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Updated: Jun 23, 2026

A Model to Simulate Clinically Relevant Hypoxia in Humans

A Model to Simulate Clinically Relevant Hypoxia in Humans

Published on: December 22, 2016

Continuous oxygen therapy for the chronically hypoxemic patient.

D Georgopoulos¹, N R Anthonisen

¹Department of Medicine, University of Manitoba, Winnipeg, Canada.

Annual Review of Medicine

|January 1, 1990

Summary

Long-term continuous oxygen (O2) therapy significantly improves survival and quality of life for chronically hypoxemic patients. This therapy, administered for at least 19 hours daily, effectively prevents low oxygen levels during sleep and exercise.

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Published on: December 5, 2025

Area of Science:

Pulmonary Medicine
Respiratory Therapy

Background:

Long-term continuous oxygen (O2) therapy is crucial for improving survival and quality of life in chronically hypoxemic patients.
The precise mechanisms underlying O2's benefits are not fully understood, suggesting multifactorial involvement.

Purpose of the Study:

To review the established effects and recommended parameters for long-term continuous O2 therapy in stable hypoxemic patients.
To highlight the importance of adequate dosage and duration for therapeutic efficacy.

Main Methods:

Review of established clinical practices and guidelines for long-term O2 therapy.
Emphasis on patient selection criteria for continuous O2 administration.

Main Results:

Continuous O2 therapy, administered for at least 19 hours daily, is recommended for patients with stable hypoxemia.
Therapy should maintain arterial PO2 levels between 65-80 mm Hg.
Nasal prongs are the standard delivery method, with portable systems allowing patient mobility.

Conclusions:

Long-term continuous O2 therapy is a cornerstone treatment for improving outcomes in hypoxemic individuals.
Adequate oxygenation, duration of therapy, and delivery methods are key to maximizing patient benefits and quality of life.