Journal
JOURNAL OF CLINICAL ANESTHESIA
Volume 67, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jclinane.2020.110007
Keywords
Acute pain; Duloxetine; Modified radical mastectomy; Serotonin norepinephrine reuptake inhibitors
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Objective: Duloxetine has been recently used as a part of multimodal analgesia in perioperative settings, yet the optimal dose of Duloxetine is not determined. Design: A parallel, randomized, placebo-controlled trial. Setting: Tertiary level oncology center. Patients: 88 female patients with breast cancer were subjected to modified radical mastectomy (MRM) with ASA class I and II were recruited. Intervention: Participants were randomly allocated into 4 equal groups received 2 h preoperatively, placebo (D0, N = 22), Duloxetine 30 mg (D30, N = 22), Duloxetine 60 mg (D60, N = 22) and Duloxetine 90 mg (D90, N = 22) tablet. Measurements: The primary outcome; 24 h cumulative postoperative morphine consumption and the secondary outcomes; VAS score of pain intensity, quality of recovery (QoR-40), time to Aldrete 9, and side effects (sedation and vomiting) were measured. Results: The median (IQR) consumption of morphine (mg) in the first postoperative 24 h was significantly decreased in both (D60 and D90) groups compared to (D0 and D30) groups, P < 0.001(Bonferroni corrected), however, a non-significant reduction was observed between D90 group vs. D60 group and D30 group vs. D0 group, P = 0.595 and P = 0.462 respectively, D60 vs. D0; 0(0-6) vs. 10(9-12), D60 vs. D30; 0(0-6) vs. 9(8-11), D90 vs. D0; 0(0-5) vs. 10(9-12), D90 vs. D30; 0(0-5) vs. 9(8-11), D90 vs. D60; 0(0-5) vs. 0(0-6), D30 vs. D0; 9(8-11) vs. 10(9-12), patients in D90 group took longer time to recover from anesthesia time to Aldrete 9 and showed an increased level of sedation in comparison with other groups, vomiting was more frequent in the D90 group. Conclusion: Preoperative oral Duloxetine of 60 mg, for patients subjected to MRM is the optimal dose considering its analgesic efficacy and side effects. .
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