目的评价左右心房联合测压导管(简称联管)用于心脏手术围术期左心房压力监测的可行性、准确性和安全性。
Objective to evaluate the feasibility, accuracy and safety of a new combined left and right atrial catheter for monitoring left atrial pressure in pediatric cardiac patients.
结论正常人中老年组较青年组左房扩大，心房内压力和储存功能增加，心房内血流速度及被动排空功能下降。
Conclusions in normal people, with the increase of age, left atrium size, pressure and reserve function increase, and the passive empty function is reduced in aged people.
测定置换前、后的左心房和左心室压力曲线，以及主动脉流量曲线。
Left atrial, left ventricular pressure curves and aortic blood flow curves were measured beret and after mitral valve replacement.
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