摘要:目的探讨冠心病、糖尿病者心率变异性(HRV)检测中Lorenz散点图与时域指标的相关性及诊断价值。方法采用DCG对80例冠心病者(A组)、74例糖尿病者(B组)与76例正常人(C组)进行Lorenz散点图和时域指标对比分析HRV变化及其诊断价值。结果与C组比较,A、B组的SDNN、SDANN、RMSSD均下降,P〈0.05;C组散点图92.11%呈正常彗星状,A、B组多呈鱼雷状、短棒状、梭形、不规则、复杂形等图形改变,异常率分别迭81.25%、62.16%。A组Lorenz异常的敏感性、准确率及阴性预测值明显高于SDNN〈100ms的指标,B组Lorenz异常的敏感性高于SDNN〈100ms的指标,P〈0.01;P〈0.001。结论Lorenz散点图与时域指标相比HRV变化敏感性更高,更能反映HRV在冠心病、糖尿病中的差异。
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