Dynamic SAX vs Conventional LAX in Radial Artery Cannulation.

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

146 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-01-30

Study Completion Date

2018-06-04

Brief Summary

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When performing vascular cannulation such as radial artery cannulation, ultrasonography (US) helps proper positioning of the tip of needle in the vascular lumen, which facilitating cannulation of the catheter and successful pressure monitoring. Conventionally, short-axis out-of-plane (SAX) and long-axis in-plane (LAX) views are commonly used method to image the target vessel during cannulation under US guidance. Dynamic needle tip positioning (DNTP) method is newly introduced by one group of investigators who conducted a related study using vascular phantom model.

In DNTP, SAX is used, and additionally, when the needle tip is imaged in the screen as an echogenic point, the practitioner (a) proximally moves the US probe a bit, and then (b) the needle is advanced until the needle tip reappears in the screen. In this manner, the practitioner repeats (a) and (b) until the needle is inserted 1 cm into the lumen of vessel, and then the catheter is inserted to finish the procedure.

DNTP has not been compared to conventional imaging methods. The aim of this trial is to see the effect of DNTP on success rate of the radial artery cannulation at the first attempt, compared to the conventional LAX.

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Detailed Description

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Conditions

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Cardiac Surgical Procedures Catheterization Ultrasonography

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

OTHER

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Dynamic needle tip positioning

In DNTP, SAX is used, and additionally, when the needle tip is imaged in the screen as an hyper-echoic point, the practitioner (a) moves the US probe proximally a bit, and (b) the needle is advanced until the needle tip reappears in the screen. In this manner, the practitioner repeats (a) and (b) until the needle is inserted 1 cm into the lumen of vessel, and then the catheter is inserted to finish the procedure.

Group Type ACTIVE_COMPARATOR

Dynamic needle tip positioning under ultrasound-guidance

Intervention Type PROCEDURE

The tip of needle is positioned under ultrasound-guidance using dynamic short-axis view.

Conventional long-axis

Group Type ACTIVE_COMPARATOR

Conventional long-axis view

Intervention Type PROCEDURE

The tip of needle is positioned under ultrasound-guidance using conventional long-axis in-plane view.

Interventions

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Dynamic needle tip positioning under ultrasound-guidance

The tip of needle is positioned under ultrasound-guidance using dynamic short-axis view.

Intervention Type PROCEDURE

Conventional long-axis view

The tip of needle is positioned under ultrasound-guidance using conventional long-axis in-plane view.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Elective cardiovascular surgery where RA catheterization is newly required.

Exclusion Criteria

* skin infection or trauma
* Bilateral arteriovenous fistula for dialysis
* Severe peripheral vascular disease
* Severe arteriosclerosis or arterial atheroma
* Raynaud disease
* Shock
* Patients on ECMO or IABP support
* Morbid obesity
* Profound coagulopathy
* Negative results of modified Allen's test

Minimum Eligible Age

19 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No