Ultrasound-guided erector spinae plane block in patients undergoing pediatric abdominal surgery: a randomized study

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Abstract

Background
Erector spinae plane block (ESPB) can provide effective analgesia in pediatric abdominal surgery Additionally, when used as an analgesic method in abdominal surgery, ESPB may increase regional intra-abdominal tissue oxygen saturation (rSO) throughout the operation. However, the number of related studies conducted on pediatric patients is insufficient.
Results
Fifty-two patients undergoing lower abdominal surgery were allocated into two groups, the ESPB (E) and the control (C). Group E received general anesthesia plus unilateral ultrasound-guided ESPB, and group C received general anesthesia alone. Intraoperative fentanyl consumption, Face, Legs, Activity, Cry, Consolability (FLACC) score, time to first rescue analgesia and adverse events were recorded over the first 24 h postoperatively. The rSO level was evaluated in both groups throughout the operation. The FLACC score was significantly lower in group E than in group C (<0.05). Four patients in group E required intraoperative fentanyl compared to 12 patients in group C (<0.05). The first rescue analgesic administration time was significantly longer in group E than in group C (<0.05). No significant difference in rSO values was detected between the groups (>0.05). However, in group E, rSO values were significantly increased after the block compared to the postinduction values.
Conclusions
ESPB provides effective perioperative analgesia in children undergoing low abdominal surgery. Although there was no significant difference in rSO values between the groups, ESPB administration consistently increases rSO over time.
Trial registration
The trial was registered at ClinicalTrials.gov before patient enrolment (-13.12.2018).

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