Table 3.
Patient's baseline data in IVCCI-guided group and the standard group.
| Variable | Standard group (n = 63) | IVCCI-guided group (n = 59) | P -Value |
|---|---|---|---|
| Age, y | 54.2 ± 15.0 | 51.7 ± 12.4 | 0.194 |
| BMI, kg/m2 | 22.3 ± 2.1 | 21.8 ± 2.4 | 0.273 |
| ASA (I/II) | 24/39 | 29/30 | 0.218 |
| Weight, kg | 62.8 ± 8.1 | 65.0 ± 9.3 | 0.162 |
| Female sex, n (%) | 28 (44.4%) | 27 (45.8%) | 0.884 |
| Bupivacaine, mg | 13.0 ± 1.3 | 13.1 ± 1.5 | 0.456 |
| Block level, segment | 15.8 ± 0.8 | 15.7 ± 0.8 | 0.517 |
| Baseline MBP, mmHg | 92.1 ± 7.6 | 89.9 ± 7.1 | 0.101 |
| Baseline HR, beats/min | 76.0 ± 10.7 | 78.4 ± 9.8 | 0.200 |
| History of hypertension, n (%) | 16 (25.4%) | 18 (30.5%) | 0.529 |
| Use of b-blockers, n (%) | 5 (7.9%) | 7 (11.9%) | 0.467 |
| Use of ACE-inhibitors, n (%) | 10 (15.9%) | 11 (18.6%) | 0.685 |
| Surgery duration, min | 79.6 ± 11.8 | 82.3 ± 13.2 | 0.679 |
| dIVCmax, mm | 11.9 ± 2.0 | 12.3 ± 1.9 | 0.261 |
| IVCCI, % | 45.2 ± 4.3 | 47.7 ± 3.9 | 0.331 |
| IVCCI > 42%, n (%) | 35 (55.6%) | 37 (62.7%) | 0.422 |
| Type of surgery | |||
| Lower limb trauma surgery, n (%) | 20 (31.7%) | 17 (28.8%) | 0.725 |
| Lower abdominal surgery, n (%) | 15 (23.8%) | 16 (27.1%) | 0.675 |
| Gynecological surgery, n (%) | 11 (17.5%) | 8 (13.6%) | 0.553 |
| Urology, n (%) | 17 (27.0%) | 18 (30.5%) | 0.667 |
Data are expressed as means ± SDs, medians [interquartile ranges], or numbers (%). BMI, body mass index; ASA, American Society of Anesthesiologists; dIVCmax, the maximum diameter of IVC; dIVCmin, the minimum diameter of IVC; HR, heart rate; MBP, mean blood pressure; IVCCI, collapsibility index of inferior vena cava.