Pericapsular nerve group block in hip arthroplasty: A prospective randomized trial
Keywords:analgesics, opioid, bupivacaine, arthroplasty, replacement, hip, pain post-operative, nerve block, ultrasonography, morphine, analgesia
Objectives: This study aimed to evaluate the analgesic effect of the ultrasound-guided pericapsular nerve group (PENG) block in hip arthroplasty (HA) surgery.
Design: A prospective double-blinded, randomized study.
Setting: Tertiary institutional clinical care.
Participants: Fifty patients, more than 50 years old of both genders, were chosen according to the American Society of Anesthesiologists classification, with physical status I–III, and scheduled for unilateral HA surgeries.
Interventions: Patients were randomized to receive either a sham PENG block with 20 mL of normal saline (control group) or a PENG block with 20 mL of bupivacaine 0.25 percent (PENG group).
Main outcome measures: From the onset of the first request for rescue opioid analgesia, preoperative pain scores before and after block (at rest and with a raised straight leg), the incidence of quadriceps weakness after the block, intraoperative fentanyl consumption, post-operative pain scores, and morphine consumption, besides the presence and frequency of adverse events, were recorded.
Results: The patients undergoing PENG block with bupivacaine had prolonged durations before the first analgesic request, lower perioperative pain scores, less intraoperative rescue fentanyl, and less post-operative morphine consumption than the control group, with nonsignificant motor weakness after the block and similar adverse events.
Conclusions: The PENG block provided effective perioperative analgesia for HA with prolonged duration of analgesia, nonsignificant motor effects, reduced perioperative opioids consumption, and no major side effects.
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