【Abstract】 Objective : To sum marize our experience in percutaneous balloon mital valvuloplasty (PBMV)- Methods :Improved Inoue was applied- It was considered successfulthatthe diastolic murmur disappeared or apparently reduced ,the pressure gradient across the mitral valve ≤5 m m Hg ,the area of mitral orifice increased atleast over 25 % ,and the filled balloon automatically withdrew from left ventricle to left atrium , with no serious complication- Results: Since the Department of Cardiology of this hospital began the technique of percutaneous balloon mitral valvuloplasty (PBMV) in October 1993 , we have performed 98 cases with an average age of 42- Among them 46 cases had concurrent atrial fibrillation (46-9 % ) ,16 had concurrent slight mitralinsufficiency (16-3 % ) ,19 cases had slight pathological changes of concurrent aortic valve (19-4 % ) , 16 cases had the history of closed surgical separation (16-3 % ) , and one with late pregnancy (1-02 % ) - All cases were successful except one with excessive insufficient of the area of mitral orifice (less than 0-45 cm2)- Five had complications ,among them 2 of pericardialtamponade and 3 with cerebral embolism- After pericardial drainage- The two cases of pericardial tamponade relieved- For the three cases of cerebral embolism ,intravenous injection of 200 000 units of urokinase was performed 20 minutes after the appearance of the symptom , and the myodynamia gradually recovered within one hour- For the four cases of worsened mitralinsufficiency ,no deterioration was found in terms of hemodynamics- No deaths occurred in this group- Conclusions : ①Most ofthe patients whose mitral orifice area is 0-5 cm 2,and whose valves are fairly good ,arelikely to be successful- ②For those over 60 years old but with good valves ,the results will still be satisfactory- ③Good quality chest color ultrasonograph has high reliabilty in discovering left auricularthrombi- ④For patients of pregnancy and the fetus ,the PBMVis safe , because the usualradiological dose is low (0-005 GY)- ⑤It is easier to enter the balloon catheter with venipuncture point at the rugosity of inguinal region- ⑥Contrast image of left atrium is sometimes needed in presentation ofthe signs of success in atrial septum puncture- The factthatthe contrast medium remains undispersed at a local spot indicates thatthe needle point remains in muscular layer ofthe atrial septum , whereas slow dispersion of the contrast medium indicates thatthe needle point has pierced through the atrial wall- ⑦C shaped entering pattern should be avoided while the balloon catheter enters the left ventricle , otherwise it will result in thrombus exfoliation or perfortion of left atrium- ⑧Sequence repeated progressive method is recom mendable in mitral dilatation in order to avoid severe mitralinsufficiency ,the com mon complication更多还原