Main variables |
Preoperative VAS score (0–10/10). 0 means absence of pain and 10 the severest pain imaginable |
Postoperative VASscore (0–10/10) at 1st, 2nd, 4th, 6th postoperative days and at hospital discharge |
(*)Range of sufentanil requirements (micro-pills per postoperative day) |
1: 0–2 micro-pills (equal or less than 30 mcg/day) |
2: 2–4 micro-pills (30–60 mcg/day) |
3: 5–10 micro-pills (75–150 mcg/day) |
4: More than 10 micro-pills (more than 150 mg/day) |
(*) Range of morphine requirements per day (continuous perfusion plus PCA) |
1: 0–30 mg/day |
2: 30–60 mg/day |
3: 60–150 mg/day |
4: More than 150 mg/day |
Requirement of methadone for breakthrough severe pain crisis |
0: no use |
1: < 10 mg/day |
2: 10–15 mg/day |
3: More than 15 mg/day |
Secondary variables |
Length of hospital stay (days) |
Preoperative opioid requirement |
0: No opioids or occasionally |
1: Weak opioids (tramadol, codeine, tapentadol) |
2: Strong opioids (fentanyl, oxycodone, morphine, buprenorphine) |
3: Strong opioid combination |
Opioid requirement at discharge |
0: No opioids |
1: Decrease compared to preoperative (between 20 and 30%) |
2: Same dose compared to preoperative |
3: More dose compared to preoperative |
Postoperative nausea and vomiting |
1: Yes |
2: No |
Paralytic ileus |
1: Yes |
2: No |
Constipation |
1: Yes |
2: No |
Requirement of Anxiolytics |
0: No requirements |
1: Once/day |
2: Twice/day |
3: 3 Times/day |
4: More than 3 times/day |