| Age (years), mean (SD) | | 69.1 (10.2) |
| Median (IQR) | | 69 (13) |
| Weight (kg) | | 78.4 (11.3) |
| | 78 (15) |
| Height (cm) | | 171.9 (5.9) |
| | 172 (8) |
| ASA physical status category, n (%) | I | 151 (37.6) |
| II | 239 (59.5) |
| III | 12 (2.9) |
| Comorbidities, n (%) |
| Hypertension | | 174 (43.3) |
| Type 2 diabetes mellitus | | 81 (20.1) |
| Coronary artery disease | | 47 (11.7) |
| Arrhythmia | | 48 (11.9) |
| Chronic obstructive pulmonary disease | | 36 (9.0) |
| Chronic renal failure | | 5 (1.2) |
| Thyroid disease | | 8 (2.0) |
| Obstructive sleep apnea syndrome | | 2 (0.5) |
| Ankylosing spondylitis |
| | TURP | 153 (38.1) |
| Type of surgery, n(%) | TURBT | 114 (28.4) |
| Cystoscopy | 84 (20.9) |
| Internal urethrotomy | 8 (2.0) |
| Ureteroscopy | 2 (0.5) |
| Cystolithotomy | 7 (1.7) |
| Endoscopic ureter stone | 14 (3.5) |
| TUR biopsy | 20 (5) |
| Duration of surgery (min), mean (SD) 53.4 (26.0) | | 53.4 (26.0) |
| Type of anesthesia, n (%) | Spinal | 293 (72.9) |
| General anesthesia | 109 (27.1) |
| Intraoperative penile erection,n(%) | Yes | 9 (2.2) |
| No | 393 (97.8) |
