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

The Leeds Teaching Hospitals NHS Trust

Status: Completed

Conditions: Musculoskeletal Pain

Treatments: Device: Stimuplex HNS 12

Study type: Interventional

Funder types: Other

Identifiers

NCT02266732

AN11/9771

11/YH/0206 (Other Identifier)

Details and patient eligibility

About

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.

Enrollment: 20 patients

Sex: All

Ages: 18 to 70 years old

Volunteers: No 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

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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20 participants in 2 patient groups

Interscalene block

Other group

Treatment:

Device: Stimuplex HNS 12

Femoral block

Other group

Treatment:

Device: Stimuplex HNS 12