ALB and Hypertension: However, after adjusting for factors that are potentially related to postoperative complications (including preoperative SCr, preoperative albumin, preoperative potassium, length of procedure, hypertension, ASA score, type of surgery, NYHA grade of cardiac function, and wound classification), no differences were found in the risk of postoperative complications between the two groups, indicating that preoperative dialysis modality has little or no effect on postoperative outcomes of chronic PD patients.