Brief Answer:
My answer would be as follows:

Detailed Answer:
Hello, madame! Thank you for your question and welcome to Health Care Magic. I understand your concern.

Let us go through this together. Nuclear stress test is done to depict areas of the heart muscle which show normality/abnormality during a stressing period of the heart muscle. As this test came back abnormal, your doctor suggested a cardiac CT scan. It is a computed tomography (like the conventional CT scan) with contrast XXXXXXX injected through one of your veins, and aorta is scanned, to evaluate your native coronary arteries and your grafts used for bypassing the diseased arteries, which was carried out last year. Due to the fact that there is a possibility that bypass grafts can be narrowed or blocked, post-coronary artery bypass grafting patients are always controlled by various means to see if there might be a possible narrowing.

The possibility is that, if the angio CT scan on the coronary arteries and grafts reveal any narrowing/blockage, it might be recommended to undergo coronary angiogram again, to quantitatively assess the possible blockages in the grafts. Although it is a possibility, a rare one, that after only one year, a person can undergo re-bypass, the highest probability is that your grafts will be fine or, if one of them has suffered a new blockage, it can be treated with stent implantation. Whichever the case, I am only sharing the possibilities as an aftermath of the cardiac CT scan. Until the test is carried out, we cannot say anything for sure.

I hope my answer is thorough and helpful. Feel free to ask follow-up questions, as I would be happy to help.

My kindest regards,
Dr. Meriton

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