A Comparison of Ultrasound and Nerve Stimulator Techniques for Nerve Localization in Regional Anesthesia

Ochsner Health System

Status: Withdrawn

Conditions: Orthopedic

Study type: Observational

Funder types: Other

Identifiers

NCT01221415

2007.127.A (Other Identifier)

Details and patient eligibility

About

The primary objective of this study is to compare ultrasound versus nerve stimulator techniques for nerve localization when performing peripheral nerve blocks. Specifically the investigators will be performing Popliteal, Femoral, and Interscalene nerve blocks. The investigators will be looking for differences in 1) time taken to locate the target nerve and inject local anesthetic 2) time from injection of local anesthetic to adequate surgical anesthesia 3) effectiveness of block 4) incidence of vascular puncture 5) incidence of adverse events 6) patient satisfaction.

Full description

After obtaining informed consent, subjects will be randomized to either the ultrasound or nerve stimulator groups as the method for nerve localization prior to peripheral block placement.

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• American Society of Anesthesiologists (ASA) Physical status I-III
• Arthroscopic knee surgery or Lower leg/foot surgery as well as shoulder arthroscopy
• Outpatient status
• Patient preference for a regional anesthetic
• Subjects should be capable of giving informed consent

Exclusion criteria

• Allergy to:

  • Local anesthetics
  • Hydromorphone
  • Propofol
  • Midazolam

• Patient refusal

• Infection at the injection site

• Peripheral Neuropathy

Trial design

0 participants in 6 patient groups

Interscalene Ultrasound

Description:

Subjects having orthopedic surgery requiring an interscalene peripheral nerve block and randomized to have the ultrasound used to locate the nerve.

Interscalene Nerve Stimulator

Description:

Subjects having orthopedic surgery requiring an interscalene peripheral nerve block and randomized to have the nerve stimulator used to locate the nerve.

Popliteal Ultrasound

Description:

Subjects having orthopedic surgery requiring an popliteal peripheral nerve block and randomized to have the ultrasound used to locate the nerve.

Popliteal Nerve Stimulator

Description:

Subjects having orthopedic surgery requiring an popliteal peripheral nerve block and randomized to have the nerve stimulator used to locate the nerve.

Femoral Ultrasound

Description:

Subjects having orthopedic surgery requiring an femoral peripheral nerve block and randomized to have the ultrasound used to locate the nerve.

Femoral Nerve Stimulator

Description:

Subjects having orthopedic surgery requiring an femoral peripheral nerve block and randomized to have the nerve stimulator used to locate the nerve.