简介:目的研究并发心前区疼痛发作的高血压病前期患者平板运动实验的特点。方法71例有心前区疼痛发作的高血压病(HP)患者与64例有心前区疼痛发作的高血压病前期患者,均进行平板运动试验及冠状动脉(冠脉)造影检查。结果二组敏感性(82.6%,86.5%),阴性预测值(65.2%,75.0%),血压升高幅度差异无统计学意义(P>0.05);而特异性(83.3%,44.19%),阳性预测值(92.6%,62.7%),准确性(82.8%,66.2%),高血压病前期组高于HP组(P<0.05)。HP组患者平板运动试验发生心电图ST段下移时间比高血压病前期组延迟出现(P<0.01)。其冠脉造影阳性组最大ST段下移幅度大于冠脉造影阴性组(P<0.05)。结论高血压病前期患者运动试验假阳性率低,这部分患者平板运动试验心电图ST段下移即时出现,且最大ST段下移幅度大。
简介:目的:探讨在运动试验中,Q-Tc、Q-Tr和Q-Tcd对冠心病诊断的价值.方法:分析经冠状动脉造影证实的98例冠心病患者与51例非冠心病患者,平板运动试验和运动后即刻体表12导联心电图Q-Tc、Q-Tr和Q-Tcd变化,及其预测冠心病的准确性.结果:Q-Tc、Q-Tr的敏感性、特异性,阳性预测值及诊断准确率,分别为84%、76%、83%、81%与69%、88%、89%、77%,与ST段降低相比无明显差异,提示其诊断价值相似;与心血管照影资料对照,上述指标能反映冠脉病变程度:Q-Tcd的敏感度低(58%),而特异性高(94%),其诊断准确性(73%)与其他指标相比无明显差异,故亦有应用价值.结论:运动中Q-Tc,Q-Tr,Q-Tcd与ST段下移标准对冠心病诊断有应用价值.
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