Beta blockers and the sensitivity of the thallium treadmill test

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · Chest; (United States)

DOI:https://doi.org/10.1378/chest.92.3.486· OSTI ID:6075701

Martin, G J; Henkin, R E; Scanlon, P J

The effect beta blockers (BB) may have on the sensitivity of the thallium treadmill test (Th-TMT) is controversial. The purpose of this study was to test the hypothesis that BB decrease the sensitivity of the Th-TMT. Two hundred three patients over a two-year period were identified who satisfied the following criteria. All had symptom-limited upright treadmill exercise tests with stress and redistribution thallium imaging, as well as coronary angiography within two months of the Th-TMT. Of 58 patients with CAD not on BB, 52 had an abnormal Th-TMT scan (sensitivity 90 percent). In comparison, the sensitivity of the Th-TMT scan in the 88 patients with CAD receiving BB was 76 percent (p less than 0.05). We conclude that BB may significantly decrease the sensitivity of the Th-TMT. Physicians should fully appreciate the higher false negative rate (24 vs 10 percent) for patients on BB and consider cautious withdrawal prior to diagnostic studies.

• Research Organization: Northwestern Univ. Medical School, Chicago, IL
• OSTI ID: 6075701
• Journal Information: Chest; (United States), Vol. 92:3
• Country of Publication: United States
• Language: English

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