Secondary end points
| Factor | Serratus block (n=49) | Paravertebral block (n=51) | P value |
| Median MEQs in mg (IQR) | |||
| Operating room | 10.0 (10.0–10.0) | 10 (8.75–10.0) | 0.38 |
| PACU | 4.5 (2.0–7.0) | 0 (0–6.5) | 0.03 |
| PACU discharge to morning of POD1 | 2.0 (2.0–4.0) | 2.0 (0–4.0) | 0.24 |
| Antiemetics given in the PACU (%) | 19 (38.8%) | 8 (15.7%) | 0.01 |
| Median pain NRS scores in PACU (IQR) | |||
| Highest | 5.0 (4.0–7.0) | 4.0 (0–6.5) | 0.04 |
| Lowest | 0 (0–3.0) | 0 (0–0) | 0.01 |
| Median pain NRS scores from PACU discharge to morning of POD1 in mg (IQR) | |||
| Highest | 5.0 (3.0–6.0) | 3.0 (2.0–5.0) | <0.01 |
| Lowest | 1.0 (0–3.0) | 0 (0–1.0) | <0.01 |
| Average | 3.0 (2.0–4.0) | 2.0 (0.5–3.0) | 0.01 |
| Median Likert scale nausea morning of POD1 (IQR) | 0 (0–0) | 0 (0–0) | 0.63 |
| Median no of awakenings due to pain (IQR) | 0 (0–0) | 0 (0–0) | 0.31 |
Data are presented as median (IQR).
Test used: Wilcoxon-Mann-Whitney test (continuous factors), Fischer’s exact test (categorical). Likert scale: 0=nausea; 10=vomiting.
NRS, Numeric Rating Scale; PACU, postanesthesia care unit; POD, postoperative day.