ALB and myalgic encephalomeyelitis/chronic fatigue syndrome: Positive factors increasing CFS included high albumin (OR 0.21, p = 0.02), intraoperative i.v. heparin bolus (OR 0.15, p = 0.08), intraoperative catecholamine treatment (OR 0.15, p = 0.009), and nonsmoking (OR 0.18, p = 0.1).<h4>Conclusion</h4>Key preventive measures against complications include optimizing nutritional status and albumin levels, administering intraoperative heparin and catecholamines, and abstaining from alcohol.