From May 1976 to January 1980,100 cases ofcardiac valve replacement performed at FuwaiHospital are *** made hetcroge-nous bioprosthetic bovine pericardial(ModelBN)and porcine aortic valve with elastic stent(Model BZ)w...
From May 1976 to January 1980,100 cases ofcardiac valve replacement performed at FuwaiHospital are *** made hetcroge-nous bioprosthetic bovine pericardial(ModelBN)and porcine aortic valve with elastic stent(Model BZ)were used.21 aortic valve replace-ment(AVR),72 mitral valve replacement(MVR)and 7 double valve replacements were *** of 106(81 BN and 25 BZ)bioprostheticvalves were *** characteristics of the BNand BZ prostheses are *** the patients operated upon,34% hadClass Ⅳ cardiac function(the New York HeartAssociation criteria).The operative mortality(13 cases)was 13%.There were 8 cases withClass Ⅳ function among the fatalities.87 casesare living,45 of 50 had Classes Ⅰ-Ⅱ improvementin cardiac function during 6-42 months’follow-up(mean 14.8 months).Postoperative radio-grams showed marked reductions in cardiac *** early results of these 2 types of Chinesemade bioprostheses are rather *** the bioprostheses in vivo and improvementof cardiac function evaluated by echocardio-graphy are briefly *** prosthetic dysfunction has been observ-ed,but long term durability of these valvesremains to be established.
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