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

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.

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Key information

Conditions

Musculoskeletal Pain Muscular Diseases Musculoskeletal Diseases Neurologic Manifestations Pain Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

18 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: No

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

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

Treatment and study plan

Stimuplex HNS 12

Device

Other names: Peripheral nerve stimulator for nerve location

Primary outcomes

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.

Sponsors and collaborators

Lead sponsor

The Leeds Teaching Hospitals NHS Trust

Other

Registry information

Important dates

Study start: 2011
Primary completion: 2011
Study completion: 2011
First posted: Oct 17, 2014
Registry last updated: Feb 23, 2015

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.

Published trials that share one or more normalized conditions with this study.

Completed