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

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT02266732

Enrollment

Registered

2014-10-17

Start date

2011-05-31

Completion date

2011-06-30

Last updated

2015-02-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Musculoskeletal Pain

Brief summary

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.

Interventions

DEVICEStimuplex HNS 12

Study design

Allocation

NON_RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

18 Years to 70 Years

Healthy volunteers

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

Design outcomes

Primary

Measure	Time frame	Description
Nerve stimulation resulting in muscle contraction or not	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.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026