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目的 :探讨经皮腔内冠状动脉成形术 ( PTCA)对心绞痛患者 QT及 JT离散度 ( QTd及 JTd)的作用。方法 :测定 5 0例心绞痛患者 (心绞痛组 ) PTCA术前和术后的 QTd及 JTd,并以 5 0例正常冠状动脉者作对照 (对照组 )。结果 :1心绞痛组于 PTCA后 QTd及 JTd显著减小 ( P <0 .0 1) ,而对照组于冠状动脉造影术后 QTd及JTd与术前比较 ,无明显改变。 2与对照组比较 ,心绞痛组 PTCA前 QTd及 JTd明显增大 ( P <0 .0 1)。术后心绞痛组 QTd及 JTd值虽高于对照组 ,但无统计学意义 ( P >0 .0 5 )。结论 :PTCA能使 QTd及 JTd减小
Objective: To investigate the effect of percutaneous transluminal coronary angioplasty (PTCA) on QT and JT dispersion (QTd and JTd) in patients with angina pectoris. Methods: QTd and JTd of 50 patients with angina pectoris (angina pectoris group) before and after PTCA were measured. Fifty normal coronary arteries were used as control group (control group). Results: 1 The QTd and JTd of angina pectoris group were significantly decreased after PTCA (P <0.01), but there was no significant difference between QTd and JTd after coronary angiography in control group. Compared with the control group, pre-PTCA and JTd of PTCA in angina group were significantly increased (P <0.01). The postoperative QTd and JTd values of angina pectoris group were higher than that of the control group, but there was no statistical significance (P> 0.05). Conclusion: PTCA can reduce QTd and JTd