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植入DDD起搏器后不同房室间期对心功能的影响

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摘要 为比较不同的房室间期(AVD)对植入永久起搏器患者心功能的影响,以寻找最佳的AVD,对60例植入DDD(或DDDR)起搏器患者(心室起搏电极位于右室心尖部,心房电极位于右心耳)按要求分为3组:A组AVD=180ms,B组AVD=250ms,C组AVD>250ms,每组20例。A组和B组心室起搏夺获率>90%,C组心房自身下传心率>90%。随访前及随访8个月后均进行Minnisota生活质量评分(QOL)、6min步行距离试验(6-MWT)及左室射血分数(LVEF)的测定。结果表明,A组和C组3项指标均明显改善,但B组3项指标均无明显变化,A组术后6-MWT及QOL均优于C组,但LVEF无明显差别,A组和C组术后3项指标均明显优于B组。结论:在不能减少心室起搏时(如Ⅲ度AVB),应将DDD起搏器的AVD定在180ms,这样有益于保护心功能。
出处 《沈阳部队医药》 2008年第5期303-304,共2页
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参考文献8

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