老年急性心肌梗死患者窦性心律和室性早搏时QT离散度的变化及意义

The singnificants of QT dispersion measurements in patients with acute myocardial infarction with ventricular extrasystoles and in sinus beats.

对 10 0例老年急性心肌梗死 (AMI)患者、5 0例不稳定性心绞痛 (U AP)患者和 40例正常人进行 QTd检测。发现 AMI患者室性早搏时 QTd(QTd- V)明显高于窦性心律时 QTd(QTd- S) (P<0 .0 0 1) ,且二者呈明显正相关 ;AMI患者 QTd- V和 QTd- S明显高于 U AP组和对照组 (P <0 .0 0 1)。提示老年 AMI患者 QTd- V和QTd- S可能具有同样的临床价值。

QT dispersion in ventricular extrasystoles(QTd V)and in sinus beats(QTd S) in aging patients with acute myocardial infarction(AMI)(n=100),unstable angina pectoris(UAP)(n=50)and 40 normal controls were measured QTd V was significantly higher than QTd S(P<0 001)in patients with AMI QTd V positively correlated with QTd S QTd V and QTd S were higher than that of both UAP and normal group (P<0 001) The significance of QTd V might be equal to QTd S in agimg patients with AMI