Table 1 Patients’ characteristics
|  | Middle age (45–64 years) n = 25 | Early elderly (65–74 years) n = 25 | Late elderly (≥ 75 years) n = 25 | p values |
|---|---|---|---|---|
Age, years | 55.6 (5.7) | 70.3 (2.6) | 79.4 (3.5) | Â |
Sex, male/female | 7/18 | 12/13 | 11/14 | 0.311 |
BMI, kg/m2 | 23.4 (3.6) | 22.8 (4.0) | 24.0 (2.8) | 0.518 |
ASA PS, I/II | 8/17 | 4/21 | 1/24 | 0.036 |
Use of ACEIs/ARBs | 1 | 4 | 5 | 0.319 |
Anesthetics for induction | ||||
 Propofol, mg/kg | 1.4 (0.2) | 1.3 (0.2) | 1.1 (0.2) | < 0.001 |
 Remifentanil, µg/kg/min | 0.32 (0.06) | 0.29 (0.04) | 0.28 (0.04) | 0.016 |
Anesthetics for maintenance | ||||
 Desflurane, % | 4.0 (0.5) | 3.9 (0.5) | 3.7 (0.3) | 0.078 |
 Remifentanil, µg/kg/min | 0.23 (0.05) | 0.23 (0.07) | 0.20 (0.05) | 0.135 |
Surgery type | ||||
 Gastrointestinal surgery | 3 | 1 | 10 |  |
 Orthopedic surgery | 2 | 1 | 0 |  |
 ENT surgery | 5 | 8 | 1 |  |
 Ophthalmology surgery | 1 | 2 | 4 |  |
 Urologic surgery | 2 | 3 | 6 |  |
 Breast surgery | 6 | 6 | 2 |  |
 Gynecological surgery | 6 | 4 | 2 |  |