Effectiveness of Preoperative Orientation on the Incidence of Delirium in Patients Undergoing Coronary Artery Bypass Graft Surgery: Scoping Review

Postoperative delirium (POD) is a frequent and severe neuropsychiatric complication that occurs quite often after coronary artery bypass graft (CABG) surgery. It not only leads to prolonged intensive care unit (ICU) stay but also causes functional decay, increased expenditure, and death. The modifiable risk factors include psychological distress, lack of knowledge about the surgical and ICU environment, and reduced cognitive reserve. Preoperative orientation interventions are now considered non-pharmacological solutions for delirium prevention, however, no evidence mapping for CABG patients has been done. Objective: To systematically map and synthesize the existing evidence onpreoperative orientation-based interventions and their effectiveness in reducing the incidence of postoperative delirium in adult patients undergoing CABG surgery.