Medeiros C C, de Moraes A V, Cardoso L F, Rati M A, Abensur H, de Azevedo J G, Parga Filho J R, Martins T C, Grinberg M, Moffa P J
Instituto do Coração do Hospital das Clínicas-FMUSP, São Paulo.
Arq Bras Cardiol. 1991 Jul;57(1):17-20.
To evaluate the predictive value of mitral valve components in percutaneous balloon mitral valvuloplasty (PBMV).
53 patients undergoing PBMV were submitted to an echocardiographic analysis of mitral valve in order to note mobility, thickness, calcification of leaflets and subvalvar apparatus (SV). Mitral valve area (VA) before and after PBMV was obtained using continuous wave Doppler. Patients were divided in group 1 (VA enhance inferior to 50%) and 2 (VA enhance equal or superior to 50%) and subgroups A (VA post PBMV inferior to 1.5 sqcm) and B (VA post PBMV equal or superior to 1.5 sqcm). Correlations between the score of each component of mitral valve and the results were established.
Concerning to the total score, there was no significant difference between the groups and subgroups. Differences were significant when SV was analysed separately (p less than or equal to 0.001). VA average in patients with SV compromising grade 3 (1.28 +/- 0.26 sqcm) was inferior to those with grade 1 or 2 (p less than or equal to 0.001).
SV has a higher predictive value in the success of PBMV.
评估二尖瓣各组成部分在经皮球囊二尖瓣成形术（PBMV）中的预测价值。
对53例行PBMV的患者进行二尖瓣超声心动图分析，以观察瓣叶及瓣下结构（SV）的活动度、厚度、钙化情况。采用连续波多普勒获取PBMV前后的二尖瓣面积（VA）。患者分为1组（VA增加低于50%）和2组（VA增加等于或高于50%），以及A亚组（PBMV后VA低于1.5平方厘米）和B亚组（PBMV后VA等于或高于1.5平方厘米）。建立二尖瓣各组成部分评分与结果之间的相关性。
就总分而言，组间和亚组间无显著差异。单独分析SV时差异有统计学意义（p小于或等于0.001）。SV受损3级患者的平均VA（1.28±0.26平方厘米）低于1级或2级患者（p小于或等于0.001）。
SV对PBMV成功具有较高的预测价值。
