Table 1. Demographic characteristics of the study population.
| All | |
| N Patients | 71 |
| Females | 100% |
| Age [years] | 45±15 (22; 71) |
| Height [cm] | 163±7 (150; 176) |
| Body weight [kg] | 67±13 (49; 87) |
| Body mass index [kg/m2] | 25.1±5.7 (18.2; 33.9) |
| ASA 1 | 40 (56%) |
| ASA 2 | 29 (41%) |
| ASA 3 | 2 (3%) |
| NYHA 1 | 57 (80%) |
| NYHA 2 | 14 (20%) |
| Serum Creatinine [mg/dL] | 0.7±0.1 (0.5; 1.0) |
| Gamma Glutamyl Transferase [U/L] | 19±14 (5; 59) |
| Gynaecological procedure <150 min | 43 (61%) |
| Gynaecological procedure <300 min | 23 (32%) |
| Major gynaecological procedure ≥300 min | 5 (7%) |
| PONV Prophylaxis | 50 (70%) |
| Duration of Anaesthesia [min] | 154±69 (69; 314) |
| Interval between 2 BCM-measurements [min]* | 189±68 (108; 354) |
| Preoperative IV Fluid Volume [mL] | 301±275 (0; 1000) |
| Total Perioperative IV Fluid Volume [mL] | 1929±866 (830; 4160) |
| Urinary Excretion [mL] | 337±209 (100; 1000) |
| Net perioperative fluid balance [mL] | 1600±741 (620; 3316) |
Continuous variables are reported as mean ± standard deviation, (5th and 95th percentile); categorical variables are presented as counts and frequencies. Abbreviations: ASA = American Society of Anaesthesiologists’ physical status classification system, NYHA = New York Heart Association functional classification, PONV = postoperative nausea and vomiting, IV = intravenous. Net perioperative fluid balance = total perioperative intravenous fluid volume, corrected for urinary excretion and blood loss. *In 5 cases, the interval between the BCM-measurements was >60 minutes longer than the duration of anaesthesia, due to logistical reasons.