James F. Morris, MD; Gerbail T. Krishnamurthy, MD
To the editors: Hull and Raskob (1) urge a change in the way lung scans are interpreted (1). In their study, 23% (Biello criteria) or 25.5% (McNeil criteria) of patients with low-probability scans had angiographic evidence of pulmonary emboli. Of equal interest, 40.4% (Biello) or 38% (McNeil) of their patients with high-probability scans had no other evidence of pulmonary embolism. They urge a change in reporting low-probability ventilation-perfusion scans, but they offer no recommendations of their own.
Most agree that normal pulmonary angiograms and lung scans rule out significant pulmonary embolism, but as Kipper and colleagues (2) point out, neither
Morris JF, Krishnamurthy GT. Diagnosis of Pulmonary Embolism. Ann Intern Med. ;114:702–703. doi: 10.7326/0003-4819-114-8-702
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Published: Ann Intern Med. 1991;114(8):702-703.
Emergency Medicine, Pulmonary Embolism, Pulmonary/Critical Care, Venous Thromboembolism.
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