Abstract
Letters1 February 1998Ultrasonography of Leg Veins in Patients Suspected of Having Pulmonary EmbolismFranktien Turkstra, MD, Edwin J.R. van Beek, MD, and Harry R. Buller, MDFranktien Turkstra, MDAcademic Medical Center; Amsterdam, the NetherlandsSearch for more papers by this author, Edwin J.R. van Beek, MDAcademic Medical Center; Amsterdam, the NetherlandsSearch for more papers by this author, and Harry R. Buller, MDAcademic Medical Center; Amsterdam, the NetherlandsSearch for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-128-3-199802010-00018 SectionsAboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail IN RESPONSE:Although our study was carefully executed, the above letters question our finding that in patients suspected of having pulmonary embolism, compression ultrasonography has a false-positive rate for deep venous thrombosis of 13% to 26%.Drs. Perrier and Bounameaux mention that the specificities of ultrasonography and lung scanning are the same and that the number of inappropriately treated patients would therefore not differ. Our theoretical population was intended to clarify the point that although the specificity for ultrasonography was 97%, the positive predictive value of an abnormal ultrasonography result is only 74% when the lung scan is nondiagnostic. This ...
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