• Dis. Colon Rectum · Feb 2019

    Randomized Controlled Trial Comparative Study

    Randomized Clinical Trial Comparing Laparoscopic Versus Ultrasound-Guided Transversus Abdominis Plane Block in Minimally Invasive Colorectal Surgery.

    • Karen N Zaghiyan, Brian J Mendelson, Matthew R Eng, Gayane Ovsepyan, James M Mirocha, and Phillip Fleshner.
    • Division of Colon and Rectal Surgery, Cedars-Sinai Medical Center, Los Angeles, California.
    • Dis. Colon Rectum. 2019 Feb 1; 62 (2): 203-210.

    BackgroundTransversus abdominis plane block may improve analgesia after colorectal surgery; however, techniques remain unstandardized and results are conflicting.ObjectiveThe purpose of this study was to compare laparoscopic and ultrasound-guided transversus abdominis plane block with no block in minimally invasive colorectal surgery.DesignThis was a randomized controlled trial.SettingsThe study was conducted at an urban teaching hospital.PatientsPatients undergoing laparoscopic colorectal surgery were included.InterventionsThe intervention included 2:2:1 randomization to laparoscopic, ultrasound-guided, or no transversus abdominis plane block.Main Outcome MeasuresMorphine use in the first 24 hours after surgery was measured.ResultsThe study cohort included 107 patients randomly assigned to laparoscopic (n = 41), ultrasound-guided (n = 45), or no transversus abdominis plane block (n = 21). Mean age was 50.4 years (SD ± 18 y), and 50 patients (47%) were men. Laparoscopic transversus abdominis plane block was superior to ultrasound-guided (p = 0.007) and no transversus abdominis plane block (p = 0.007), with median (interquartile range) total morphine used in the first 24 hours postoperatively of 17.6 mg (6.6-33.9 mg), 34.0 mg (16.4-44.4 mg), and 31.6 mg (18.4-44.4 mg). At 48 hours, laparoscopic transversus abdominis plane block remained superior to ultrasound-guided (p = 0.03) and no transversus abdominis plane block (p = 0.007) with median (interquartile range) total morphine used at 48 hours postoperatively of 26.8 mg (15.5-45.8 mg), 44.0 mg (27.6-70.0 mg), and 60.8 mg (34.8-78.8 mg). Mean hospital stay was 5.1 ± 3.1 days without any intergroup differences. Overall complications were similar between groups.LimitationsTreatment teams were not blinded and there was operator dependence of techniques and variable timing of the blocks.ConclusionsLaparoscopic transversus abdominis plane block is superior to ultrasound-guided and no transversus abdominis plane block in achieving pain control and minimizing opioid use in the first 24 hours after colorectal surgery. A large, multicenter, randomized trial is needed to confirm our findings. See Video Abstract at http://links.lww.com/DCR/A822.

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