About this trial
This randomized clinical trial aims to evaluate and compare the analgesic efficacy of the Serratus Posterior Superior Intercostal Plane (SPSIP) block and the Erector Spinae Plane (ESP) block in patients undergoing surgical stabilization of rib fractures. The primary outcome is the Visual Analog Scale (VAS) score within the first 24 hours after surgery. Secondary outcomes include total opioid consumption, requirement for rescue analgesia, block performance time, block-related and systemic side effects (hematoma, pneumothorax, local anesthetic systemic toxicity, vascular puncture, and infection), patient satisfaction assessed using a Likert scale, and quality of recovery assessed using the QoR-15 questionnaire.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patients aged 18-65 years
ASA physical status I-III
Scheduled for elective video-assisted thoracoscopic surgery
Body mass index (BMI) between 18 and 35 kg/m²
Disqualifiers
Refusal to participate
Allergy to local anesthetics
Infection at the injection site
Coagulopathy or ongoing anticoagulant therapy
Trial design
Parallel
Treatments tested in this trial
Erector Spinae Plane Block (ESP)
Procedure/SurgeryPatients in this group will receive an ultrasound-guided Erector Spinae Plane Block (ESP) with 30 mL of 0.25% bupivacaine hydrochloride injected into the fascial plane between the erector spinae muscle and the fifth vertebral transverse processes, 30 minutes before surgery.
Serratus Posterior Superior Intercostal Plane (SPSIP)
Procedure/SurgeryPatients in this group will receive an ultrasound-guided Serratus Posterior Superior Intercostal Plane (SPSIP) block with 30 mL of 0.25% bupivacaine hydrochloride injected into the fascial plane between the serratus posterior superior muscle and the third rib, 30 minutes before surgery.
Treatment groups
Trial outcomes
Primary outcomes
Postoperative pain intensity assessed using the Visual Analog Scale (VAS)
Postoperative pain intensity (VAS score) Postoperative pain will be assessed using the visual analog scale (VAS), ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain. Higher scores represent greater pain intensity. Measurements will be recorded at predefined time points within the first 24 hours after surgery.
Secondary outcomes
Total opioid consumption via patient-controlled analgesia (PCA)
Requirement for rescue analgesia
Block performance time
Block-related and systemic side effects
Sponsors and contacts
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