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目的:评估室性期前收缩(室早)导管消融术后早期左室射血分数(LVEF)恢复状况对室早心肌病患者远期左室收缩功能恢复的预测价值。方法:对诊断符合室早心肌病的42例患者进行为期1年的随访,分别在导管消融术前,导管消融术后3个月、6个月、12个月时行超声心动图检查以确定LVEF、左室舒张末期内径(LVEDD)。根据1周时LVEF是否改善(LVEF较基线水平增加≥25%)分为LVEF早期改善组和LVEF早期未改善组,比较2组患者在导管消融术前,术后随访第3、6、12个月时LVEF、LVEDD的差异。结果:与LVEF早期未改善组患者相比,LVEF早期改善组患者随访第12个月时有着更高的LVEF[(59.24±2.67)%∶(52.24±3.83)%,P<0.05]。结论:室早导管消融术后早期LVEF恢复预示着室早心肌病左室收缩功能的完全恢复。
OBJECTIVE: To evaluate the predictive value of early left ventricular ejection fraction (LVEF) recovery after ventricular premature ventricular contractions (premature ventricular catheter ablation) in the recovery of long-term left ventricular systolic function in patients with ventricular premature ventricular myopathy. Methods: Forty-two patients diagnosed as early cardiomyopathy were followed up for one year. Echocardiography was performed before catheter ablation, 3 months, 6 months and 12 months after catheter ablation to determine LVEF, left ventricular end diastolic dimension (LVEDD). According to the improvement of LVEF at 1 week (LVEF> 25% increase from baseline), the patients were divided into LVEF early improvement group and LVEF early non-improvement group. Before the catheter ablation, compared with the 3rd, 6th, 12th Month LVEF, LVEDD differences. RESULTS: Patients with LVEF early improvement had a higher LVEF at 12 months of follow-up (59.24 ± 2.67% vs 52.24 ± 3.67%, P <0.05) compared with those in the early LVEF unadjusted group. CONCLUSIONS: Early LVEF recovery after early ventricular catheter ablation predicts complete recovery of left ventricular systolic function in premature ventricular cardiomyopathy.