This randomized, multi-center, prospective study seeks to compare the conventional invasive Coronary Angiography with the recently described method of performing CT-Coronary Angiography prior to the invasive Coronary Angiography, in post - CABG patients subjected to coronary angiography or percutaneous coronary intervention.
Conventional invasive coronary angiography is currently used to depict coronary arteries, however in recent years, the use of CT-coronary angiography has emerged in the literature for being a non-invasive and well tolerated examination, with imaging findings often equivalent to standard coronary angiography, especially for imaging grafts in patients undergone coronary artery bypass graft surgery (CABG). These patients present with complex anatomy of the coronary arteries making invasive coronary angiography a demanding and time-consuming examination in which the patient is exposed to large doses of radiation and volume of contrast. Multislice computed tomography shows high diagnostic accuracy in the detection of obstruction of the grafts while the advancement of technology continuously improves the diagnostic accuracy of the imaging findings. Of course, axial coronary angiography is more sensitive and specialized in the imaging of grafts, compared to the native coronary arteries of the heart. Therefore, the use of CT-coronary angiography before performing the respective invasive procedure is believed that it may reduce the overall duration of the procedure, the radiation received by the patient and the amount of contrast administered. The aim of the present study is to compare the performance of CT-coronary angiography before invasive coronary angiography compared with the performance of invasive coronary angiography alone. Τhe extent to which the information obtained from CT-coronary angiography contributes to the guidance of invasive coronary angiography that will follow will be studied, regarding the total procedure time, the volume of the contrast administered the radiation to which the patient is exposed and the patient's course over a period of 30 days.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
225
Comparison of performing invasive Coronary Angiography alone with performing CT-Coronary Angiography prior to the invasive Coronary Angiography
Comparison of performing invasive Coronary Angiography alone with performing CT-Coronary Angiography prior to the invasive Coronary Angiography
University Hospital of Patras
Pátrai, Achaia, Greece
Total volume of contrast administered
Time frame: Immediately post-procedurally
Number of catheters used
Time frame: Immediately post-procedurally
Total Fluoroscopy time
Time frame: Immediately post-procedurally
Total Radiation Dose (Effective Dose)
Time frame: Immediately post-procedurally
Total Procedure time (coronary angiography and possible angioplasty)
Time frame: Immediately post-procedurally
Rate of complications related to coronary angiography (aortic dissection, coronary artery dissection, stroke, bleeding, puncture site complication)
Time frame: 1-6 hours
Overall diagnostic accuracy of CTCA for estimation of graft patency will be measured, using sensitivity, specificity, positive predictive value and negative predictive value.
Time frame: Immediately post-procedurally
Rate of patient survival after procedure and occurrence of major adverse cardiovascular events (MACEs). (Death, hospitalization for cardiovascular reason, re-infarction, need for revascularization, stroke)
Time frame: 3-5 days
Patient survival after procedure and occurrence of major adverse cardiovascular events (MACEs). (Death, hospitalization for cardiovascular reason, re-infarction, need for revascularization, stroke).
Time frame: 30 days
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Rate of contrast induced nephropathy defined as increase of serum Cr of 25% or more, or an absolute increase of 0.5 mg/dl or more from baseline value, at 48-72 h following the exposure to contrast medium.
Time frame: 3-5 days
Total volume of contrast agent administered during coronary angiography
Time frame: Immediately post-procedurally
Total Radiation Dose (Effective Dose) during coronary angiography
Time frame: Immediately post-procedurally
Number of catheters used during coronary angiography
Time frame: Immediately post-procedurally