Table 3. Total dose of opioid and incidence of opioid-related side effects.
| Variables | c-PVI (n=41) | iv-PCA (n=38) | P value |
|---|---|---|---|
| Additional opioid dose (mg) | 14.0±11.7 | 10.5±10.9 | 0.180 |
| Total opioid dose including fentanyl in PCA (mg) | 14.0±11.7 | 20.8±10.4 | 0.008 |
| Side effects | |||
| Dizziness | 4 (9.8) | 8 (21.1) | 0.215 |
| Constipation | 5 (12.2) | 11 (28.9) | 0.093 |
| Pruritus | 1 (2.4) | 4 (10.5) | 0.190 |
| Nausea | 8 (19.5) | 9 (23.7) | 0.786 |
| Discontinuation of analgesics | 1 (2.4) | 8 (21.1) | 0.012 |
Values are presented as n (%). c-PVI, continuous paravertebral infusion; iv-PCA, intravenous patient-controlled analgesia.