Cardiac Catheterization
Cardiologists usually do cardiac catheterization in a hospital. You're awake during the procedure, and it causes little to no pain. Angina itself isn't a disease. Rather, it's a symptom of an underlying heart problem.
- What Is Cardiac Catheterization?
- Who Needs Cardiac Catheterization?
- What To Expect Before Cardiac Catheterization ?
- What To Expect After Cardiac Catheterization?
- Key Points Cardiac catheterization
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What To Expect Before Cardiac Catheterization ?
Before having cardiac catheterization, discuss with your doctor:
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• How to prepare for the procedure
- • Any medicines you're taking, and whether you should stop taking them before the procedure
- • Whether you have diabetes, kidney disease, or other conditions that may require taking extra steps during or after the procedure to avoid complications
It may not be safe to drive after having cardiac catheterization, so you must arrange arrange for a ride home.
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What To Expect During Cardiac Catheterization
Cardiac catheterization is done in a hospital. During the procedure, you'll be kept on your back and awake. This allows you to follow your doctor's instructions during the procedure. You'll be given medicine to help you relax, which may make you sleepy.
Your doctor will numb the area on the arm, groin (upper thigh), or neck where the catheter will enter your blood vessel. A needle is used to make a small hole in the blood vessel. Through this hole your doctor will put a tapered tube called a sheath.
Next, your doctor will put a thin, flexible wire through the sheath and into your blood vessel. This guide wire is then threaded through your blood vessel to your heart. The wire helps your doctor position the catheter correctly. Your doctor then puts a catheter through the sheath and slides it over the guide wire and into the coronary arteries.
Special x-ray movies are taken of the guide wire and the catheter as they're moved into the heart. The movies help your doctor see where to position the tip of the catheter.
When the catheter reaches the right spot, your doctor will use it to do tests or treatments on your heart. For example, your doctor may do angioplasty and stenting.
During the procedure, your doctor may put a special dye in the catheter. This dye will flow through your bloodstream to your heart. Once the dye reaches your heart, it will make the inside of your heart's arteries show up on an x ray called an angiogram. This test is called coronary angiography.
Coronary angiography can show how well blood is being pumped out of the heart's main pumping chambers, which are called ventricles (VEN-trih-kuls). When the catheter is inside your heart, your doctor may use it to take blood samples from different parts of the heart or to do minor heart surgery.
To get a more detailed view of a blocked coronary artery, your doctor may do intracoronary ultrasound. For this test, your doctor will thread a tiny ultrasound device through the catheter and into the artery. This device gives off sound waves that bounce off the artery wall (and its blockage) to make an image of the inside of the artery.
If the angiogram or intracoronary ultrasound shows blockages or other possible problems in the heart's arteries, your doctor may use angioplasty to open the blocked arteries.
After your doctor does all of the needed tests or treatments, he or she will pull back the catheter and take it out along with the sheath. The opening left in the blood vessel will then be closed up and bandaged. A small weight may be put on top of the bandage for a few hours to apply more pressure. This will help prevent major bleeding from the site.