Baseline cerebral oximetry values depend on non-modifiable patient characteristics.

Objective: The aim of the present study was to evaluate baseline regional cerebral oxygen saturation (rSO2) values and identify factors influencing preoperative rSO2 in elective minor surgery.

Study Design: Observational analysis post-hoc.

Patients And Methods: Observational post-hoc analysis of data for the patient sample (n=50) of a previously conducted clinical trial in patients undergoing tumourectomy for breast cancer or inguinal hernia repair.