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Catheter-over-needle: Inpatient Study

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified December 2014 by University of Alberta.
Recruitment status was:  Active, not recruiting
ClinicalTrials.gov Identifier:
First Posted: January 31, 2012
Last Update Posted: December 19, 2014
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.
Information provided by (Responsible Party):
University of Alberta
When anesthesiologists perform a regional nerve block, they will often put a catheter - a flexible plastic tube - in the patient to allow for continuous delivery of local anesthetic. This allows the nerve(s) to be 'frozen' so that the patient is more comfortable during and after surgery. The most common method of placing the catheter close to a nerve involves threading the catheter through a needle which has been inserted under the skin. Because the catheter is very thin and flexible, it does not thread well through tissue and will buckle and kink when enough force is applied to it. Another problem is that the puncture hole left by the needle is larger than the diameter of the catheter, meaning that when the needle is withdrawn, the catheter is not secure, which increases the chance that it will dislodge and cause leakage of local anesthetic. One solution to these problems is to use a catheter placement method similar to how intravenous catheters are installed. In this method, the catheter fits around ('over') the needle, which results in more support for the catheter while it is being pushed under the skin. We wish to examine if a catheter-over-needle method would be useful for placing a catheter to deliver local anesthetic during peripheral nerve blockade. We will compare the catheter-over-needle method to the currently used catheter-through-needle method on patients who require continuous anesthetic delivery for their surgery; half the patients will receive anesthetic through one method, and the other half will receive anesthetic through the other method. We believe that using the catheter-over-needle method will result in more secure placement of the catheter and more efficient delivery of local anesthetic.

Condition Intervention
Local Anesthesia Catheterization Procedure: Catheter-over-needle Procedure: Catheter-through-needle

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Supportive Care
Official Title: Comparison of the Catheter-over-needle and Catheter-through-needle Methods for Continuous Delivery of Local Anesthetic During Peripheral Nerve Blockade

Resource links provided by NLM:

Further study details as provided by University of Alberta:

Primary Outcome Measures:
  • Incidence of anesthetic/fluid leakage at catheter insertion site. [ Time Frame: Duration of time that perineural catheter is in the patient ]
    Evidence of leakage of local anesthetic at the catheter insertion site and any catheter dislodgement or premature withdrawal will be recorded.

Secondary Outcome Measures:
  • Confidence in accurate catheter placement. [ Time Frame: Duration of catheter placement in patient. ]
    A subjective assessment of the catheterization and local anesthetic delivery technique will be provided by the anesthesiologist.

  • Time taken to place catheter near target nerve after initial skin puncture. [ Time Frame: From identification of needle insertion site to correct placement of needle in patient; approximately 2 minutes. ]
    The time (in seconds) taken to correctly place the needle/catheter for delivery of local anesthetic will be recorded.

Estimated Enrollment: 100
Study Start Date: January 2012
Estimated Study Completion Date: July 2016
Estimated Primary Completion Date: December 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Catheter-over-needle
Patients will receive a catheter placed by a catheter-over-needle method.
Procedure: Catheter-over-needle
Patients in the experimental group will receive a perineural catheter placed by the catheter-over-needle method.
Active Comparator: Catheter-through-needle
Patients will receive a catheter placed by the traditional catheter-though-needle method.
Procedure: Catheter-through-needle
Patients in the control group will receive a perineural catheter placed by the traditional catheter-though-needle method.

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Adult (>18 yrs)
  • Scheduled for surgery that requires continuous peripheral nerve block

Exclusion Criteria:

  • Failure to provide informed consent
  • Allergy to local anesthetic
  • Neurological pathology and/or deficit in the block region
  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): NCT01522053

Canada, Alberta
University of Alberta Hospital
Edmonton, Alberta, Canada, T6G 2B7
Sponsors and Collaborators
University of Alberta
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: University of Alberta
ClinicalTrials.gov Identifier: NCT01522053     History of Changes
Other Study ID Numbers: Pro000027409
First Submitted: January 26, 2012
First Posted: January 31, 2012
Last Update Posted: December 19, 2014
Last Verified: December 2014