Optimal Location of Local Anesthetic Injection for Ultrasound Guided Interscalene Block

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

208 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-01-31

Study Completion Date

2016-04-30

Brief Summary

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This is a prospective randomized clinical trial to determine where is the optimal location for local anesthetic injection for ultrasound guided interscalene nerve blocks. The investigators are investigating if local anesthetic deposited between the nerve roots is more effective than local anesthetic deposited in the interscalene groove.

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Detailed Description

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Conditions

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Shoulder Arthroscopy Ultrasound-guided Interscalene Nerve Block

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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Injection in interscalene groove

Patients undergoing shoulder arthroscopy will have an interscalene nerve block by injection of ropivacaine in the interscalene groove anterior and posterior to the brachial plexus nerves.

Group Type ACTIVE_COMPARATOR

Interscalene block for shoulder arthroscopy

Intervention Type PROCEDURE

Injection between nerve roots

Patients undergoing shoulder arthroscopy will have an interscalene nerve block by injection of ropivacaine in the interscalene groove inbetween the C5 and C6 nerve roots.

Group Type ACTIVE_COMPARATOR

Interscalene block for shoulder arthroscopy

Intervention Type PROCEDURE

Interventions

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Interscalene block for shoulder arthroscopy

Intervention Type PROCEDURE

Eligibility Criteria

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Exclusion Criteria

* chronic pain
* high preoperative opioid requirement
* age \< 18 years old
* non-English speaking
* contraindication to regional anesthesia (allergy to local anesthetics, coagulopathy, severe thrombocytopenia, pre-existing neuropathy in operative limb, infection at puncture site)
* need for postoperative nerve function monitoring
* patient refusal
* dementia
* pulmonary disease or low baseline oxygen saturation

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No