Abstract
Reported are the beneficial use of membranous oxygenator on the respiratory function but controversy still exists in the superiority of the membranous oxygenator to the bubble oxygenator. Influence on the postperative respiratory index (RI) was compared between the group of membranous oxygenator (M-group, HF 4000: 24, CAPIOX-E: 9, CAPIOX-II: 2, MAXIMA: 8 cases) and bubble oxygenator (B-group, H 1700: 62 cases) with no significant difference in the age, BSA, MPAWP, MPAP, CI, Pa02 (Fi02 0.2) and type of cardiac diseases preoperatively and in the perfusion time, aortic cross-clamp time, lowest body temperature, fluid and blood balance, platelet count and free Hb level at the end of CPB. RI at 1st POD>2 was observed in 17 of 43 patients in M-group and 4 of 62 patients in B-group (p<0.05) and mean RI in the in 6 post operative hour and 1st POD was 2.07 in M-group and 1.18 in B-group (p<0.05), respectively despite no significant correlation between hemodynamics and RI, nor between oncotic pressure and RI, postoperatively. The data did not indicate the superiority of membranous oxygenator on the postoperative respiratory function.
