A Comparison of Ultrasound and Nerve Stimulator Techniques for Nerve Localization in Regional Anesthesia
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Orthopedic
- Sponsor
- Ochsner Health System
- Locations
- 1
- Primary Endpoint
- time from injection of local anesthetic to adequate surgical anesthesia
- Status
- Withdrawn
- Last Updated
- 4 years ago
Overview
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.
Investigators
Leslie Thomas
Anesthesiologist
Ochsner Health System
Eligibility Criteria
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
- •Midazolam
- •Patient refusal
- •Infection at the injection site
- •Peripheral Neuropathy
Outcomes
Primary Outcomes
time from injection of local anesthetic to adequate surgical anesthesia
Time Frame: within the first 45 minutes after injection of local anesthestic
Secondary Outcomes
- time taken to locate the target nerve and inject local anesthetic(within 45 minutes prior to injection)
- effectiveness of block(within 1 hour of 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)