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Optimal Effective Local Anesthetic Volume for Pain Relief Using Brachial Plexus Block

Optimal Effective Local Anesthetic Volume for Pain Relief Using Brachial Plexus Block

Not Recruiting
18 years and older
All
Phase 4
  • Technical (Original)
  • Simplified (AI rewritten)

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Overview

Prospective, patient-blinded study utilizing a novel Continuous Reassessment Method that concomitantly considers both block success and block side effects (lung dysfunction) for brachial plexus nerve blocks.

Description

Success or failure of the brachial plexus block for any given volume will be determined by the verbal analogue pain scale score obtained 60 minutes after surgical end time. Volumes will be determined by continuous reassessment method.

Eligibility

Inclusion Criteria:

  • Surgical candidate for Arthroscopic rotator cuff surgery
  • ASA I-III
  • BMI<40
  • Age >18

Exclusion Criteria:

  • Inability to give informed consent
  • Inability to complete consent process in English
  • allergy to ropivacaine
  • neuropathy
  • contraindications to peripheral nerve block per ASRA guidelines
  • chronic opioid use
  • infection at the injection/catheter site
  • limb restriction due to medical history
  • history of moderate - severe lung disease.

Study details
    Post Operative Pain

NCT05868993

Benaroya Research Institute

30 January 2026

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