超声心动图评价心脏机械瓣功能的长期变化趋势

Long term change trend of echocardiographic evaluation of mechanical heart valve function

目的：探讨超声心动图评价心脏机械瓣膜置换术后瓣叶功能的长期变化趋势。方法选取2012年6月-2014年6月本院收治的186例心脏机械瓣置换术后患者作为研究对象，分析其超声心动图检查资料，根据置换时间、机械瓣类型等因素比较主动脉瓣置换与二尖瓣置换患者不同置换时间、不同型号的机械瓣功能。结果10-15年组的Pmax、MGP显著高于5-10年组和〈5年组，差异有统计学意义（P〈0.05）。各时间点不同类型主动脉瓣位机械瓣间EOA比较，差异有统计学意义（P〈0.05）。5-10年组的PR、MR、PG、MGP显著高于〈5年组，差异有统计学意义（P〈0.05），10-15年组的PR、MR、PG、MGP显著高于5-10年组，差异有统计学意义（P〈0.05）。结论超声心动图评估能够明显反映机械瓣的功能衰退情况，在主动脉瓣及二尖瓣置换术后5-10年其出现渐进性功能衰退的变化趋势，因此术后应定期给予超声心动图评估。

Objective To explore the long term change trend of echocardiographic evaluation of mechanical heart valve function after mechanical heart valve replacement. Methods 186 patients after mechanical heart valve replacement from June 2012 to June 2014 in our hospital were selected as the research object,the echocardiography data was ana-lyzed,the mechanical valve function of different replacement times,different types in aortic valve replacement and mitral valve replacement patients was compared according to the mechanical valve. Results The Pmax and MGP in the 10-15 years group was higher than that in the 5-10 years group and less than 5 years group,with significant difference （P〈0.05）. The EOA of each time point of different types of aortic mechanical valve was compared,with statistical differ-ence（P〈0.05）.The PR,MR,PG,MGP in the 5-10 years group was higher than that in less than 5 years group,with signifi-cant difference （P〈0.05）.The PR,MR,PG,MGP in the 10-15 years group was higher than that in the 5-10 years group, with significant difference （P〈0.05）. Conclusion Echocardiographic evaluation can reflect the recessionary situation of mechanical prosthetic valve function,the mechanical valve function in the aortic valve and mitral valve replacement in 5-10 years is gradually declined,so patients should be given regular echocardiographic assessment.