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为了阐明窦性心律时Q-Tc和心室起搏心律时Q-T(QT-V)间期与冠心病人能否诱发室性心动过速(VT)的关系,作者将40例冠心病人分为可诱发VT的A组(20例)与不能诱发VT的B组(20例)。A驵的QT-V大于B组。在心室起搏周期长度(PCL)为600ms时,两组的QT-V分别为424±26与396±19ms(P<0.01);在PCL 500ms时,分别为407±20与383±21ms(P<0.01);在PCL 430ms时,分别为390±21与362±17ms(P<0.001)。窦性心律时的QTc两组均值相近似,分别为413±20与408±25ms,差异无显著性。在PCL500与430ms时,Q-T间期长于380ms的,A组分别在占95％与60％,B组分别占35％与5％。在
In order to clarify the relationship between Q-Tc in sinus rhythm and QT-Q in ventricular pacing and ventricular tachycardia (VT) in patients with coronary heart disease, 40 patients with coronary heart disease were divided into A group (20 cases) can induce VT and B group (20 cases) can not induce VT. A 驵 QT-V is greater than the B group. The QT-V of the two groups were 424 ± 26 and 396 ± 19 ms (P <0.01) at 600 ms PCD and 407 ± 20 and 383 ± 21 ms respectively at PCL 500 ms <0.01) and 390 ± 21 and 362 ± 17 ms respectively at 430 ms PCL (P <0.001). The mean of QTc in sinus rhythm was similar at 413 ± 20 and 408 ± 25ms, respectively, with no significant difference. At PCL500 and 430ms, the Q-T interval was longer than 380 ms, with 95% and 60% for group A and 35% and 5% for group B, respectively. in