Usefulness of the QTc interval in predicting myocardial ischemia in patients undergoing exercise stress testing.
Prolongation of the QTc interval during stress testing predicts myocardial ischemia with a sensitivity of 88% and a specificity of 93%. Measurement of the QTc segment should be considered as an adjunctive electrocardiographic variable in the interpretation of stress tests and is even useful in patients who are not able to achieve the age-predicted target heart rate level.
Arab
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Department of Medicine, Social and Preventive Medicine, The Buffalo General Hospital, SUNY at Buffalo, 14203, USA.
Valeti
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V
Schünemann
H J
HJ
López-Candales
A
A
D016022:Case-Control Studies; D003327:Coronary Disease / Q000175:diagnosis; D004562:Electrocardiography; D005080:Exercise Test; D006321:Heart / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011237:Predictive Value of Tests; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D017256:Technetium Tc 99m Sestamibi
D019275:Radiopharmaceuticals; D017256:Technetium Tc 99m Sestamibi