Coronary Computed Tomographic Angiography (coronary CTA)
Coronary artery disease refers to a condition caused by the coronary arteries being blocked or stenosed.
Coronary artery disease is the result of a buildup of plaque around the interior wall of the arteries, causing the lining of the arteries to thicken and become stenosed. When this happens, the heart can’t pump as much oxygenated blood as required. Over time, if a patient develops coronary artery disease, his or her blood vessels will no longer be able to supply sufficient oxygenated blood to the heart muscle, which can lead to sudden and severe chest pains or heart attack.
Patients who should undergo Coronary CTA are:
1. Patients who have the following risk factors of coronary artery disease
People who have a history of coronary artery disease within their family
2. Patients who are suspected of having coronary artery disease
Having chest pain
Electrocardiogram (ECG) or exercise stress test (EST) cannot clearly identify the abnormalities.
This procedure is not suitable for:
Persons during pregnancy or planning for pregnancy.
Renal parenchymal disease with high creatinine level or chronic renal failure with/without hemodialysis.
A history of severe allergy to seafood or contrast medium from x-ray examination
Patients need to make an appointment with a cardiologist to evaluate current symptoms or cardiac risk factors, and to determine the appropriateness and safety of coronary CTA before doing the test.
Preparing to undergo the program
Please do not consume food or drinks except plain water for at least 4 hours prior to beginning the exam.
Please refrain from alcohol drinks and caffeinated drinks such as coffee and tea before testing
Avoid Viagra or other Nitric oxide derivatives 24 hrs before testing.
Avoid heavy exercise 12 hrs before testing.