摘要
Objective To evaluate factors influencing electrocardiogram (ECG) stres s test Methods The treadmill stress test and coronary angiogram (CAG) records were reviewed retrospectively in 435 consecutive patients with chest pain betwee n 1991 and 1997 There were 44 cases with normal CAG but positive exercise stre s s test results (falsepositive, Group A), and 33 cases with both negative CAG a nd negative exercise test (truenegative, Group B) The baseline ECG, echocard i ogram, abnormal systolic blood pressure response and history of diabetes mellit us and hypertension in the two groups were compared Results There was no significant difference between the two groups with r espect to age, gender, and antianginal medication More patients in Group A had hype rtension (523% vs 273%, P <005) and diabetes mellitus (15 9% v s 0%, P <005) Left ventricular (LV) hypertrophy in baseline E C G and by echocardiogram was more often present in Group A (250% vs 30%, P <005; 364% vs 121%, P <005) There were no signi fican t differences between the two groups with respect to maximal heart rate, maxima l s ystolic blood pressure (BP), metabolic equivalents, postexercise systolic BP, te rmination for exercise test, baseline ECG with bundle branch block and ST depres sion Conclusion Our results suggest that LV hypertrophy and a history of hyp ertension or diabetes mellitus are the main factors influencing ECG stress test for detecting coronary heart disease
Objective To evaluate factors influencing electrocardiogram (ECG) stres s test Methods The treadmill stress test and coronary angiogram (CAG) records were reviewed retrospectively in 435 consecutive patients with chest pain betwee n 1991 and 1997 There were 44 cases with normal CAG but positive exercise stre s s test results (falsepositive, Group A), and 33 cases with both negative CAG a nd negative exercise test (truenegative, Group B) The baseline ECG, echocard i ogram, abnormal systolic blood pressure response and history of diabetes mellit us and hypertension in the two groups were compared Results There was no significant difference between the two groups with r espect to age, gender, and antianginal medication More patients in Group A had hype rtension (523% vs 273%, P <005) and diabetes mellitus (15 9% v s 0%, P <005) Left ventricular (LV) hypertrophy in baseline E C G and by echocardiogram was more often present in Group A (250% vs 30%, P <005; 364% vs 121%, P <005) There were no signi fican t differences between the two groups with respect to maximal heart rate, maxima l s ystolic blood pressure (BP), metabolic equivalents, postexercise systolic BP, te rmination for exercise test, baseline ECG with bundle branch block and ST depres sion Conclusion Our results suggest that LV hypertrophy and a history of hyp ertension or diabetes mellitus are the main factors influencing ECG stress test for detecting coronary heart disease
