Ultrasound Vs Nerve Stimulation - Why is a PNS so Effective?

February 19, 2015 updated by: The Leeds Teaching Hospitals NHS Trust
The traditional model of localizing a nerve for blockade is using a peripheral nerve stimulator, PNS. Recent advances in UltraSound technology has allowed UltraSound to guide nerve blockade. However despite excellent visualization nerve block success has not significantly improved. I aim to show that this is because the PNS stimulation of a nerve is more than a proximity response as thought but a correct fascial plane response and hence the high success rate of this blind approach.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • ASA 1 to 3 patients for any shoulder surgery or unilateral ACL knee surgery

Exclusion Criteria:

  • Refusal to consent
  • Allergy to Chirocaine local anaesthetic
  • Pace maker in situ
  • Sepsis at site of regional block

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Interscalene block
Device: Stimuplex HNS 12
Other Names:
  • Peripheral nerve stimulator for nerve location
Other: Femoral block
Device: Stimuplex HNS 12
Other Names:
  • Peripheral nerve stimulator for nerve location

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Nerve stimulation resulting in muscle contraction or not
Time Frame: Five minutes
Whether the nerve is successfully stimulated, resulting in muscle contraction, or not when the needle is on the wrong side of the fascial layer.
Five minutes

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

The Leeds Teaching Hospitals NHS Trust

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2011

Primary Completion (Actual)

June 1, 2011

Study Completion (Actual)

June 1, 2011

Study Registration Dates

First Submitted

October 3, 2014

First Submitted That Met QC Criteria

October 16, 2014

First Posted (Estimate)

October 17, 2014

Study Record Updates

Last Update Posted (Estimate)

February 23, 2015

Last Update Submitted That Met QC Criteria

February 19, 2015

Last Verified

February 1, 2015

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • AN11/9771
  • 11/YH/0206 (Other Identifier: Research Ethics Committee)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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