Table 2.
Perfusion index change ratio and temperature change over time.
| Group R (n = 57) | Group N (n = 35) | p-Value | |
|---|---|---|---|
| PI change ratio | |||
| T5 | 1.67 ± 4.2 * | 0.81 ± 1.6 | 0.029 |
| T15 | 1.47 ± 2.4 | 0.97 ± 2.1 | 0.072 |
| T30 | 6.15 ± 36.4 | 0.72 ± 1.8 | 0.104 |
| Temperature change | |||
| T5 | 0.05 ± 0.3 | 0.01 ± 0.3 | 0.391 |
| T15 | −0.02 ± 0.4 | −0.01 ± 0.3 | 0.824 |
| T30 | −0.08 ± 0.4 | −0.09 ± 0.4 | 0.958 |
PI: perfusion index, T0: before treatment, T5: 5 min following block, T15: 15 min following block, T30: 30 min following block, PI change ratio (PI at each time point—PI at T0/PI at T0), Temperature change (temperature at each time point—temperature at T0), Group R: patients who showed a reduction of ≥50% on the numeric rate scale for pain, 30 min following the block, Group N: patients who showed a reduction of less than 50%; * p-value < 0.05 was considered statistically significant.