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Implementation of a quadratus lumborum regional block protocol with assessment of effectiveness for patients with appendicitis: a quality improvement project.
Pediatric Surgery International 2023 September 8
PURPOSE: This study analyzes the implementation of the routine use of quadratus lumborum blocks (QLBs) on postoperative pain and opioid consumption among children undergoing laparoscopic appendectomy compared to those not receiving regional anesthesia.
METHODS: Children undergoing laparoscopic appendectomy within a multi-hospital children's healthcare system were retrospectively reviewed from 2017 to 2021. Patients were stratified by appendicitis type (uncomplicated vs. complicated). Pain scores and opioid consumption in the post-anesthesia care unit (PACU) and within the first 24 h postoperatively were compared by block status (no block [NB] vs. QLB) and appendicitis type.
RESULTS: 2033 patients were reviewed, and 610 received a QLB. The frequency of rescue opioid use was reduced in the PACU (uncomplicated: QLB 46.6% vs. NB 54.6%, p = 0.005; complicated: QLB 28.5% vs. NB 39.9%, p = 0.01) and postoperatively (complicated: QLB 33.7% vs. NB 52.9%, p < 0.001) for those who received a QLB. This resulted in reduced opioid consumption as measured by morphine milligram equivalents per kilogram postoperatively.
CONCLUSION: QLBs can be safely administered in children and provide improvements in opioid consumption postoperatively. QLBs should remain a strongly favored regional anesthetic technique because of their wide applicability for abdominal surgeries to minimize rescue opioid analgesic use.
TYPE OF STUDY: Retrospective comparative study.
LEVEL OF EVIDENCE: Level III.
METHODS: Children undergoing laparoscopic appendectomy within a multi-hospital children's healthcare system were retrospectively reviewed from 2017 to 2021. Patients were stratified by appendicitis type (uncomplicated vs. complicated). Pain scores and opioid consumption in the post-anesthesia care unit (PACU) and within the first 24 h postoperatively were compared by block status (no block [NB] vs. QLB) and appendicitis type.
RESULTS: 2033 patients were reviewed, and 610 received a QLB. The frequency of rescue opioid use was reduced in the PACU (uncomplicated: QLB 46.6% vs. NB 54.6%, p = 0.005; complicated: QLB 28.5% vs. NB 39.9%, p = 0.01) and postoperatively (complicated: QLB 33.7% vs. NB 52.9%, p < 0.001) for those who received a QLB. This resulted in reduced opioid consumption as measured by morphine milligram equivalents per kilogram postoperatively.
CONCLUSION: QLBs can be safely administered in children and provide improvements in opioid consumption postoperatively. QLBs should remain a strongly favored regional anesthetic technique because of their wide applicability for abdominal surgeries to minimize rescue opioid analgesic use.
TYPE OF STUDY: Retrospective comparative study.
LEVEL OF EVIDENCE: Level III.
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