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Table 4 Expected value of breakthrough pain per patient from POD1 to POD5

From: Single shot adductor canal block combined with intravenous patient-controlled analgesia can be effective as continuous adductor canal block in reducing opioid consumption and breakthrough pain after total knee arthroplasty

 

IV-PCA (n = 180)

C-ACB (n = 173)

PCA + sACB (n = 129)

p-value a

POD1

0.66

0.42

0.40

0.007 b

POD2

0.56

0.31

0.33

0.011 c

POD3

0.32

0.18

0.26

0.111

POD4

0.24

0.14

0.20

0.338

POD5

0.17

0.13

0.16

0.658

  1. IV-PCA Intravenous patient-controlled analgesia, C-ACB Continuous adductor canal block, sACB Single-shot adductor canal block, POD postoperative day
  2. a One-way analysis of variance
  3. b Post hoc (Bonferroni’s method) analysis showed that expected value of C-ACB or PCA + sACB was lower than that of IV-PCA
  4. c Post hoc (Bonferroni’s method) analysis showed that expected value of C-ACB was lower than that of IV-PCA
  5. * Statistically significant at p < 0.05