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Korean Circ J. 2002 Feb;32(2):131-136. Korean. Original Article. https://doi.org/10.4070/kcj.2002.32.2.131
Lee N , Choi SH , Park WJ , Cho KY , Choi YJ , Park DK , Hong KS , Doo YC , Han KR , Oh DJ , Ryu KH , Rhim CY , Lee KH , Lee Y .
Department of Internal Medicine, College of Medicine, Hallym University, Seoul, Korea. namholee@hanmail.net
Abstract

BACKGROUND AND OBJECTIVES: "Recovery only" ST-segment depressions are sometimes detected during an exercise treadmill test. We undertook this study in order to clarify the predictive value of exercise-induced ST-segment depression occurring in recovery only. SUBJECTS AND METHODS: The study included 931 patients who had both a sign or symptom -limited treadmill test. Of the 66 patients who demonstrated abnormal ST-segment responses, 43 experienced ST-segment depressions during exercise (Group A) and 23 displayed such responses only during recovery (Group B). RESULTS: The positive predictive value of an exercise treadmill test for significant angiographic disease in group A (81.3%) was statistically different from the predictive value in group B (30.4%). Horizontal ST-segment depression in recovery periods and female sex were statistically significant factors favoring negative coronary angiographic results. CONCLUSION: The occurrence of horizontal mild ST-segment depression during only the recovery periodgenerally represents a "false positive" response, particularly in female patients.

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