Trial on the Effects of Ultrasound Probe Position on Ultrasound-guided Nerve Blocks

In-plane Ultrasound-guided Regional Anesthesia Performance Clinical Trial

Official title:

Double Blinded Randomized Control Trial on the Effects of Ultrasound Probe Position on Ultrasound-guided Nerve Blocks

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT01690156
• Other study ID #: Probeposition
• Status: Terminated
• Start date: August 2012
• Est. completion date: February 2013

Study information

• Verified date: January 2024
• Source: University of New Mexico
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Ultrasound has been used to guide a needle to inject local anesthetics around nerves. This is usually done in the same plane as the ultrasound beam in America and is known as an in-plane technique. When done correctly, the entire needle is visualized on the ultrasound screen as it approaches the nerves which are also seen on the same screen the entire time. The ultrasound probe can be held perpendicular or parallel to the shoulders of the person performing the in-plane technique. Our hypothesis is that holding the ultrasound probe perpendicular to the shoulder is superior to holding the probe parallel to the shoulder during an in-plane ultrasound guided regional anesthesia technique.

Description:

Right handed volunteers with no prior exposure to ultrasound techniques are used in this study. They will be randomly assigned to be shown an instructional video on how to perform an in-plane ultrasound guided needling technique on a realistic simulation target. The two videos are identical with the exception of the probe position. A blinded assessor will time the volunteers performance behind a screen and note the duration in which the needle is not visualized in the ultrasound screen.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 62
• Est. completion date: February 2013
• Est. primary completion date: February 2013
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 55 Years

Eligibility

Inclusion Criteria:

• Healthy volunteers

• Right handed

• Aged 18 to 55

Exclusion Criteria:

• Any person who has prior knowledge about ultrasound imaging or regional anesthesia

• Any person who has prior experience with laparoscopy or biopsy

• Any person who has problems with depth of field or simple hand eye co-ordination task

Related Conditions & MeSH terms

• In-plane Ultrasound-guided Regional Anesthesia Performance

Locations

Country	Name	City	State
United States	University of New Mexico	Albuquerque	New Mexico

Sponsors (1)

Lead Sponsor	Collaborator
University of New Mexico

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Time taken to perform a simulated interscalene block	Time taken to perform a simulated interscalene block after watching an instructional video on ultrasound guided regional anesthesia on the simulated targets	1 hour
Secondary	Duration where the entire needle is not visualized when performing the simulated interscalene block	Time taken to perform a simulated interscalene block after watching an instructional video on ultrasound guided regional anesthesia on the simulated targets	1 hour