目的通过对比不同来源频发室性早搏(PVC)患者射频消融术前及术后左心房功能,了解成功射频消融术后左心房功能变化及不同起源频发PVC对左心房功能变化的影响,从而指导临床PVC的治疗。
方法收集2014年12月至2015年12月在河北医科大学第二医院住院的24 h PVC负荷>10 000,且成功行射频消融术的患者68例。依据术中不同PVC起源定位分为右心室来源频发PVC患者41例[年龄(47±15)岁,男15例],左心室来源频发PVC患者27例[年龄(50±17)岁,男16例]。采用二维斑点追踪技术分别于术前、术后1d、2周、4周观察所有入选患者左心房结构和功能指标。分析2组患者各指标组间及组内比较有无差异。
结果右心室来源组:左心房内径(LAD)呈缓慢减小趋势,于术后2周达最低点[(31.7±3.6)mm对(33.2±4.6)mm, P<0.05];左心房射血分数(LAEF)术前较健康人群显著降低(63.6%±9.3%对70.3%±9.2%, P<0.05),术后缓慢升高并于术后4周达最高点(68.1%±8.2%对63.6%±9.3%, P<0.05);左心房应变及左心房收缩期应变率术后4周内逐渐升高( P<0.05)。左心室来源组:LAEF术前较健康人群降低(60.9%±12.2%对70.3%±9.2%, P<0.05),术后4周内较术前差异无统计学意义;左心房应变术后4周内逐渐升高( P<0.05)。组间比较:左心房应变及左心室舒张早期应变率右心室来源组变化明显优于左心室来源组( P<0.05),其余各指标虽然右心室来源组变化有优于左心室来源组变化的趋势,但差异无统计学意义( P>0.05)。
结论右心室来源频发PVC射频消融术后4周左心房功能显著改善,而左心室来源频发PVC射频消融术后4周左心房功能无明显改善。提示临床上对于右心室来源的PVC应该更加积极治疗。
ObjectiveTo evaluate the changes of left atrial function after radiofrequency catheter ablation (RFCA)and the influence of different origin frequent premature ventricular contractions(PVC)on left atrial function before and after RFCA.
MethodsA total of 68 inpatients with frequent PVC observed on 24 h Holter monitoring(>10 000/24 h)and successful radiofrequency ablation were included in this study in the Second Hospital of Hebei Medical University from December 2014 to December 2015.Among them 41 patients with frequent PVC originated from the right ventricle [age(47±15)years, 15 males] and 27 originated from the left ventricle [age(50±17)years, 16 males]. Left atrial structure and function indices were measured by echocardiography before and after RFCA at 1 day, 2 weeks and 4 weeks to investigate whether there was a difference between groups.
ResultsIn the right ventricular PVC group, the left atrium diameter(LAD)showed a little decreasing trend, the LAD at 2 weeks after operation was the lowest level [(31.7±3.6) mm vs.(33.2±4.6) mm, P<0.05]. Preoperative left atrial ejection fraction(LAEF) was significantly lower than that of healthy controls(63.6%±9.3% vs.70.3%±9.2%, P<0.05), postoperative LAEF increased slowly and upped to the highest point in 4 weeks after operation(68.1%±8.2% vs.63.6%±9.3%, P<0.05). The left atrial strain(S)and the strain rate at left atrial systolic(SRa)after radiofrequency ablation increased gradually( P<0.05). In the left ventricular PVC group, preoperative LAEF was significantly lower than that of healthy controls(60.9%±12.2% vs.70.3%±9.2%, P<0.05) and there was no significant difference between before and 4 weeks after radiofrequency ablation( P>0.05). The S and the strain rate at left ventricular diastolic early(SRe)in the right ventricular group was significantly higher than that in the left ventricular group( P<0.05). Although, other indexes had a trend of drcrease in the right ventricular origin group than that in the left ventricular origin group, the differences were not statistically significant( P>0.05).
ConclusionsThe left atrial function was significantly improved in 4 weeks after operation in the right ventricular origin group, but had no change in the left ventricular origin group.We should make more aggressive treatment of frequent PVC originating from the right ventricle.
张艳,谢瑞芹,白晖,等. 不同来源频发室性早搏射频消融前后左心房功能变化[J]. 中华心律失常学杂志,2017,21(3):213-218.
DOI:10.3760/cma.j.issn.1007-6638.2017.03.007
你好,我可以帮助您更好的了解本文,请向我提问您关注的问题。