Do the right precordial leads during exercise testing contribute to detection of XXXX ?

@entity1 @entity57584 @entity63 @entity57913 @entity72354 @entity17750 @entity453
BACKGROUND: It is still unknown whether or not the additional right precordial leads (RPL) during exercise testing contribute to detection of @entity453 ( @entity453 ). HYPOTHESIS: The aim of this study was to evaluate the RPL during exercise testing for the detection of @entity453 . METHODS: The study included 157 consecutive @entity1 (116 @entity1 and 41 @entity1 , mean age 66 years) suspected of having @entity453 , who underwent conclusive treadmill exercise testing (heart rate reached at least 85% of the predicted maximum or positive electrocardiogram [ECG] changes were exhibited) and coronary angiography. During exercise testing, the ECG was recorded with the standard 12 leads and 4 RPL ( @entity57913 , @entity17750 , @entity57584 , @entity72354 ). RESULTS: Of the 157 @entity1 , 67 had @entity453 (> 75% stenosis in at least one major coronary artery), and 64 had positive ST changes in the standard ECG leads during exercise testing. Using the conventional 12-lead method, sensitivity and specificity were 76 and 86%, respectively. Only three @entity1 exhibited positive changes in the RPL leads; all had > 0.1 mV ST elevation in one of the RPL leads with > 0.1 mV ST elevation in aVR. Two of these @entity1 had significant right coronary artery lesions and the other had a lesion of the left anterior descending artery which perfused the inferior as well as the anteroseptal area. In the standard 12 leads, one of the @entity1 with an abnormal RPL and a right coronary lesion was negative, while the other two @entity1 were positive. Combining RPL with the conventional 12-lead method, sensitivity and specificity were 78 and 86%, respectively. Therefore, RPL did not improve the accuracy of the exercise ECG. CONCLUSION: The use of RPL during exercise testing may contribute to the detection of @entity63 perfused by the right coronary artery; however, it does not improve the diagnostic accuracy of the exercise test.
