Key result
An abnormal increase of ≥ 7 mmHg in postexercise systolic blood pressure had significantly better specificity, sensitivity, and accuracy than ST-segment depression ≥ 1 mV for detecting CAD.
Why the study?
Does an abnormal increase in postexercise systolic blood pressure improve the detection of coronary artery disease in patients ≥ 60 years old compared to ST-segment depression?
Observational (n=66)
Does an abnormal increase in postexercise systolic blood pressure improve the detection of coronary artery disease in patients ≥ 60 years old compared to ST-segment depression?
An abnormal increase of ≥ 7 mmHg in postexercise systolic blood pressure is a sensitive and specific indicator for diagnosing coronary artery disease in older patients, outperforming standard ST-segment depression.
May support postexercise SBP monitoring for CAD in older adults; leaves open prospective validation before changing exercise test criteria.
Data from 66 patients ≥ 60 years old with suspected coronary artery disease (CAD) were studied to determine the diagnostic value of an abnormal increase in postexercise systolic blood pressure (SBP) for detecting CAD in gerontal patients. Treadmill exercise testing (TET) and selective coronary angiography (CAG) were carried out and SBP was measured pre-TET and at each minute during a 6-min post-TET recovery phase. Abnormal increase in postexercise SBP was defined as a higher SBP compared with that measured earlier during the 6-min post-TET period. An abnormal increase of ≥ 7 mmHg in postexercise SBP had a statistically significantly better specificity, and also showed higher sensitivity and accuracy, than ST-segment depression ≥ 1 mV in identifying gerontal patients with CAD. The combination of ST-segment depression and abnormal SBP resulted in further improvement of the specificity for detecting CAD. It is concluded that measurement of abnormal increase in postexercise SBP may be a sensitive indicator of gerontal CAD.
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Yu et al. (2011) conducted an observational in Suspected coronary artery disease (n=66). Abnormal increase in postexercise systolic blood pressure (≥ 7 mmHg) vs. ST-segment depression ≥ 1 mV was evaluated on Detection of coronary artery disease. An abnormal increase of ≥ 7 mmHg in postexercise systolic blood pressure had significantly better specificity, sensitivity, and accuracy than ST-segment depression ≥ 1 mV for detecting CAD.
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