Erector Spinae Plane Block for Children Undergoing Cardiac Surgeries via Sternotomy: A Randomized Controlled Trial

Abstract

Background: Ineffective management of postoperative pain following pediatric cardiac surgeries adversely affects a patient’s postoperative course. The erector spinae plane (ESP) block has been described in the literature regarding perioperative pain manage-ment. We hypothesized that bilateral ESP blocks in pediatric patients would decrease intraoperative fentanyl consumption, reduce the need for postoperative morphine consumption, and improve pain scores. Objectives: The aim of this double-blinded randomized controlled trial was to assess the efficacy and safety of bilateral ESP blocks in pediatric patients undergoing cardiac surgeries through a median sternotomy. Methods: The study involved 98 children aged 6 months to 7 years who were American Society of Anesthesiologists (ASA) II and III and scheduled for cardiac surgery through a median sternotomy. Patients were divided randomly into 2 groups: the ES group (n = 50) who received bilateral ultrasound-guided ESP blocks, and the N group (n = 48) who received no block. The primary outcome was the total dose of administered fentanyl intraoperatively. Secondary outcomes included morphine consumption in the first 24 hours postoperatively; the length of time before the first need for postoperative analgesia; and FLACC (face, legs, activity, consolability, and cry) scores at the first and second hours postoperatively and every 4 hours, with readings taken for a period of 24 hours. Results: There were statistically significantly higher levels of administered fentanyl intraoperatively (6.7 ± 3 vs 4.3 ± 1.9 µg.kg-1) and postoperative morphine consumption (0.5 ± 0.2 vs 0.4 ± 0.2 mg.kg-1) in the N group compared with the ES group (P < 0.001). Moreover, the timing of the first rescue analgesia was significantly delayed in the ES group compared with the N group (231.6 ± 104.5 vs 108.8 ± 47.8 minutes). Conclusions: Bilateral ultrasound-guided ESP blocks can be used to reduce perioperative opioid consumption in pediatric patients undergoing cardiac surgery through a sternotomy. It also can be used to decrease postoperative pain scores.