ALB and decubitus ulcer: In this study, none of the preoperative physical condition (i.e., past disease, hemoglobin, hematocrit, and smoking habit), nutrition (i.e., BMI and albumin), and intraoperative status (time of the operation, total time of diastolic blood pressure less than 60 mmHg, application of heart-lung machine, body temperature after procedure, and shear power and wetness) variables measured emerged as statistically significant risk factors for pressure ulcer development.