About this trial
This study aims to evaluate the efficacy of cervical erector spinae plane block (ESPB) in managing postoperative pain following proximal humerus fracture repair in patients receiving general anesthesia.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age: 18-70 years old.
Adults scheduled for unilateral proximal humerus open reduction and internal fixation (ORIF).
American Society of Anesthesiologists (ASA) physical status I-II patients.
Disqualifiers
Patient refusal.
Coagulopathy [International Normalized Ratio (INR) >1.4, platelets <100,000/mm³].
Local infection at the block site.
Allergy to local anesthetics or opioids.
Trial design
Parallel
Treatments tested in this trial
Cervical erector spinae plane block
DrugPatients will receive cervical erector spinae plane block (ESPB) after the induction of general anesthesia.
General anesthesia
DrugPatients will receive general anesthesia alone with no block.
Treatment groups
Trial outcomes
Primary outcomes
Degree of pain
Each patient will be instructed about postoperative pain assessment with the visual analog scale (VAS). VAS (0 represents "no pain" while 10 represents "the worst pain imaginable"). VAS will be assessed at 4, 8, 12, 18, and 24 h after surgery.
Secondary outcomes
Intraoperative fentanyl consumption
Top-up doses of fentanyl 0.5 μg/kg will be given if hemodynamics increase above 20% of preoperative baseline values, and can be repeated if there is no improvement after 10 minutes (maximum dose is 2 μg/kg for the whole procedure)
Total amount of nalbuphine consumption
Rescue analgesia will be provided with intravenous nalbuphine 0.1 mg/kg when visual analog scale (VAS) is ≥4, which may be repeated after 30 minutes if pain persists (maximum total dose of 20 mg/6 hours), with appropriate monitoring.
Time to the 1st rescue analgesia
Time to the first request for the rescue analgesia will be recorded from end of surgery to first dose of nalbuphine administered.
Diaphragmatic excursion
Diaphragmatic excursion will be assessed using ultrasound.
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