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Pathophysiology of acute respiratory failure
1Division of Pulmonary Diseases/Critical Care Medicine, University of Texas Health Science Center, San Antonio.
Clinics in Chest Medicine
|March 1, 1994
Summary
Respiratory failure occurs when the body cannot deliver adequate oxygen or remove excess carbon dioxide. This article reviews the physiology of gas exchange and the causes of respiratory failure.
Area of Science:
- Pulmonary Medicine
- Physiology
Background:
- Respiratory failure is defined as the inability to maintain normal oxygen delivery or carbon dioxide removal.
- It involves impaired pulmonary gas exchange, affecting tissue oxygenation and CO2 clearance.
Purpose of the Study:
- To provide an overview of normal pulmonary gas exchange physiology.
- To explain the pathophysiology leading to respiratory failure.
Main Methods:
- Review of normal respiratory physiology.
- Analysis of mechanisms causing respiratory failure.
Main Results:
- Gas exchange involves oxygen transfer, tissue transport via cardiac output, and carbon dioxide removal.
- Failure at any stage can result in respiratory failure.
Conclusions:
- Understanding normal gas exchange is crucial for diagnosing respiratory failure.
- Pathophysiology highlights multiple potential points of failure in respiratory function.