最大ST/HR斜率法用于老年冠心病临床诊断的价值探讨

The Diagnostic Value of the Marximal ST Segment/Heart Rate Slope on Elderly Patients with Coronary Heart Diseare

目的:探讨最大ST/HR斜率对老年冠心病临床诊断的价值。方法:用踏车运动试验测定30例老年冠心病和30例正常老年对照的最大ST/HR斜率及ST段压低值。结果:老年冠心病组的最大ST/HR斜率值明显高于对照组(分别为3.04±1.3及0.91±0.9uV/bpm,P<0.01),最大ST/HR斜率的敏感性和特异性高于ST段压低标准(分别为90％,86.6％和60％,73.3％;P<0.05)。随冠脉病变数目增多其最大ST/HR斜率值呈增大趋势。结论:最大ST/HR斜率法对老年冠心病的临床诊断有较高的敏感性和特异性,优于单纯ST段压低法,并对预测冠脉病变数目有一定的价值。

Objective: To investigate the clinical diagnostic value of the marximal ST segment/heart rate(HR) slope on elderly patients with coronary heart disease(CHD).Methods: The marximal ST segment/HR slope and ST segment depression in 30 elderly patients with CHD and 30 elderly healthy control were investigated by exercise test.Results:The marximal ST segment/HR slope of the elderly patients with CHD group was higher significantly than the control group(3.04±1.3 vs 0.91±0.9uv/bpm,P<0.01).The marximal ST segment/HR slope was more sensitive and specific than the ST segment depression criteria (90％&86.6％ vs 60％&73.3％).While the numbers of the arteriosclerostic coronary artery vessel increased, so did the marximal ST segment/HR slope.Conclusion: The marximal ST segment/HR slope has higher sensitivity and specificity on the diagnosis of the elderly CHD. It's better than ST segment depression.And it has predictive value on the numbers of the arteriosclerostic coronary artery vessel.