摘要：
Objective To investigate the clinical significance of heart rate recovery (HRR) by treadmill exercise test ( TET) in diagnosis of coronary heart disease ( CHD) .Methods One hundred and ten patients who were suspected coronary heart disease were selected to receive TET examination , and underwent coronary artery angiography ( CAG) 2 week after the TET examination, according to whether implanted stent or not , they were divided into stent implantation group (group A) with 66 cases and non-stent implantation group ( group B) with 44 cases, the TET parameters included section ST , maximum ST/HR slope (ST/HR), HRR, the ratio of systolic blood pressure (rSBP) etc were compared between the two groups .Results In group A, the index of ST segment , ST/RR and rSBP were higher than in group B , the difference was statistically significant ( P <0.05, P <0.01), while HRR was lower than that in group B , the difference was statistically significant ( P <0.01). To compare the diagnostic value of various indexes of TET , ST segment’s highest sensitivity was 93.9%, the sensitivity of rSBP was 90.9%, the maximum ST/HR slope’s sensitivity was 89.4%, the sensitivity of HRR was 87.9%;HRR’s speci-ficity was 90.9%, the correct index was 78.0%.HRR index combined with ST index , maximal ST/HR slope and rSBP, the sensitivity was 90.1%, 86.2%and 85.4%respectively, the specificity was 72.3%, 77.4%and 87.0%respectively.Con-clusion The specificity of HRR is high , combined with other indicators , it can be used for the diagnosis of coronary heart disease.%目的：探讨心率恢复性（ HRR）活动平板试验（ TET）中诊断冠心病（ CHD）的临床意义。方法选取拟诊冠心病者110例行TET在检查，并于检查后2周内行冠状动脉造影（CAG），以是否植入支架分为支架植入（A组）66例与非支架植入（B组）44例，比较2组TET参数：包括ST段、最大ST／HR斜率（ST／HR）、HRR、收缩压恢复比（rSBP）等。结果 A组ST段、ST／RR和rSBP指标均高于B组，差异有统计学意义（ P ＜0|．05， P ＜0．01），而HRR明显低于B组，差异有统计学意义（ P ＜0．01）。比较TET各种指标的诊断价值，ST段指标敏感度最高为93．9％，rSBP敏感度次之为90．9％，最大ST／HR斜率的敏感度为89．4％，HRR敏感度最低为87．9％；HRR特异度为90．9％、正确指数为78．0％。 HRR指标与ST指标、最大ST／HR斜率、rSBP结合，敏感度分别为90．1％、86．2％、85．4％，特异度分别为72．3％、77．4％、87．0％。结论 HRR有较高的特异度，与其他指标结合可用于冠心病的诊断。
