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Chapter-44 Atelectasis of Lungs

BOOK TITLE: Manual of Respiratory Medicine

Author
1. Hira Harmanjit Singh
ISBN
9788184484366
DOI
10.5005/jp/books/10485_44
Edition
1/e
Publishing Year
2008
Pages
11
Author Affiliations
1. Maulana Azad Medical College, Lok Nayak and GB Pant Hospitals, New Delhi, India, Respiratory ICU and Sleep Centre, Maulana Azad Medical College and Associated LN and GB Pant Hospitals, New Delhi, Maulana Azad Medical College and Associated Hospitals, New Delhi, India, Maulana Azad Medical College and Associated Hospitals New Delhi, India
Chapter keywords

Abstract

Respiratory failure is a syndrome in which the respiratory system fails in one or both of its gas exchange functions: oxygenation and carbon dioxide elimination. In practice, respiratory failure is defined as a PaO2 value of less than 60 mm Hg while breathing air or a PaCO2 of more than 50 mm Hg. Furthermore, respiratory failure may be acute or chronic. While acute respiratory failure is characterized by life-threatening derangements in arterial blood gases and acid-base status, the manifestations of chronic respiratory failure are less dramatic and may not be as readily apparent. Respiratory failure may be classified as hypoxemic or hypercapnic and may be either acute or chronic. Hypoxemia is the major immediate threat to organ function. Therefore, the first objective in the management of respiratory failure is to reverse and/or prevent tissue hypoxia.

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