Supplementary Material

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Abstract

This study aimed to determine the prevalence and risk factors of urinary retention after endoscopic sinus surgery performed under general anesthesia.

We retrospectively analyzed the records of patients who underwent endoscopic sinus surgery at our institute under general anesthesia between January 2018 and December 2019. Patients with prior diagnoses of urologic or gynecologic disease were excluded.We enrolled and categorized 294 patients based on the presence of urinary retention. Clinical characteristics, intraoperative findings, and postoperative medications were reviewed, and regression analyses were performed to identify risk factors associated with postoperative urinary retention after endoscopic sinus surgery.

The overall incidence of urinary retention was 18.02%. Univariate and multivariate regression analyses indicated that old age (odds ratio, 1.072; 95% confidence interval, 1.042–1.103), male sex (odds ratio, 12.293; 95% confidence interval, 3.849–39.262), and opioid use in the post-anesthesia care unit (odds ratio, 3.647; 95% confidence interval, 1.496–8.893) were associated with urinary retention after endoscopic sinus surgery.

Urinary retention may be common after endoscopic sinus surgery performed under general anesthesia. To reduce the prevalence of this condition, opioid use in the post-anesthesia care unit should be carefully considered, particularly in older male patients.