INFLUENCE OF VARIATION OF CARDIOPLEGIA ON SYSTEMIC CONDITION DURING CARDIOPULMONARY BYPASS

Abstract

To evaluate the influence of cardioplegia on systemic circulation during cardiopulmonary bypass(CPB), consecutive 179 cases were reviewed. Patients were divided in three groups: Group-I (n=79) were applied intermittent antegrade crystalloid cardioplegia, in Group-II (n=48) ante-and retrograde blood cardioplegia was applied intermittently and in Group-III (n=52) continuously. In Group-III, high potassium level crystalloid fluid was infused significantly much more than in other two groups and resulted over-hemodilution and hyperkalemia, and then more fluid removal by ECUM and more administration of NaHCO₃ were necessiated. Intermittent blood cardioplegia seemed to be more simple and preferable rather than continuous blood cardioplegia to maintain adequate systemic circulation during CPB.