TY - JOUR
T1 - Exercise testing in women with chest pain. Are there additional exercise characteristics that predict true positive test results?
AU - Pratt, Craig
AU - Francis, M. J.
AU - Divine, G. W.
AU - Young, J. B.
N1 - Funding Information:
Computational assistance provided by the CLINFO project funded by grant RR-00350, Division of Research Resources, National Institutes of Health, Bethesda.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1989
Y1 - 1989
N2 - Women have a notoriously high rate of false positive exercise test results. Since the exercise ST segment response has low specificity in predicting CAD in women, we examined additional exercise parameters in 200 women with a history of chest pain compatible with angina and having ST segment depression ≥1 mm recorded during a Bruce treadmill test. All subsequently had coronary arteriography. Two groups were compared: group A (n=80) with CAD (≥70 percent stenosis of one or more coronary artery) and group B (n=120) with angiographically confirmed normal coronary arteries (normal or minimal placquing). The exercise criteria analyzed included: (1) chest pain during exercise, (2) percent target heart rate, (3) extent of ST shift, (4) morphology of the ST segment slope, (5) time to normalization of the ST segment, and (6) total exercise duration. Multivariate analysis (using a stepwise logistic regression model) identified four independent exercise variables associated with the likelihood of CAD: (absence of MVP, p = .003; exercise duration <5min, p = .02; ability to reach target heart rate, p = .027; time to ST normalization ≥6 min, p<.001). False positive exercise test results were more likely to occur when the following exercise test variables were present: ability to exercise to stage 3 of the Bruce protocol and a rapid (≤4 minutes) normalization of ST shift after cessation of exercise. Attention to these additional exercise variables allows more careful selection of women requiring more definitive (and expensive) testing.
AB - Women have a notoriously high rate of false positive exercise test results. Since the exercise ST segment response has low specificity in predicting CAD in women, we examined additional exercise parameters in 200 women with a history of chest pain compatible with angina and having ST segment depression ≥1 mm recorded during a Bruce treadmill test. All subsequently had coronary arteriography. Two groups were compared: group A (n=80) with CAD (≥70 percent stenosis of one or more coronary artery) and group B (n=120) with angiographically confirmed normal coronary arteries (normal or minimal placquing). The exercise criteria analyzed included: (1) chest pain during exercise, (2) percent target heart rate, (3) extent of ST shift, (4) morphology of the ST segment slope, (5) time to normalization of the ST segment, and (6) total exercise duration. Multivariate analysis (using a stepwise logistic regression model) identified four independent exercise variables associated with the likelihood of CAD: (absence of MVP, p = .003; exercise duration <5min, p = .02; ability to reach target heart rate, p = .027; time to ST normalization ≥6 min, p<.001). False positive exercise test results were more likely to occur when the following exercise test variables were present: ability to exercise to stage 3 of the Bruce protocol and a rapid (≤4 minutes) normalization of ST shift after cessation of exercise. Attention to these additional exercise variables allows more careful selection of women requiring more definitive (and expensive) testing.
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U2 - 10.1378/chest.95.1.139
DO - 10.1378/chest.95.1.139
M3 - Article
C2 - 2909329
AN - SCOPUS:0024557526
SN - 0012-3692
VL - 95
SP - 139
EP - 144
JO - CHEST
JF - CHEST
IS - 1
ER -