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Table 2 Opioid usage during perioperative period

From: The effect of transversus abdominis plane block on the chronic pain after colorectal surgery: a retrospective cohort study

Opioid usage

Group P

(n = 179)

Group TP

(n = 128)

t

P

Intraoperative

 Sufentanil (ug)

64.8 ± 18.8

51.3 ± 12.6

−7.071

0.000*

 Remifentanil (mg)

1.4 ± 0.6

1.3 ± 0.5

−1.831

0.068

Postoperative

 Sufentanil usage at 24 h (ug)

45.1 ± 30.2

49.3 ± 34.0

1.141

0.255

 Sufentanil usage at 48 h (ug)

84.7 ± 49.1

90.6 ± 50.3

1.038

0.300

  1. Data are presented as Mean ± SD, compared with Group P, *P<0.05. Group P=PCIA only, Group TP = PCIA and TAP block