This trial is active, not recruiting.

Condition ventricular arrythmias
Treatment lv injection of contrast
Phase phase 1
Sponsor Trillium Health Centre
Start date July 2006
End date August 2006
Trial size 156 participants
Trial identifier NCT00288756, 01


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?

United States No locations recruiting
Other countries No locations recruiting

Study Design

Observational model defined population
Time perspective cross-sectional

Eligibility Criteria

Male or female participants of any age.

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.

Additional Information

Principal investigator Peter Vandermyden, RN
Description 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?
Trial information was received from ClinicalTrials.gov and was last updated in September 2006.
Information provided to ClinicalTrials.gov by Trillium Health Centre.