NCT01703130

Determining the Minimal Effective Volume (MEAV95) for Interscalene Brachial Plexus Block for Surgical Anesthesia

• Status: Unknown
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 60 (estimated)
• Sponsor: Sunnybrook Health Sciences Centre · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

Interscalene block (ISB) consistently demonstrates superior pain relief after shoulder surgery. However, patients can experience complications such as blurred vision, hoarseness and shortness of breath with the standard volumes of local anesthetic used in contemporary practice. Patients with respiratory diseases are precluded because of the potential effects on respiration. However, they are then exposed to the risks of general anesthesia and opioid medications which can also have detrimental effects on respiration. Ultrasound guided ISB can reduce the local anesthetic volume required to produce anesthesia for shoulder surgery; this may reduce the complications from ISB to allow patients previously unable to benefit to have this technique, such as patients with obesity and respiratory disease. In order to do so the investigators will use an up-down methodology to find the minimum volume of local anesthetic to provide sufficient anesthesia for shoulder surgery.

Conditions

• Shoulder Pain

Interventions

Type	Name	Description
PROCEDURE	Dose of of ropivacaine 0.75% used in block procedure

Timeline

• Start date: 2012-10-01
• Primary completion: 2014-12-01
• Completion: 2014-12-01
• First posted: 2012-10-10
• Last updated: 2014-06-02

Locations

1 site across 1 country: Canada