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Clinical Trial Summary

A multicentre, post-marketing, observational trial in 450 patients, whose standard diagnostic workup for chronic coronary syndromes provided for Invasive Coronary Angiography (ICA). Medical records of a potential subject of the trial before their enrolment contain a good quality result of at least 128-slice CCTA performed up to 3 months before the elective ICA. CCTA should find at least one ≥50% stenosis in at least one big coronary artery of ≥ 2 mm diameter. At one hour before ICA in the latest the patient should have a resting Continuous Non-Invasive Blood Pressure (CNBP) taken with a certified device delivered by LifeFlow. The last criterion before including a patient in the final analysis is at least one significant (≥50%) stenosis in one or two coronary arteries of ≥ 2 mm diameter visually confirmed by ICA with a FFR measurement taken in these arteries. The data collection period will cover time from admission for the elective ICA to discharge from the hospital (evaluation of possible adverse events related to invasive procedures). After initial qualification of available data by the attending physician, selected patients will be asked for a consent to participation in the trial no later than upon admission for the elective ICA and before CNBP measurement.


Clinical Trial Description

Stage 1 After a patient declares their consent, a doctor or another member of the study team trained by the sponsor will perform procedures in the following order: - Define the unique patient ID to be recorded in the CRF with the patient's demographic data - Assess the quality of CCTA imaging data (DICOM) according to guidelines agreed upon with the sponsor and record the number and location of the significant (≥50%) stenosis sites in the CRF based on CCTA - No later than one hour before ICA starts, perform a physical examination consisting in instantaneous peripheral blood pressure (systolic and diastolic) resting measurement performed with a standard sphygmomanometer and Continuous Non-Invasive Blood Pressure measurement (1-3 min). Stage 2 After the procedures mentioned above are performed, the patient will undergo elective ICA with the outcomes, i.e.: - video material showing the location of the wire during the FFR measurement, - digital pressure signals exported from the FFR measuring device used to determine the value of the invasive FFR, - values of FFR measurements obtained during ICA will be entered after being anonymised in a dedicated HEMOFLOW PMS_2020 reference database. Stage 3 Within 48 hours of ICA completion a doctor or another member of the study team trained by the sponsor: - will enter the following data in the Cardiolens FFR-CT Pro system: 1. Patient's data, i.e. patient's ID, gender, height, body mass, exercise tolerability, information on used medications and smoking cigarettes. Optionally, i.e. if upon admission for ICA a blood test was performed as a part of the standard diagnostic workup - haematocrit levels and total protein concentration 2. Files containing CCTA imaging data in the DICOM format. 3. Values of instantaneous peripheral blood pressure (systolic and diastolic) resting measurement performed with a standard sphygmomanometer as well as the digital signal obtained during the CNBP measurement (1-3 min) - Based on the CCTA description or meta data contained in the imaging data the doctor or another member of the study team will record the following information in the CRF: 1. Radiation dose during CCTA 2. Contrast medium dose during CCTA - Will enter the following information in the CRF: 1. Radiation dose during the diagnostic part of ICA 2. Contrast medium dose during the diagnostic part of ICA 3. Number and type of adverse events 4. Duration of the diagnostic workup. Stage 4 Within 7 days of entering all the stage 3 data the investigator (a cardiologist) trained by the sponsor will measure the value of the virtual FFR with the Cardiolens FFR-CT Pro system at locations corresponding to ICA FFR measurements (based on video recording entered in the database during stage 2) Based on results obtained from the Cardiolens FFR-CT Pro system vs reference data an analysis will be performed on meeting the primary and secondary end points of the trial. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04777513
Study type Observational [Patient Registry]
Source Hemolens Diagnostics Sp. z o.o.
Contact
Status Completed
Phase
Start date August 6, 2020
Completion date May 31, 2023

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