MEV to Block the Posterior and Lateral Cords of the Infraclavicular Brachial Plexus

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

PHASE4

Total Enrollment

23 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-10-30

Study Completion Date

2018-04-01

Brief Summary

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The investigators have recently shown that LSIB in combination with a suprascapular and a cervical plexus block is a very good alternative for arthroscopic shoulder surgery. However, the investigators believe the total volume of local anesthetic for LSIB may be reduced. For shoulder surgery there is no need to block the medial cord and the investigators therefore hypothesize a significantly lower MEV95% by applying a selective lateral and posterior cord block

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Detailed Description

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The MEV for a successful block in 50% of the participants will be determined by using the staircase up-and-down method introduced by Dixon and Massey. Logistic regression and probit transformation will be applied to estimate the MEV for a successful block in 95% of the participants.

Conditions

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Shoulder Disease Anesthesia

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Ropivacaine

Single arm intervention

Group Type OTHER

Ropivacaine

Intervention Type DRUG

Minimum effective volume

Interventions

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Ropivacaine

Minimum effective volume

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

Inclusion Criteria:

* . Inclusion criteria are American Society of Anesthesiologists (ASA) physical status I-III, age between 18 and 70 years and body mass index (BMI) between 20 and 35 kg/m2.

Exclusion Criteria:

* Exclusion criteria are pregnancy, patients with contraindications to regional anesthesia, allergy to LAs, patients taking opioids regularly due to chronic pain, use of anticoagulation drugs other than acetylsalicylic acid or dipyridamole, atrioventricular block, diabetes.

Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No