Interest of Ultrasound Coupled to a Guidance System (GPS) for Central Venous Catheters (CVC) Insertion. (VVC and GPS)

June 1, 2015 updated by: University Hospital, Grenoble

The GPS system would simplify the technical implementation of central venous catheter under ultrasound guidance. We can assume that the introduction of deep venous pathways (as a reference, the internal jugular) will be faster, and this, whatever the level of expertise. By checking this hypothesis, this technique could be applied to much less frequent situations establishment of difficult central venous catheters (hemodynamic status precarious, hypovolemia, or cardiac arrest).

The main objective of this study is to evaluate the time savings provided by the ultrasound assisted GPS guidance for installing central venous catheters in the internal jugular. Central venous catheters are inserted in the operating room under conditions scheduled in advance that is to say outside emergency. The installation time for the central venous catheter is compared with that obtained by using the ultrasound machine without the GPS guide ("conventional" technique).

Study Overview

Detailed Description

The techniques of reference for the central venous access (internal jugular, subclavian or femoral) are based on anatomical landmarks and the low probability of anatomical variations. With these techniques, the central venous puncture, with Seldinger method, is associated to complications both in adults and in children (pneumothorax, hemothorax, infection, thrombosis, arterial puncture, inappropriate location). The frequency of these adverse events is highly variable and ranges between 1 and 20% of central venous catheters in place. Ultrasound, visualizing anatomical structures before (echo tracking) or during (ultrasound guidance) the puncture, improves about 80% the success of the first puncture, and decreases by 50% the complications. The ultrasound guidance is better than echo tracking to reduce the time of implementation of the central venous catheter. However, this technique requires more practice. On the other hand, visualization of the needle path is not always easy especially for the subclavian access, because it requires a puncture in the ultrasound plane.

GPS system (Guidance Positioning System) is an original system of guidance. This is a simple navigation system for projecting the theoretical position of the puncture needle in the ultrasound plane. The guidance system consists of a receiver and two motion sensors. The receiver is connected to the system. A motion sensor is incorporated into the end of the needle. Another motion sensor is located within the ultrasound probe. The relative positions and the axes of the needle and the ultrasound probe are transmitted with coordinates in three dimensions.

The puncture can be carried out of the plane (ultrasound probe perpendicular to the axis puncture) and the direct visualization of the needle is not necessary. Before the puncture, the end of the needle is placed on the skin. The direction and the axis of the needle relative to the skin are adjusted, before the puncture, depending on the position of the target to be achieved, displayed by a mark on the screen. Throughout the puncture, a projected image of the needle is displayed on the screen.

Study Type

Interventional

Enrollment (Actual)

100

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Grenoble, France, 38043
        • CHU de Grenoble

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Adults 2 sexes
  • Age> 18years
  • Indication for placing a central venous catheter in internal jugular
  • Scheduled installation

Exclusion Criteria:

  • Persons referred to in Articles L. 1121-5 to L. 1121-8 Code of Public Health,
  • Lack of coverage by social security
  • Refusal of patient consent
  • Contraindication for placement of a central venous catheter in internal jugular
  • Emergency
  • Pregnancy
  • Doppler data from the supra-aortic trunks if it exists (eg bilateral carotid stenosis)
  • Pacemaker, defibrillator

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Use of ultrasound with active GPS
CVC insertion with ultrasound with active GPS function and appropriate needles
Active Comparator: Use of ultrasound with inactive GPS
CVC insertion with ultrasound with inactive GPS function and conventional needles

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Time required for CVC insertion
Time Frame: at the end of the insertion of the guide wire, an average of one and a half minutes after the beginning of the procedure
at the end of the insertion of the guide wire, an average of one and a half minutes after the beginning of the procedure

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Total number of puncture
Time Frame: at the end of the insertion of the guide wire, an average of one and a half minutes after the beginning of the procedure
at the end of the insertion of the guide wire, an average of one and a half minutes after the beginning of the procedure
Complication rate in the superior vena cava territory
Time Frame: At 24 hours
Complication rate secondary to cannulation in the territory superior vena cava: arterial puncture, subcutaneous hematoma, pneumothorax, difficulty progression of the guide, aberrant pathway, transfixion of the vein
At 24 hours
Insertion failure rate
Time Frame: at the end of the insertion of the guide wire, an average of one and a half minutes after the beginning of the procedure
Failure is defined as the necessity to change anatomical site despite the visualization of the vein or stop using the GPS function
at the end of the insertion of the guide wire, an average of one and a half minutes after the beginning of the procedure

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Pierre ALBALADEJO, MD, University Hospital, Grenoble

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

October 1, 2013

Primary Completion (Actual)

September 1, 2014

Study Completion (Actual)

September 1, 2014

Study Registration Dates

First Submitted

August 27, 2014

First Submitted That Met QC Criteria

September 1, 2014

First Posted (Estimate)

September 4, 2014

Study Record Updates

Last Update Posted (Estimate)

June 2, 2015

Last Update Submitted That Met QC Criteria

June 1, 2015

Last Verified

June 1, 2015

More Information

Terms related to this study

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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