Table 2. Incidence of adverse effects; puncture time; success of puncture by once; press times of PCA.
| Variable | ESPB (n, %) | TPVB (n, %) | P value |
|---|---|---|---|
| Hypotension | 3, 6.7 | 10, 21.7 | 0.04 |
| Bradycardia | 0, 0 | 4, 8.7 | 0.04 |
| Hypertension | 3, 6.7 | 1, 2.2 | 0.29 |
| Tachycardia | 1, 2.2 | 0, 0 | 0.31 |
| PONV | 8, 17.8 | 11, 23.9 | 0.47 |
| Hematoma | 0, 0 | 5, 10.9 | 0.02 |
| Puncture time (min)a | 6.82±1.47 | 10.67±1.94 | 0.00 |
| Success of puncture by once | 37, 82.2 | 25, 54.3 | 0.00 |
| Press times of PCAa | 3.644±1.28 | 3.54±1.46 | 0.52 |
| Satisfaction with punctureb | 3.53±0.05 | 3.24±0.48 | 0.01 |
a, Mean ± SD. b, Mann-Whitney rank sum test. PCA, patient-controlled analgesia; ESPB, erector spinae plane block; TPVB, thoracic paravertebral block; PONV, postoperative nausea and vomiting.