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  • Title: Evaluation of ultrasound-guided posterior quadratus lumborum block for postoperative analgesia after laparoscopic gynecologic surgery.
    Author: Ishio J, Komasawa N, Kido H, Minami T.
    Journal: J Clin Anesth; 2017 Sep; 41():1-4. PubMed ID: 28802593.
    Abstract:
    STUDY OBJECTIVE: This study aimed to determine the efficacy of ultrasound-guided posterior quadratus lumborum block (QLB) in treating postoperative pain following laparoscopic gynecologic surgery. DESIGN: Prospective randomized controlled study. PATIENTS: Seventy adult patients scheduled for elective laparoscopic gynaecological surgery under general anesthesia. INTERVENTION: This randomized controlled study involved two groups of adult females who were scheduled to undergo laparoscopic gynecologic surgery under general anesthesia. Patients were randomly assigned to either the QLB group or Control group. In the QLB group, patients underwent posterior QLB with 20mL of 0.375% ropivacaine on each side. Patients were blinded to treatment. MEASUREMENTS: At 0, 1, 3, and 24 hours after anesthesia recovery, evaluator recorded the severity of postoperative pain in movement and at rest using a Numeric Rating Scale (NRS). We also evaluated the severity of nausea using NRS and number of additional analgesics. MAIN RESULTS: Immediately after recovery from anesthesia, the NRS score for pain in movement did not differ significantly between groups. NRS scores for pain both in movement and at rest were significantly higher in the Control group than in the QLB group at 1, 3, and 24h after recovery from anesthesia. CONCLUSION: Our results suggest that posterior QLB significantly reduces postoperative pain in movement and at rest following laparoscopic gynecologic surgery.
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