Ultrasound-guided Versus Direct Palpation Radial Artery Catheter Insertion Among Cardiac Anesthesiologists

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

129 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-08-31

Study Completion Date

2014-05-31

Brief Summary

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When a patient undergoes heart surgery, their Anesthesiologist will insert a tiny plastic tube, called a catheter, in the artery of the patient's wrist. This is called a radial artery catheter. A radial artery catheter allows accurate measurement of the patient's blood pressure during surgery. There are two common techniques for placing the radial artery catheter. The first is a "blind" technique whereby the Anesthesiologist feels for the pulse in the patient's wrist and places the catheter using the location of the pulse as a guide. The second technique, less commonly used, is one whereby the Anesthesiologist uses an ultrasound machine (painless to the patient) to "see" the artery, and thereby uses the ultrasound to guide the catheter placement. Our study will test the hypothesis that ultrasound-guided radial artery catheterization will have faster insertion times, with fewer complications compared with palpation-guided insertion.

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Detailed Description

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Conditions

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Time to Insertion of Radial Artery Cannulation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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direct palpation

Radial artery catheter insertion will be conducted by direct palpation and use of anatomic knowledge by the Anesthesiologist.

Group Type ACTIVE_COMPARATOR

Direct Palpation-guided Radial Artery Catheter insertion

Intervention Type DEVICE

Ultrasound

Radial artery catheter insertion will be conducted by ultrasound guidance. A Sono-site ilook 25 Ultrasound (Sono-site, Inc., Bothell, WA, USA) with a 10-5 MHz linear array ultrasound transducer will be used.

At the discretion on the Anesthesiologist, an out-of-plane (i.e. needle plane at right angles to ultrasound plane) will be used. Colour flow doppler may also be used to identify the artery if necessary.

Group Type ACTIVE_COMPARATOR

Ultrasound-guided Radial Artery Catheter Insertion

Intervention Type DEVICE

Interventions

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Ultrasound-guided Radial Artery Catheter Insertion

Intervention Type DEVICE

Direct Palpation-guided Radial Artery Catheter insertion

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Patients undergoing cardiac surgery
* Age 19 or older
* Provided written informed consent

Exclusion Criteria

* Suspected inability to comply with study procedures, including language difficulties or medical history and/or concomitant disease, as judged by the investigator
* Previous surgery at the site of proposed radial artery catheterization
* Any vascular condition that may preclude eligibility for radial artery line insertion as judged by the investigator
* Patients with ventricular assist devices
* Previous inclusion in this study

Minimum Eligible Age

19 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes