动态心电图最快心率Q-Tс较最慢心率延长对冠心病的诊断价值  

Diagnostic value of Q-Tc prolongation from maximum heart rate compared with slowest to coronary atherosclerotic heart disease by dynamic electrocardlography

作　　者：李建[1] 

机构地区：[1]山东省嘉祥县人民医院功能科,272400

出　　处：《心电学杂志》1999年第1期9-10,共2页Journal of Electrocardiology(China)

摘　　要：为了解24h动态心电图最快心率Q-T_c较最慢心率的延长部分(Q-T_(cp))对冠心病的诊断价值,观察33例冠心病与33例正常人Q-T_(cp).结果冠心病组最快心率Q-T_c、Q-T_(cp)分别为454.6±23.8ms、66.7±23.6ms,对照组为419.5±29.8ms、24.8±18.8ms,两组差异有非常显著意义(P<0.01).如以Q-T_(cp)≥45ms为冠心病阳性标准,其敏感性为85%,特异性为91%;均高于Q-T_c>440ms标准(64%、85%).认为Q-T_(cp)≥45ms可作为诊断冠心病的指标之一.Q-Tc prolongation(Q-Tcp) between maximum heart rate and slowest heart rate of 24h dynamic electrocardiography is of some value in diagnosing coronary atherosclerotic heart disease.To understand this,we observed Q-Tcp of 33 patients and 33 normal subjects, Results showed:maximum heart rate Q-Tc =454.6?3.8ms,Q-Tcp = 66.7 ?23.6ms, in control patient group, but 419.5 ?29.8ms, 24.8 ?18.8ms in group.Thus it could be seen a significant difference bewteen two groups(P < 0.01) .If Q-Tcp ≥45ms is taken as a postive diagnostic standard , sensitivity is 85%; and specificity is 91%, both higher than (Q-Tc > 440 ms standard(64%, 85%) .Therefore, we could take Q-Tcp≥45 ms as an index in diagnosing coronary atherosclerotic heart disease.

关 键 词：动态心电图 Q-TC延长 冠心病 

分 类 号：R541.404[医药卫生—心血管疾病] R540.41[医药卫生—内科学]