CLINICAL TRIAL OF PERCUTANEOUS BALLOON MITRAL VOLVULOPLASTY IN PATIENTS WITH RESTENOSIS AFTER TREATING WITH MITRAL VALVE COMMISSUROTOMY

<正> Sixteen cases patients with restenosis after treatment with mitralvalve commissurotomy(CMV)were treated by percutaneoas bal-loon mitral volvaloplasty(PBMV)in this study.The result shownthat the area of mitral valve(MVA)was significantly inceased(p<0.001).The mean pressure of left atrium(LAMP)and thetransmitral valve pressure grade(MVPG)was decreased(p<0.001).Of them,3 cases of patients complicated with atrialfibrillation,there were no any thrembus in left atrium which wasconfirmed by ultrasound,after taking warfarin 3mg/day for twomonths,were successfully performed PBMV,and achived a goodresult and less complication.Follow up(10.2±3.6months)datashown that the MVA was still significantly larger than pre-opera-tion(p<0.001),LAMP、MVPG was lower thsn pre-operation,thedifference after operation was not significant(p>0.1).