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Massive Hemoptysis 

Massive Hemoptysis
Chapter:
Massive Hemoptysis
Author(s):

Mazen O. Al-Qadi

and Mark E. Wylam

DOI:
10.1093/med/9780190464813.003.0012
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date: 14 October 2019

Massive hemoptysis is a life-threatening condition that accounts for 5% to 10% of all cases of hemoptysis. Although rapid bleeding of 100 to 200 mL of blood (equivalent to the anatomical dead space) can compromise upper airways and impair gas exchange, expectoration of more than 600 mL of blood in 24 hours is the commonly used definition of massive hemoptysis. This definition, however, does not account for important clinical variables such as the patient’s ability to maintain the airway patency, the rate of bleeding, and the presence of cardiopulmonary comorbidities.

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