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Completed

NCT Number: NCT01033006

Axillary Plexus Block in a High Resolution MRI

Background and aims:

Magnetic resonance imaging (MRI) has proved beneficial for presenting anatomy for regional anaesthesia and to demonstrate spread of local anaesthetic.

A new axillary plexus block with a triple injection (1), combining a short axillary catheter method with a transarterial axillary block, is now being evaluated with a 3 Tesla MRI. In this study, the investigators are investigating MR visualisation of three different block techniques and compare the clinical efficacy of the techniques, with the MR findings.

Patients & Methods:

After obtaining approval of the protocol from the regional ethical committee, 3 x 15 adult patients, scheduled for hand surgery, were included in a randomised, blinded prospective study.

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Key information

Conditions

Nerve Block Magnetic Resonance Imaging

Age range

18 year–75 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

The Intervention Centre, Rikshospitalet, Oslo University Hospital

Oslo, 0027, Norway

About this study

After obtaining approval of the protocol from the regional ethical committee, 3 x 15 adult patients, scheduled for hand surgery, were included in a randomised, blinded prospective study.

In all patients a short axillary plexus catheter is positioned close to the median nerve using nerve stimulator.

Technique 1 = 40 ml in catheter Technique 2 = 30 ml behind and 10 ml in front of the brachial artery (BA) Technique 3 = 20 ml behind, 10ml in front of the BA and 10 ml in catheter

Clinical High Field MRI (3T) scanner has simplified the recognition of brachial plexus nerves in the axilla. After injection of local anaesthetic (LA), the identification of the nerve structures is nevertheless difficult. When all nerves are surrounded of LA in the axilla (MRI), it seems to be associated with a clinical complete brachial plexus block

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • patients scheduled for hand surgery
  • ASA 1 - 2
  • Weight from 50 - 95 kg
  • MR compatible, suitable

Exclusion criteria

  • Neurologic deficit
  • Reaction to LA

Treatment and study plan

Active Comparator: Arm 1: catheter injection

Procedure

Active Comparator: Arm 2: transarterial injection

Procedure

Active Comparator: Arm 3: catheter and transarterial injection

Procedure

Primary outcomes

  1. Clinical efficacy of the blocks used compared with MRI findings

    Time frame: One year

Sponsors and collaborators

Lead sponsor

Diakonhjemmet Hospital

Other

Collaborators

  • Oslo University Hospital

Registry information

Important dates

Study start
2009
Primary completion
2011
Study completion
2012
First posted
Dec 16, 2009
Registry last updated
Feb 13, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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