Skip to main content

Table 2 Postoperative analgesics use based on when the plain TAP block was administered

From: Effect of preoperative versus postoperative use of transversus abdominis plane block with plain 0.25 % bupivacaine on postoperative opioid use: a retrospective study

Variables Overall
(N = 262)
Preoperative TAP
(n = 240)
Postoperative TAP
(n = 22)
P-value
PCA use, no. (%) 213 (81.3) 200 (83.3) 13 (59.1) 0.012
PCA type   0.003
 Morphine 172 (65.6) 165 (68.8) 7 (31.8)  
 Hydromorphone 31 (11.8) 26 (10.8) 5 (22.7)  
 Morphine + hydromorphone 10 (3.8) 9 (3.8) 1 (4.5)  
PCA amount, MME, mean (SD)
 Morphine 27.40 (57.37) 27.09 (51.87) 30.77 (101.32) 0.019
PCA duration, hours, mean (SD) 33.97 (64.30) 34.66 (66.22) 26.36 (37.48) 0.263
IV opioid use, no. (%) 54 (20.6) 46 (19.2) 8 (36.4) 0.102
IV opioid amount, mg, mean (SD) 1.80 (10.39) 1.38 (9.07) 6.42 (19.50) 0.051
Oral opioid amount, MME, mean (SD) 93.94 (153.61) 87.71 (117.82) 161.93 (360.53) 0.743
Discharge opioid, MME, mean (SD) 123.52 (123.01) 128.09 (126.78) 73.64 (48.03) 0.005
Prescription muscle relaxants on discharge, no. (%) 108 (41.4) 97 (40.6) 11 (50.0) 0.528
Opioid use on first postoperative follow-up, no. (%) 19 (7.3) 18 (7.5) 1 (4.5) 0.99
Opioid refill request at first postoperative follow up, no. (%) 3 (1.1) 2 (0.8) 1 (4.5) 0.605
  1. IV intravenous, PCA patient-controlled analgesia, SD standard deviation, TAP transversus abdominis plane, MME morphine milligram equivalent