Outcomes | QLB (n=27) | ITM (n=27) | P value |

Median intraoperative remifentanil consumption (IQR) in μg/kg | 4.8 (3.5–8.6) | 8.9 (3.6–11.9) | 0.12 |

Intraoperative hypotension, n (%) | 3 (11.1) | 3 (11.1) | >0.99 |

Mean intraoperative mean SPI score (SD) | 53.6 (6.8) | 50.5 (7.5) | 0.12 |

Median cumulative opioid consumption converted to intravenous morphine equivalent (IQR) in mg | |||

At PACU | 4.5 (3.8–6.8) | 4.5 (0–6) | 0.58* |

At 24 hours | 35.3 (19.0–46.1) | 7.5 (4.5–13.3) | <0.001* |

At 48 hours | 59.1 (29.2–73.3) | 21.8 (15.0–41.7) | <0.01* |

At 72 hours | 65.2 (34.3–95.6) | 44.7 (19.5–66.0) | 0.06* |

Quality of sleep on the first night (Likert scale†), n (%) | 0.05 | ||

Dissatisfied or neutral (1–3) | 14 (51.9) | 7 (25.9) | |

Satisfied (4, 5) | 13 (48.1) | 20 (74.1) | |

Patient satisfaction with pain relief at 24 hours (Likert scale†), n (%) | 0.03 | ||

Dissatisfied or Neutral (1–3) | 11 (40.7) | 3 (11.1) | |

Satisfied (4, 5) | 16 (59.3) | 24 (88.9) | |

Mean total QoR-15 postoperative score at 48 hours (SD) (0–150) | 87.9 (30.1) | 100 (32.8) | 0.33* |

Mean physical score (SD) (0–90) | 45.4 (18.2) | 54.3 (21.7) | 0.21* |

Mean mental score (SD) (0–60) | 42.5 (14.6) | 45.7 (13.2) | 0.84* |

Median time to first flatus (IQR) in days | 2.3 (2.0–2.5) | 2.0 (1.8–2.3) | 0.19 |

Median length of hospital stay (IQR) in days | 10 (9–11) | 10 (9–10) | 0.75 |

Wilcoxon rank sum tests or t-tests used for continuous variables, with p value set at 0.05.

χ

^{2}or Fisher’s exact tests were used for categorical variables, with p value set at 0.05.*Individual p values result from Bonferroni correction.

†Likert scale, where 1=very dissatisfied, 2=dissatisfied, 3=neutral, 4=satisfied, 5=very satisfied.

PACU, postanesthetic care unit; QoR-15, Quality of recovery 15 questionnaire; SPI, Surgical Pleth Index.