyperbaric medicine
  • Neurology
  • Clinical trial methodology

Background:

  • Unestablished indications for hyperbaric oxygen treatment (HBOT) lack adequate proof of benefit.
  • Ethical concerns arise from HBOT use in unproven conditions, including misleading information and false hope.
  • Chronic brain injuries, such as cerebral palsy and mild traumatic brain injury sequelae, are contemporary areas of concern.

Purpose of the Study:

  • To evaluate the efficacy of HBOT in unestablished indications, specifically chronic brain injuries.
  • To analyze the impact of placebo and participation effects in HBOT clinical trials.
  • To address ethical considerations regarding the systematic use of HBOT for unproven conditions.

Main Methods:

  • Review of multiple randomized, blinded, sham-controlled trials of HBOT for chronic brain injuries.
  • Comparison of outcomes between HBOT and sham control groups.
  • Analysis of arguments regarding the efficacy of sham treatments and pressure differentials.

Main Results:

  • No studies demonstrated a benefit of HBOT over sham control in chronic brain injury.
  • Both HBOT and sham groups showed improvements, indicating significant placebo or participation effects.
  • Arguments for sham treatments being active or pressure differentials being independently beneficial lack strong biological evidence.

Conclusions:

  • Chronic brain injuries remain unestablished indications for HBOT.
  • Systematic treatment of chronic brain injuries with HBOT is not supported by current evidence.
  • The perceived efficacy of HBOT in these conditions is likely due to placebo effects, not the therapy itself.