Abstract: ObjectiveTo study the preoperative factors of perioperative red blood cells suspension (CRCs) consumption in cardiopulmonary bypass (CPB) valve surgery. MethodsClinical data from 71 adult patients of selective CPB valve surgery during December 2012 to November 2014 were collected and analyzed. By binary logistic regression to find out risk factors of perioperative CRCs large consumption (≥8 U) in 5 variables (including age, body mass index (BMI), left ventricular ejection fraction (LVEF), preoperative creatinine (Cr), alanine aminotransferase (ALT), peripheral vascular disease history, atrial fibrillation and flutter in 2 weeks before surgery, cardiac function). ResultsIn single variable logistic regression, 5 variables were in the equation (age, BMI, LVEF, preoperative Cr and peripheral vascular disease history, P <0.10, respectively.). In multivariable logistic regression, 3 variables were in the equation (age, preoperative Cr and BMI, P<0. 10, OR = 2.128, 4.244 and 0. 264, respectively). ConclusionMore blood should be prepared for patients of elder, higher preoperative Cr and less BMI due to the possibility of the patients with perioperative CRCs in needs of large consumption(≥8 U).

Key words: Cardiopulmonary, bypass, Valve, surgery, CRCs, consumption, Preoperative, factors