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

Status

Withdrawn

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01221415

Enrollment

Registered

2010-10-15

Start date

2008-01-31

Completion date

2011-10-31

Last updated

2022-04-27

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

Conditions

Orthopedic

Brief summary

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.

Detailed 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.

Interventions

None listed

Study design

Observational model

OTHER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

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

Design outcomes

Primary

Measure	Time frame
time from injection of local anesthetic to adequate surgical anesthesia	within the first 45 minutes after injection of local anesthestic

Secondary

Measure	Time frame
effectiveness of block	within 1 hour of injection
time taken to locate the target nerve and inject local anesthetic	within 45 minutes prior to injection
incidence of vascular puncture	within 30 minutes of injection
incidence of adverse events	within 2 weeks of the day of surgery
patient satisfaction	within 2 weeks of the date of surgery

Countries

United States

Outcome results