多平面食管超声心动图压力减半时间、血流会聚、血流面积法定量二尖瓣狭窄的比较  

Comparison of Pressure Half time with Proximal FLow Convergence and Flow Area Method in Evaluation of Mitral Stenosis by Multiplane Transesophageal Echocardiography

作　　者：杨宗奇[1] 沈卫峰[1] 施仲伟[1] 胡厚达[1] 潘秀芳[1] 葛孝虹[1] 张建盛[1] 张大东[1] 张宪[1] 郑爱芳[1] 于金德[1] 

机构地区：[1]上海第二医科大学瑞金医院心内科

出　　处：《中国超声医学杂志》1998年第8期19-21,共3页Chinese Journal of Ultrasound in Medicine

摘　　要：对连续行左右心导管检查的４１例风心二尖瓣狭窄患者采用多平面食管超声心动图检查（ＴＥＥ），结果表明，ＴＥＥ压力减半时间、血流会聚法能准确定量二尖瓣狭窄，血流面积法定量二尖瓣狭窄的准确性较差；多平面ＴＥＥ于０°、４５°、９０°和１３５°扫描切面均可准确定量狭窄的二尖瓣口面积；约６０％患者ＴＥＥ所测经二尖瓣最大压力阶差低估实际值。The aim of this study was to compare the accuracy of pressure half time with proximal flow convergence and flow area methods in evaluation of mitral valve area(MVA)by transesophageal echocardiography(TEE)in patients with rhumatic mitral stenosis,and to understand the feasibity of measuring hemodynamic parameters by TEE.The results showed that(1)MVA determined by pressure half time and proximal flow convergence method correlated well with that by Gorlins formula(r=0 87,and 0 88 respectivly),the flow area method provided a lower correlation(r=0 51)and underestimated the MVA.(2)The pressure half time MVAs from any of the 0,45,90,135 degree imaging plane correlated well with that by Golins formula(r=0 81,0 79,0 87,0 83).(3)TEE Doppler derived maximum pressure gradients(max PGs)across the stenotic mitral valve orifice underestimated the catheterization values of max PGs in sixty percent of patients,but TEE Doppler mean pressure gradients(meanPGs)correctively evaluated the catheterization meanPGs.

关 键 词：超声心动图 压力减半时间 血流会聚 二尖瓣狭窄 

分 类 号：R542.510.4[医药卫生—心血管疾病]