We updated the design of this site on December 18, 2017. Learn more.
ClinicalTrials.gov
ClinicalTrials.gov Menu

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

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT01690156
Recruitment Status : Unknown
Verified September 2012 by University of New Mexico.
Recruitment status was:  Recruiting
First Posted : September 21, 2012
Last Update Posted : September 21, 2012
Sponsor:
Information provided by (Responsible Party):

Study Description
Brief 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.

Condition or disease
In-plane Ultrasound-guided Regional Anesthesia Performance

Detailed 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.

Study Design

Study Type : Observational
Estimated Enrollment : 62 participants
Observational Model: Case Control
Time Perspective: Prospective
Official Title: Double Blinded Randomized Control Trial on the Effects of Ultrasound Probe Position on Ultrasound-guided Nerve Blocks
Study Start Date : August 2012
Estimated Primary Completion Date : March 2013
Estimated Study Completion Date : April 2013

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Ultrasound
U.S. FDA Resources

Groups and Cohorts

Group/Cohort
Parallel Probe Position
Performing the simulated interscalene block with the ultrasound probe parallel to the shoulders of the person performing the block
Perpendicular Probe Position
Performing the simulated interscalene block with the ultrasound probe perpendicular to the shoulders of the person performing the block


Outcome Measures

Primary Outcome Measures :
  1. Time taken to perform a simulated interscalene block [ Time Frame: 1 hour ]
    Time taken to perform a simulated interscalene block after watching an instructional video on ultrasound guided regional anesthesia on the simulated targets


Secondary Outcome Measures :
  1. Duration where the entire needle is not visualized when performing the simulated interscalene block [ Time Frame: 1 hour ]
    Time taken to perform a simulated interscalene block after watching an instructional video on ultrasound guided regional anesthesia on the simulated targets


Eligibility Criteria

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Healthy volunteers naiive to ultrasound techniques
Criteria

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
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01690156


Contacts
Contact: Nicholas C Lam, MD 5052722610 nlam@salud.unm.edu
Contact: Timothy Petersen, phD 5052722610 tpetersen@salud.unm.edu

Locations
United States, New Mexico
University of New Mexico Recruiting
Albuquerque, New Mexico, United States, 87120
Principal Investigator: Nicholas C Lam, MD         
Sub-Investigator: Elizabeth B Baker, MD         
Sponsors and Collaborators
University of New Mexico
Investigators
Principal Investigator: Nicholas C Lam, MD University of New Mexico
More Information

Responsible Party: University of New Mexico
ClinicalTrials.gov Identifier: NCT01690156     History of Changes
Other Study ID Numbers: Probeposition
First Posted: September 21, 2012    Key Record Dates
Last Update Posted: September 21, 2012
Last Verified: September 2012

Keywords provided by University of New Mexico:
In-plane
Ultrasound-guided regional anesthesia performance
Probe position
Needle visualization