Clinical Trials Logo

Clinical Trial Summary

This study evaluates the diagnostic efficiency of an automated method of noninvasive assessment of the fractional reserve of coronary blood flow.

Fractional flow reserve is estimated with a one-dimensional mathematical model constructed by means of an automated algorithm. Noninvasive method values are thereafter compared with invasive method values.

Clinical Trial Description

Noninvasive assessment of Fractional Flow Reserve is almost never applied in the Russian Federation due to the relative novelty and study insufficiency, lack of the appropriate resource base, specific necessary software and trained qualified personnel.

In 2015, scientists from the Institute of Numerical Mathematics RAS in collaboration with specialists of the I.M. Sechenov First Moscow State Medical University developed a noninvasive method of fractional flow reserve assessment based on a one-dimensional mathematical model. A model is constructed based on images derived from the coronary computed tomography angiography performed by standard protocol; the method is fully automated.

The aim of our study is to evaluate the diagnostic efficiency of this technique in clinical practice.

This is a pilot study; we are planning to enroll 30 patients: 13 of them underwent 64-slice computed tomography and are included retrospectively; 17 will be included prospectively, with a 640-slice CT scan. Specialists from the Laboratory of Mathematical Modeling will process CT images and evaluate noninvasive FFR. Ischemia is confirmed if FFR < 0.80 and disproved if FFR ≥ 0.80. After that, the prospective group of patients will be hospitalized for invasive FFR assessment as a reference standard; if ischemia is proved, patients will undergo stent implantation. In the retrospective group, patients already have invasive FFR values estimated.

Statistical analysis will be performed using R programming language packages ( Continuous variables will be presented as mean values ± standard deviations, order variables will be presented as medians with interquartile ranges in parentheses. We are going to use the D'Agostino-Pearson omnibus test for the assessment of normality of distribution and construct a Q-Q Plot. We will compare these two methods with the Bland-Altman analysis and ROC-analysis and will assess the degree of correlation with the Pearson's chi-squared.

The study should result in determining the sensitivity, specificity, positive and negative predictive values of the method.

After the active phase of the research is done, we are planning to proceed observation on the prospective group of patients to verify the endpoints. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT03797118
Study type Interventional
Source I.M. Sechenov First Moscow State Medical University
Contact Daria Gognieva, Graduate
Phone +7 (969) 0214847
Status Recruiting
Phase N/A
Start date April 5, 2017
Completion date July 5, 2019

See also
  Status Clinical Trial Phase
Recruiting NCT03810599 - Patient-reported Outcomes in the Bergen Early Cardiac Rehabilitation Study N/A
Completed NCT02528474 - Comparison of Optical Coherence Tomographic Findings After Balloon Angioplasty With Two Different Paclitaxel-Coated Balloons for the Treatment of In-Stent Restenosis in Drug-Eluting Stents N/A
Recruiting NCT03471234 - Latin America Real World Study With Inspiron Drug Eluting Stent - INSPIRON LATITUDE
Completed NCT02115308 - Characterization of Changes in Ventricular Mechanics in Response to Lexiscan Stress Using Tagged Cine Cardiac Magnetic Resonance Imaging Phase 4
Terminated NCT01374555 - Evaluation of the CardioSond Electronic Stethoscope in the Detection of Coronary Artery Disease
Active, not recruiting NCT03216720 - Miniaturized Extracorporeal Circulation Study N/A
Completed NCT03226262 - FFRangio Accuracy vs. Standard FFR
Recruiting NCT03622671 - Fibrin Clot Properties and Blood Loss Following Coronary Artery By-pass Grafting N/A
Recruiting NCT03707626 - Collateral Circulation to LAD and Wellens Sign
Recruiting NCT03378934 - Anti-platelet Effect of Berberine in Patients After Elective Percutaneous Coronary Intervention Phase 4
Completed NCT01930214 - Multi-center Prospective Study to Evaluate Outcomes of the Moderate to Severely Calcified Coronary Lesions (MACE) N/A
Recruiting NCT03709836 - Computed Tomography Angiography Prediction Score for Side Branch Occlusion
Completed NCT02272582 - A Study to Evaluate the Use of SOMVC001 (GALA) Vascular Conduit Preservation Solution in Patients Undergoing CABG (STEPS) N/A
Recruiting NCT03265535 - Validation of a Single Rest-Stress Imaging Protocol for Myocardial Perfusion Imaging
Not yet recruiting NCT03265041 - Long Term Predictors of Graft Patency After Coronary Artery Bypass Graft Surgery (Multi-slice CT Coronary Angiography Study Validated by Coronary Angiography)
Not yet recruiting NCT03646019 - Serum Oxidative Status as a Potential Predictor of Coronary Artery Disease.
Recruiting NCT03027856 - The BIFSORB Pilot Study II N/A
Recruiting NCT02922088 - EU Multicenter Registry to Assess Outcomes in CABG Patients: Treatment of Vascular Conduits With DuraGraft [VASC] N/A
Recruiting NCT03518437 - Coronary Atherosclerosis Disease Early Identification and Risk Stratification by Noninvasive Imaging
Recruiting NCT02832115 - Topical Nitroglycerine Treatment for Radial Artery Spasm Prevention Phase 4