Erector Spinae Plane Block Combined with Serratus Anterior Plane Block Versus Thoracic Paravertebral Block for Postoperative Analgesia and Recovery After Thoracoscopic Surgery: A Randomized Controlled Non-inferiority Clinical Trial

Abstract

Objective

This study aimed to compare the postoperative analgesia and recovery of ultrasound-guided erector spinae plane block combined with serratus anterior plane block (ESPB combined with SAPB) versus thoracic paravertebral block (PVB) after thoracoscopic surgery.

Methods

Ninety-two patients who underwent video-assisted thoracoscopic surgery (VATS) were randomly divided into group S (n=46) and group P (n=46). After anesthesia induction, the same anesthesiologist performed ultrasound-guided ESPB at T5 and T7 levels combined with SAPB at the level of the fifth rib in the midaxillary line in group S and ultrasound-guided PVB at T5 and T7 levels in group P. Patients in both groups were given 40 mL of 0.4% ropivacaine. Eighty-six patients completed the study (group S, n=44; group P, n=42). The morphine consumption, visual analogue scale (VAS) scores at rest and coughing, and frequency of remedial analgesia were recorded at 1, 2, 4, 8, and 24 h postoperatively. Pulmonary function parameters were recorded at 1, 4, and 24 h postoperatively, and the quality of recovery (QoR)-15 score at 24 h postoperatively. The adverse effects, duration of chest tube drainage and length of stay were also recorded.

Results

The morphine consumption at postoperative 4 and 8 h and the incidence of ipsilateral shoulder pain (ISP) were significantly lower in group S than in group P. The QoR-15 questionnaire score at postoperative 24 h was significantly lower in group P than in group S (P<0.05). The morphine consumption was lower at 24 h postoperatively in group S than in group P, with no significant difference found yet. The morphine consumption at other observed times, VAS scores, pulmonary function parameters, frequency of remedial analgesia, duration of chest tube drainage, length of stay, and incidence of other adverse events were comparable between group S and group P.

Conclusion

Ultrasound-guided ESPB combined with SAPB is non-inferior to PVB in terms of morphine consumption at postoperative 24 h and postoperative recovery. But, this approach can significantly reduce morphine consumption in the early postoperative period (0–8 h) after thoracoscopy with lower incidence of ISP. It is a simpler and safer operation.

Keywords

erector spinae plane block / serratus anterior plane block / thoracic paravertebral block / postoperative analgesia / postoperative recovery

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