Left Heart Catheterization
Medically reviewed by Drugs.com. Last updated on Aug 31, 2022.
What do I need to know about left heart catheterization?
Left heart catheterization is a procedure to look at your heart and its arteries. You may need this procedure if you have chest pain, heart disease, or your heart is not working as it should.
How do I prepare for the procedure?
- Your healthcare provider will tell you how to prepare. He or she may tell you not to eat or drink anything after midnight on the day of the procedure. Arrange to have someone drive you home when you are discharged.
- Tell your provider about all medicines you currently take. He or she will tell you if you need to stop any medicine for the procedure, and when to stop. He or she will tell you which medicines to take or not take on the day of the procedure.
- Contrast liquid will be used to show the parts of your heart more clearly in pictures. Tell your provider if you have had an allergic reaction to contrast liquid.
- You may need blood or urine tests before your procedure. Talk to your healthcare provider about these or other tests you may need.
What will happen during the procedure?
- You will be given medicine to help you relax. You will receive local anesthesia that will numb the area where the catheter will be placed. You will be awake during the procedure so that your healthcare providers can give you instructions. You will need to let them know if you have any discomfort.
- Your healthcare provider will insert a catheter into an artery in your arm, wrist, or leg. He or she will use an x-ray to guide the catheter to your heart. Contrast liquid will be used to help heart blood vessels, muscle, or valves show up more clearly in the pictures. You may get a warm feeling or slight nausea right after the liquid is injected. This is normal, and will pass quickly. Your provider may remove a small sample of heart tissue and send it to a lab to be tested. He or she may also open a narrow or blocked heart valve or artery. A stent (small tube) may be left inside your artery to hold it open.
- The catheter may be left in place to monitor pressure in your heart. When the catheter is removed, pressure will be applied to the site for at least 30 minutes to help decrease the risk of bleeding. A collagen plug or other closure device may be used to close the site. If the site is in your wrist, your healthcare provider will place a compression device around your wrist. Healthcare providers will cover the site with a pressure bandage to decrease bleeding.
What should I expect after the procedure?
You will be taken to a room to rest until you are fully awake. Healthcare providers will monitor you closely for any problems. Do not get out of bed until your healthcare provider says it is okay. When your healthcare provider sees that you are okay, you will be taken to your hospital room.
- You may need to lie flat and keep your arm or leg straight for several hours. Arm or leg movement too soon can cause serious bleeding.
- Extra liquids will help flush the contrast liquid out.
- If the catheter was in your groin and you need to cough, support the catheter site with your hand.
What are the risks of left heart catheterization?
During the procedure, the catheter may tear an artery and cause bleeding. An air bubble may enter your lung, or your lung may collapse. You may have a heart attack. After the procedure, you may have bleeding or an infection. You may have damage to a heart valve. A fistula (abnormal opening) may form between an artery and vein. You may have irregular heartbeats that cause dizziness or fainting. You may get a blood clot in your leg or arm. These problems may become life-threatening.
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