Table 2 Changes in the quantity of opiate patient-controlled analgesia (PCA) usage between successive 24 hours intervals, during the first 96 hours following TASF (SD, standard deviation)
After surgery | Mean opiate usage | Difference | Significance |
|---|---|---|---|
(Hours) | (μg/kg) ± SD |  | (p < 0.01) |
0 – 24 | 445 ± 365 |  |  |
24 – 48 | 841 ± 300 | Increased | p < 0.0001 |
24 – 48 | 841 ± 300 |  |  |
48 – 72 | 565 ± 307 | Decreased | p = 0.0002 |
48 – 72 | 565 ± 307 |  |  |
72 – 96 | 238 ± 314 | Decreased | p < 0.0001 |