Bilateral erector spinae plane blocks in children undergoing cardiac surgery: A randomized, controlled study.

STUDY OBJECTIVE

We aimed to test the hypothesis that erector spinae plane block (ESPB) provides efficient analgesia and reduces postoperative morphine consumption in children undergoing cardiac surgery with median sternotomy.

DESIGN

A prospective, blinded, randomized, controlled study.

SETTING

A tertiary university hospital, operating room and intensive care unit.

PATIENTS

Forty children aged 2-10 years, who underwent cardiac surgery with median sternotomy. The patients were randomly divided into the block group (Group B) and the control group (Group C).

INTERVENTIONS

Group B (n = 20) were treated with ultrasound-guided bilateral ESPB at the level of the T4-T5 transverse process, whereas no block was administered in Group C (n = 20). In all children, intravenous morphine at 0.05 mg/kg was used whenever the modified objective pain score (MOPS) ≥4 for postoperative analgesia.

MEASUREMENTS

The MOPS and Ramsay sedation score (RSS) were assessed at 0, 1, 2, 4, 6, 8, 10, 12, 16, 20 and 24 h postoperatively. Total morphine consumption at 24 h, extubation time and length of intensive care unit (ICU) stay was also evaluated and recorded.

MAIN RESULTS

Bilateral ESPB significantly decreased the consumption of morphine in the first 24 h, postoperatively. During the postoperative 24-h follow-up, 11 children in Group C requested morphine and the cumulative dose of morphine was 0.83 ± 0.91 mg, while 4 children in Group B requested morphine and the cumulative dose of morphine was 0.26 ± 0.59 mg (p = 0.043). There was no significant difference between Groups B and C in terms of MOPS and RSS values, extubation time or length of ICU stay.

CONCLUSION

Ultrasound-guided bilateral ESPB with bupivacaine provides efficient postoperative analgesia and reduces postoperative morphine consumption at 24 h in children undergoing cardiac surgery.