Key result
ST-segment depression occurring only during the recovery phase of an exercise treadmill test had a significantly lower positive predictive value for significant coronary artery disease compared to depression during exercise (30.4% vs 81.3%, p<0.01).
Why the study?
Does ST-segment depression occurring only during recovery predict significant angiographic coronary artery disease compared to ST-segment depression during exercise in patients undergoing treadmill testing?
Cross-Sectional (n=931)
Does ST-segment depression occurring only during recovery predict significant angiographic coronary artery disease compared to ST-segment depression during exercise in patients undergoing treadmill testing?
Absolute Event Rate: 30.4% vs 81.3%
p-value: p=<0.01
Horizontal mild ST-segment depression occurring only during the recovery period of an exercise treadmill test generally represents a false positive response for coronary artery disease, particularly in female patients.
Recovery-only ST depression was associated with lower CAD PPV; leaves open whether it warrants revised diagnostic thresholds in treadmill testing.
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 STsegment 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 STsegment 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.( ( ( (Korean Circulation J 2002 ; 32( ( ( (2) ) ) ) : 131-136) ) ) ) KEY WORDS：Exercise test；Coronary disease. 서 론운동부하심전도검사는 거동이 곤란한 고령의 환자나 혈압이
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Lee et al. (2002) conducted a cross-sectional in Coronary Artery Disease (n=931). ST-segment depression during recovery only vs. ST-segment depression during exercise was evaluated on Positive predictive value for significant angiographic coronary artery disease (p=<0.01). ST-segment depression occurring only during the recovery phase of an exercise treadmill test had a significantly lower positive predictive value for significant coronary artery disease compared to depression during exercise (30.4% vs 81.3%, p<0.01).
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