- by Dr SUNIL DWIVEDI
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- Aug 31 2017
Coronary Angiography-All you need to know about the Test
Coronary angiography is a process that employs a particular dye (contrast material) and x-rays to observe how blood passes through the arteries in your heart.
How the test is performed
Coronary angiography is frequently done along with cardiac catheterization. This is a process which calculates pressures in the heart chambers.
You will be given a moderate sedative to help you relax, before the test begins.
A part of your body (the groin or arm) is cleansed and anaesthetize with a local anaesthetizing medicine (anesthetic). The cardiologist passes a thin empty tube, called a catheter, through an artery and thoroughly moves it up into the heart. X-ray images help the doctor place the catheter.
Once the catheter is placed, dye (contrast material) is passed into the catheter. X-ray images are taken to locate how the dye passes through the artery. The dye helps spot any obstruction in blood flow.
The procedure usually lasts thirty to sixty minutes.
How to prepare for the test
You should not eat or drink anything for eight hours before the test begins. You may need to rest in the hospital the night before the test. Or else, you will check in to the hospital the same morning of the test.
You will garb a hospital gown. You must sign an agreement form before the test. Your doctor will explain the process and its risks.
Tell your doctor if you:
You have had an adverse reaction to contrast material in the past or if you are allergic to any medication
If you are taking Viagra
If you are pregnant
How the test will feel
In most cases, you will be conscious during the test. You may feel some pressure at the area where the catheter is positioned.
You may feel a flushing or warm feeling after the dye is administered.
After the test, the catheter is removed. You might feel a strong pressure being applied at the placing area to prevent bleeding. If the catheter is positioned in your groin, you will be asked to lie uniform on your back for a few hours to many hours after the test to circumvent bleeding. This may cause some moderate back uneasiness.
Why the test is performed?
Coronary angiography may be performed if:
You encounter angina for the first time.
Your angina that is becoming adverse, not going away, occurring more frequently, or happening at rest which is called unstable angina.
You have aortic stenosis.
You have unusual chest pain, when other tests are habitual.
You had an atypical heart stress test.
You are at high risk for coronary artery disease and going to have surgery on your heart.
You have heart failure.
You have been identified as having a heart attack.
There is a normal supply of blood to the heart and no obstructions.
What abnormal results mean?
An abnormal outcome may mean you have a blocked artery. The test can display how many coronary arteries are obstructed, where they are obstructed, and the seriousness of the blockages.
What are the possible risks?
Cardiac catheterization bears a moderately increased risk when compared with other heart tests. However, the test is very safe when conducted by a skillful team.
Usually the risk of significant complications ranges from one in thousand to one in five hundred. Risks of the process involve the following:
Laceration to a heart artery
Low blood pressure
Allergic response to contrast dye or a medicine injected during the exam
Considerations related with any kind of catheterization involve the following:
In general, there is a risk of infection, bleeding and pain at the IV or catheter spot.
There is invariably a very small risk that the soft plastic catheters could injure the blood vessels or nearby structures.
Blood clots could build on the catheters and later obstruct blood vessels in a different place in the body.
The contrast dye could harm the kidneys (especially in individuals with diabetes or prior kidney disorders).
If a blockage is found, your doctor may execute a transcutaneous coronary intervention (PCI) to open the blockage. This can be done during the same process, but may be delayed for several reasons.
Cardiac Angiography; Angiography - Heart; Angiogram - Coronary; Coronary Artery Disease - Angiography; CAD - Angiography; Angina - Angiography; Heart Disease - angiography
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