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Clinical Trial Summary

The purpose of this study is to determine the diagnostic performances of iodine contrast medium and resting conditions to predict fractional flow reserve (FFR). Reference FFR will be measured using standard adenosine. We hypothesize that contrast FFR will offer superior diagnostic agreement compared to resting conditions.


Clinical Trial Description

We are conducting a diagnostic accuracy study. The reference standard is adenosine-derived FFR. The diagnostic tests undergoing evaluation are resting conditions and hyperemia induced by intracoronary injection of contrast medium. While all these tests give a continuous result, we will apply binary cutoffs for comparison to FFR≤0.8 as the reference standard. Subjects will be selected prospectively from consecutive patients undergoing FFR assessment for standard clinical indications. The paired comparative design means that each patient will undergo resting (baseline), post-contrast, and adenosine-derived measurements. To enhance test integrity, all pressure recordings will be analyzed in a central physiology core laboratory blinded to clinical data and recruiting site. ;


Study Design

Observational Model: Cohort, Time Perspective: Prospective


Related Conditions & MeSH terms


NCT number NCT02184117
Study type Observational
Source The University of Texas Health Science Center, Houston
Contact
Status Completed
Phase N/A
Start date July 2014
Completion date May 2015

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