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Interscalene Block Versus Combined Supraprascapular: Axillary Nerve Blocks

NCT02916342 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2019-11-04

No results posted yet for this study

Summary

The interscalene block provides effective analgesia after shoulder surgery. It consists of injecting local anaesthetic within the brachial plexus, in the interscalene groove, between the anterior and middle scalene muscles. Unfortunately, this technique is associated with respiratory complications such as hemidiaphragmatic paresis due to the spread of the local anaesthetic towards the phrenic nerve that lies close to the brachial plexus, with an incidence up to 100%. The diaphragmatic paresis may be a serious side-effect, especially in patients suffering from a reduced respiratory function such as chronic obstructive pulmonary disease; this entity may even represent a contraindication to the performance of the block.

The shoulder is mainly innervated by the suprascapular and axillary nerves, both of them coming from C5 and C6 branches of the brachial plexus block. Recently, several authors have successfully identified and block these two nerves under ultrasound guidance. Only one randomised controlled trial compared interscalene block with a combination of suprascapular and axillary nerve blocks, and showed inconclusive results probably due to the absence of ultrasound guidance; indeed, analgesia was equivalent at the sixth postoperative hour, while patients with an interscalene block had reduced pain scores in the recovery room. Besides, the authors did not investigate the impact on the respiratory function.

In that randomised controlled trial, the investigators would like to compare the analgesic efficacy and the respiratory outcomes between the interscalene block and the combined suprascapular-axillary nerve blocks.

Conditions

  • Analgesia
  • Diaphragm

Interventions

PROCEDURE

Interscalene brachial plexus block

Patients will receive an ultrasound-guided interscalene brachial plexus block before general anaesthesia.

PROCEDURE

Supraclavicular-axillary nerve blocks

Patients will receive ultrasound-guided supraclavicular and axillary nerve blocks before general anaesthesia.

Sponsors & Collaborators

  • Centre Hospitalier Universitaire Vaudois

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2016-09-30
Primary Completion
2019-04-30
Completion
2019-04-30

Countries

  • Switzerland

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02916342 on ClinicalTrials.gov