Table 1.
Baseline demographic characteristics and post-operative analgesic profile in studied groups
| Variable | Group A | Group B | (95% CI) Mean difference |
P value |
|---|---|---|---|---|
| Age (yr)a | 54.8 ± 14.8 | 48.9 ± 18.2 | 0.177 | |
| BMI (kg/m²)a | 24.3 ± 2.8 | 24.1 ± 4.1 | 0.967 | |
| Duration of surgery (min)a | 95.0 ± 19.6 | 90.7 ± 23.5 | 0.310 | |
| ASAb | ||||
| 1 | 15 (42.9) | 24 (68.6) | 0.053 | |
| 2 | 19 (54.3) | 11 (31.4) | ||
| 3 | 1 (2.9) | 0 (0.0) | ||
| Side of hernia surgery | ||||
| Left | 13 (37.1) | 11 (31.4) | 0.615 | |
| Right | 22 (62.9) | 24 (68.6) | ||
| Patients requiring rescue analgesiac | 19 (54.3) | 35 (100) | < 0.001 | |
| Time to the first request for rescue analgesia (min)d | 360 (180–360) | 180 (180–360) | < 0.001 | |
| Total opioid consumption in the first 24 hr (morphine equivalents in mg)a | 3.71 ± 3.90 | 12.14 ± 4.90 | (–10.54, –6.32) –8.43 |
< 0.001 |
Data is expressed as mean ± standard deviation, number (%), or median (interquartile range).
Group A: ilioinguinal iliohypogastric nerve block with ropivacaine, Group B: ilioinguinal iliohypogastric nerve block with normal saline, CI: confidence interval, BMI: body mass index, ASA: American Society of Anesthesiologists physical status class.
aUnpaired t-test. bChi-square test. cFischer’s exact test. dMann–Whitney U-test. P < 0.05 is considered statistically significant.