Left ventricular end-diastolic volume (EDV), cardiac output(CO), systolic volume (SV)and ejection fraction (EF) significantly increased 1 week after PBMV, but Left ventricular end-systolic volume (ESV) had no change.

• PBMV术后 1周左室舒张末期容积 (EDV)、心输出量 (CO)、每搏输出量 (SV)和射血分数 (EF)均明显增高 (P <0 0 1) ；而左室收缩末期容积 (ESV)却无明是改变 (P >0 0 5 ) ;