| Popis: |
OBJECTIVES: Autonomic dysfunction is detected in patients with coronary artery disease and is indicative of poor prognosis. The aim of this study was to compare baseline T peak-end interval (Tp-e) and heart rate recovery index [HRR-I] values in patients with stable coronary artery disease who had a left ventricular ejection fraction [EF] > 50 % and < 50 %. MATERIALS AND METHODS: In Group 1, there were 107 patients with exertional chest pain for more than 2 months and class 1-2 angina with EF < 50 %, had 3-vessel diseases on coronary angiography. In Group 2, there were 76 patients with EF > 50 %, had 3-vessel diseases on coronary angiography. Baseline Tp-e and heart rate values of both groups were measured and transthoracic echocardiograms were performed at the beginning. Both Group 1 and 2 were then subjected to exercise testing according to the Bruce protocol and heart rates were measured at the peak and 1st, 2nd, and 3rd minutes of exercise. RESULTS: There was a statistically significant difference between group 1 [95.8 ± 6.8 msec] and group 2 [71.4 ± 5.1 msec] with regard to basal Tp-e [P |
