Effect of subzero-balanced ultrafiltration plus modified ultrafiltration on pulmonary function and early cognitive function in patients after cardiac valve replacement operation
【Objective】 To observe the effect of subzero-balanced ultrafiltration and modified ultrafiltration on pulmonary function and early cognitive function in patients after heart valve replacement operation.【Methods】 Sixty patients undergoing mitral valve replacement were randomly divided into conventional ultrafiltration group(CUF) and subzero-balanced ultrafiltration plus modified ultrafiltration group(S + M) with thirty cases in each group. In the CUF group ultrafiltration was started after rewarming, and sto...