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Editor's Correspondence
March 25, 2002

Does Anticoagulant Therapy Reduce Mortality of Acute Pulmonary Embolism?—Reply

Author Affiliations

Copyright 2002 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2002

Arch Intern Med. 2002;162(6):720. doi:

In reply

The article by David Cundiff appeared in the "Comments, Opinions, and Brief Case Reports" section of the ARCHIVES. It presented his opinion, and thus a "counterbalancing editorial comment" would not have been appropriate.

His main point was that the only placebo-controlled randomized trial of heparin followed by oral anticoagulant therapy for acute pulmonary embolism was reported by Barritt and Jordan in 1960.1 Their study was underpowered and was "flawed" by current standards. The main evidence that anticoagulant therapy benefits patients with acute pulmonary embolism derives from comparing the mortality of untreated pulmonary embolism, approximately 30%,2 with the mortality of patients treated with heparin and oral anticoagulants, less than 5%.3 It is unlikely that further placebo-controlled randomized clinical trials will be performed.

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