经皮冠状动脉腔内成形术及再狭窄对QT离散度的影响Effects of percutaneous transluminal coronary angioplasty and restenosis on QT dispersion
刘海波,高润霖,陈纪林,杨跃进,乔树宾,秦学文,陈在嘉,刘晓辉
摘要(Abstract)：
目的观察经皮冠状动脉腔内成形术（ＰＴＣＡ）对ＱＴ离散度（ＱＴｄ）的影响及ＰＴＣＡ术后再狭窄时ＱＴｄ的变化。探讨ＱＴｄ在预测再狭窄中的意义。方法将３０例临床拟诊ＰＴＣＡ术后再狭窄的患者根据第二次冠状动脉造影（冠造）的结果分为再狭窄组（１９例）及非再狭窄组（１１例）。对两组患者第一次ＰＴＣＡ术前后、第二次ＰＴＣＡ（或冠造）术前后的同步１２导联心电图同时进行ＱＴｄ（ＱＴｄ＝最大ＱＴ间期－最小ＱＴ间期）及校正的ＱＴ离散度（ＱＴｃｄ）的测定。结果 两组患者第一次ＰＴＣＡ术后ＱＴｄ及ＱＴｃｄ均较术前显著减小（Ｐ＜０．００５）。再狭窄组第二次ＰＴＣＡ术前ＱＴｃｄ（７０．９±１７．１）ｍｓ又恢复至第一次ＰＴＣＡ术前（７３．５±１７．２）ｍｓ的水平，且显著大于（Ｐ＜０．００１）第一次ＰＴＣＡ术后（３５．２±８．９）ｍｓ及第二次ＰＴＣＡ术后（３４．５±９．３）ｍｓ的水平。非再狭窄组第二次冠造前ＱＴｃｄ（３０．７±８．５）ｍｓ与第一次ＰＴＣＡ术后（２９．３±８．１）ｍｓ比较无显著变化（Ｐ＞０．０５），仍显著小于（Ｐ＜０．００５）第一次ＰＴＣＡ术前（６９．６±１２．７）ｍｓ。结论ＰＴＣＡ术可降低冠心病患者ＱＴ离散度，再狭窄时ＱＴ离
关键词(KeyWords)： QT离散度; 经皮冠状动脉腔内成形术; 再狭窄; 冠心病
基金项目(Foundation):
作者(Author): 刘海波,高润霖,陈纪林,杨跃进,乔树宾,秦学文,陈在嘉,刘晓辉
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