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The V-Tachogram:Decreasing Ventricular Arrythmias When Injecting Contrast in the Left Ventricle

NCT ID: NCT00288756

Last Updated: 2006-09-13

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

UNKNOWN

Total Enrollment

156 participants

Study Classification

OBSERVATIONAL

Study Start Date

2006-07-31

Study Completion Date

2006-08-31

Brief Summary

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The purpose of this study is to determine if increasing the linear rise rate of injection of x-ray contrast in the heart during left ventriculograms(part of a cardiac Catheterization procedure) will decrease the incidence of arrythmias and improve image quality?

Detailed Description

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The LV angiogram is performed frequently as part of the cardiac catheterization procedure. It is done by injecting a bolus of x-ray contrast into the ventricle through a pigtail catheter over a short period of time and observing the heart as it is pumped out. This provides information on regional wall motion abnormalities, ejection fraction, and mitral regurgitation. A common occurrence when performing a LV angio is frequent PVC's or V-tach during the injection, it has been suggested that ectopic's occurs about 54% of the time and that interpretability was limited 30% of the time(3) This is rarely serious and subsides at the end of the injection but the irregularity of the contractions does affect the diagnostic quality of the exam.

In an attempt to decrease the incidence of ventricular ectopic's during the LV angiogram Contrast injections with a greater linear rise increasing the injection duration to at least ½ the flow rate, greater than previous settings should decrease the tension and the contrast jets coming out of the catheter, decreasing the fling of the catheter at the initiation of the injection. Whether this affects the quality of the angiogram with a pig tail vs. a straight catheter will also need to be considered?

Conditions

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Ventricular Arrythmias

Keywords

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arrythmias

Study Design

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Observational Model Type

DEFINED_POPULATION

Study Time Perspective

OTHER

Interventions

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lv injection of contrast

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Only ventriculograms that the operator deems necessary for the booked procedure will be considered. Only operators agreeing to the for mentioned settings will participate in the study. Patients will be randomized consecutively and should conclude in 3 to 4 weeks.

Exclusion Criteria

* Patients with aortic valve disease, a-fib, and frequent benign ectopic beats and patients unable to follow instructions to stop breathing will be excluded.
Minimum Eligible Age

0 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Trillium Health Centre

OTHER

Sponsor Role lead

Principal Investigators

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Peter Vandermyden, RN

Role: PRINCIPAL_INVESTIGATOR

staff RN Trillium Health Centre

Locations

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Trillium Health Centre

Mississauga, Ontario, Canada

Site Status

Countries

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Canada

Other Identifiers

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01

Identifier Type: -

Identifier Source: org_study_id