Factors Associated with Poor Satisfaction with Anesthesia in Patients Who Had Previous Surgery: A Retrospective Study

Background: As most studies investigating patient satisfaction with anesthesia have some bias, previous results may underrepresent the true level of dissatisfaction with anesthesia. Objectives: This study aimed to identify factors associated with patient satisfaction with anesthesia. Methods: Data from patients aged≥ 20 years who had previous surgery and were scheduled for additional surgery were obtained retrospectively through preoperative interviews conducted. Informed consent for anesthesia was obtained by an anesthesiologist prior to the additional surgery. The patients were assigned to one of four anesthesia satisfaction levels, then were categorized into two groups; a high satisfaction group and a low satisfaction group. After comparing parameters between the two groups, logistic regression analysis was performed to identify factors that were negatively associated with satisfaction with anesthesia. Results: Of 478 patients interviewed subjects, 469 patients were analyzed. Five individuals were excluded because they were unable to provide informed consent, and four subjects were excluded because they were aged 10 years at the time of their previous surgery. Age 65 years, previous surgery for malignancy, female sex, estimated operation duration 3 hours, and American Society of Anesthesiologists Physical Status score 1 or 2 were included in a logistic regression analysis. Age 65 years, previous surgery for malignancy, and female sex were predictive of poor patient satisfaction with anesthesia. Reasons for poor satisfaction with anesthesia included postoperative shivering and chills, fear of surgery, ineffective spinal anesthesia, and postoperative surgery-related pain. Of the patients awaiting surgery for malignancy, 57.3% had previous surgery for malignancy. Conclusions: Age 65 years, previous surgery for malignancy, and female sex were negatively associated with patient satisfaction with anesthesia. These factors should be considered when preparing patients for future procedures to improve postoperative patient satisfaction.