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RECRUITING Not applicable ClinicalTrials.gov

Shoulder Pericapsular Block Versus Interscalene Block in Arthroscopic Shoulder Surgery

Sponsor: Marmara University • ClinicalTrials.gov ID: NCT07486349

Registry updated: 2026-10-09
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Description

This randomized controlled trial aims to compare the incidence of hemidiaphragmatic paralysis (HDP) following ultrasound-guided interscalene block (ISB) versus shoulder pericapsular nerve group (PENG) block in patients undergoing elective shoulder surgery under general anesthesia. The primary objective is to determine whether the shoulder PENG block reduces the incidence of HDP compared with conventional intrafascial ISB. HDP will be assessed using ultrasound measurement of diaphragmatic excursion 30 minutes after block performance

Interventions

  • Interscalene Nerve Block (Other)
    Procedure: Ultrasound-guided conventional intrafascial interscalene block at C5-C6 level Drug: 15 mL of 0.25% bupivacaine (37.5 mg)
  • shoulder pericapsular nerve group block (Other)
    Procedure: Ultrasound-guided shoulder pericapsular nerve group block Drug: 15 mL of 0.25% bupivacaine (37.5 mg)

Eligibility criteria

Inclusion Criteria: * ASA physical status I-III * Scheduled for elective shoulder surgery under general anesthesia * Able to provide informed consent Exclusion Criteria: * Pre-existing diaphragmatic dysfunction * Severe COPD or restrictive pulmonary disease * Neuromuscular disorders * BMI \> 40 kg/m² * Coagulopathy * Infection at injection site * Allergy to local anesthetics * Inability to undergo diaphragmatic ultrasound assessment

Conditions

Hemidiaphragmatic Paralysis

Locations

  • Marmara University — Istanbul, Turkey (Türkiye)
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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

View Official Record