• Jin-ping Liu, Long Cun C, Zheng-yi Feng, Bing-yang Ji, and Chun-hua Li.
• Department of Cardiopulmonary Bypass, Cardiovascular Institute, Fu Wai Hospital, CAMS, PUMC, Beijing 100037, China. Jinping2784@sina.com
• Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 2002 Aug 1; 24 (4): 364-6.

ObjectiveTo compare the effects of conventional ultrafiltration and modified ultrafiltration in protecting patients' pulmonary function during cardiopulmonary bypass.MethodsThirty infants patients (less than 7 kg) were divided into two groups: conventional ultrafiltration group (CUF, n = 15) and modified ultrafiltration group (MUF, n = 15). The volume of ultrafiltration, transfusion, hematocrit (HCT) before and after ultrafiltration, patients' respiration function (respiration index, A-aDO2, airway pressure), the time of mechanical ventilation and ICU in the two groups were respectively monitored.ResultsThe transfusion in MUF group was significantly less than in CUF group (P < 0.01), and the volume of ultrafiltration in MUF group was significantly more than in CUF group (P < 0.01). The time of mechanical ventilation and ICU staying in MUF group were significantly shorter in MUF group than that in CUF group (P < 0.05). At 12 and 24 hours after operations, the A-aDO2 in MUF group was lower than that in CUF group (P < 0.05), and the respiratory index in MUF group was higher than that in CUF group (P < 0.05).ConclusionThe modified ultrafiltration can effectively improve pulmonary function after operations for low weight infants.

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