When the doctor told you that you needed to have a test called "Right Heart Catheterization," were you a little nervous? It's normal for anyone to feel a little scared and curious when they say that something like a "catheter" is being inserted into the heart. But don't be afraid. Today, we'll talk about this very simply, in a way that answers all the questions you have in your mind. Then you'll realize that this isn't something to be afraid of after all.
Simply put, what is Right Heart Catheterization?
This is a very special test. Simply put, it measures how well your heart is working, that is, how well it is pumping blood. This test helps to get an accurate idea of the blood pressure and oxygen level, especially in the right side of your heart and in the lungs.
Doctors also call this a "pulmonary artery catheterization." Sometimes you'll also hear it called a "Swan-Ganz catheter." These are all names for the same test.
To do this test, your doctor will use a thin, flexible tube called a catheter . This tube is inserted through a large vein in your neck, groin, or arm and carefully threaded into the right side of your heart. From there, it will be guided into the main artery that carries blood to your lungs, the pulmonary artery . This is how information is measured inside your heart.
Why is it necessary to conduct such a test?
The information obtained from this test is very valuable. It helps doctors accurately diagnose various medical conditions and see how successful they are in treating them.
Imagine, just like a mechanic uses special equipment to check if there is a problem with a car's engine, the doctor uses this catheter to measure the pressure and oxygen levels inside the heart.
The table below shows you the main medical conditions that require this test.
| Condition | A simple explanation |
|---|---|
| Cardiogenic shock | The heart suddenly becomes unable to pump enough blood to the body. |
| Cardiomyopathy | Difficulty pumping blood due to weakening or enlargement of the heart muscle. |
| Congenital heart disease | Various congenital heart defects. |
| Heart failure | The heart is unable to pump blood to meet the body's needs. |
| Heart valve disease | The valves in the heart do not open or close properly. |
| Pulmonary hypertension | Excessive pressure in the blood vessels that carry blood to the lungs. |
Additionally, this test may be necessary before or after some organ transplant surgeries, and before the installation of a special device that helps the heart (`(left ventricular assist device)`).
What is the difference between these two tests performed on the right and left sides of the heart?
Yes, this is an important question. There is a test that is done on the right side of the heart (`Right heart catheterization`) and a test that is done on the left side of the heart (`Left heart catheterization`). There are clear differences between the two.
| Feature | Right Heart Catheterization (right side) | Left Heart Catheterization (left side) |
|---|---|---|
| Catheter insertion tube | Through a vein (in the neck, groin, or arm) | Through an artery (often in the groin or arm) |
| The part of the heart that is being examined | The right atrium, right ventricle, and pulmonary artery of the heart. | The left ventricle of the heart, the aorta, and the coronary arteries that supply blood to the heart. |
| Main objective | Measuring the pressure in the right side of the heart and lungs. | To check for blockages in the coronary arteries. |
| Other names | Pulmonary artery catheterization | Cardiac catheterization, Coronary angiography |
How should you prepare for this test?
Okay, now let's see how you should prepare the day before. Your doctor will give you specific instructions on this, but these are the general things to do.
- Tell your doctor about all the medications you are taking: It is important to tell your doctor about any prescription medications, vitamins, supplements, or over-the-counter medications you are taking. Some medications, especially anticoagulants , may need to be stopped a few days before the test.
- Bring someone home with you: You may not be able to drive yourself after the test, so it is essential to bring someone home with you.
- Remove jewelry and nail polish: Before the test, remove all jewelry such as necklaces, bracelets, and rings. Remove any nail polish, if any.
- Fasting: You will be told not to eat or drink anything for 6 to 12 hours before the test. It is very important to follow this advice exactly.
What happens on the day of the test?
The entire procedure can take several hours, but the time the catheter is in place is usually about an hour.
Before the test...
After you are taken to a special unit of the hospital (a "cath lab"), a nurse will come in and tell you to put on a hospital gown. They will tell you to go to the bathroom and empty your bladder. They will then make you lie down on an examination table and attach small patches to your chest. These are called electrodes . These are used to monitor your heart's activity (like an ECG) throughout the test.
Most of the time, you won't be put to sleep for this test. However, sometimes you may be given a sedative or medicine to help you sleep or relax through a cannula (IV) placed in a vein in your arm.
During the test...
You are awake at this time. The doctor and the team are explaining everything to you.
1. First, the area where the catheter will be inserted (neck, groin, or arm) is cleaned and any hair removed if necessary.
2. Then , a local anesthetic is injected to numb the area. So you won't feel much pain.
3. Now, using a special needle, the blood vessel is entered and the catheter is inserted through it.
4. Then, very slowly and carefully, while looking at a special screen like an x-ray, the catheter is guided into the right side of the heart and into the pulmonary artery.
5. Once the catheter is in the correct position, the pressure at each location is measured and blood samples are taken if necessary.
6. During this time, you may be asked to stay still, breathe or pause, or change your body position.
7. Sometimes, you can also see how your heart rate changes when you exercise (for example, using a pedal machine while lying in bed).
8. Finally, the catheter is carefully removed, and a plaster or bandage is applied to the insertion site.
Does this hurt?
You may feel a little pain when the numbing medicine is injected. You may also feel a slight pressure when the catheter is inserted. Other than that, there is no pain when the catheter goes in. However, you may feel things like:
- A chest pain or a feeling of missing a heartbeat as the catheter hits the walls of the heart.
- Headache, feeling dizzy.
- Feeling nauseous.
- Feeling like coughing.
- A warm feeling when the medicine is given.
If you feel any of these things, tell the doctor or nurse right away. It's very important.
Are there any risks to this test?
Right heart catheterization is generally a very safe procedure . However, like any medical procedure, it can have very small risks. Your doctor will only recommend it if you decide that the benefits of the procedure outweigh the risks.
Some possible risks are:
- Allergic reactions to medications or substances used.
- Irregular heartbeat (Arrhythmia).
- Bleeding or bruising where the catheter is inserted.
- Blood clots.
- Infection.
- Very rarely, damage to the heart or blood vessels, a heart attack or stroke.
Remember that these risks are very rare. The medical team is fully prepared to prevent something like this.
What do you want to do when you get home?
You will be monitored for a few hours after the test and sent home. Be careful of these things after you go home.
- Rest: Rest the rest of the day. Avoid bending, lifting, or pushing for at least 24 hours.
- Avoid driving: If you have been given a light sleep medication, do not drive or operate heavy machinery for 24 hours.
- Drink plenty of water: Drinking plenty of fluids is good for the body.
- Take care of the bandage: Keep the bandage on the catheter insertion site for as long as your doctor tells you (usually a day or two).
- Bathing: Do not bathe for 24-48 hours. Also, do not get in a bathtub until the wound is completely healed. When bathing, do not rub the wound too hard, but keep it moist.
If you have these symptoms, call your doctor immediately!
If you experience any of the symptoms below, call your doctor without delay . Or go to the Emergency Department (ETU) of the nearest hospital.
| Warning Sign | What to pay special attention to |
|---|---|
| Bleeding or swelling at the catheter insertion site | If the bleeding doesn't stop or if a large, painful lump forms there. |
| Signs of an infection | Redness, swelling, warmth, pus, or fever around the wound. |
| Fast or irregular heartbeat | If you feel your chest is pounding or your heartbeat feels strange. |
| A change in an arm or leg | If the arm or leg where the catheter was inserted hurts, turns blue, becomes cold, or tingles. |
| Symptoms of a heart attack | Chest pain or tightness, excessive sweating, difficulty breathing. |
| Loss of consciousness | If you suddenly lose consciousness. |
Take-Home Message
- Right Heart Catheterization is an important and generally safe test that checks the function of the right side of your heart.
- Follow the doctor's instructions (fasting, medication instructions) carefully before this test.
- Don't be afraid to tell the medical team about any discomfort you feel during the test.
- It is very important to rest and take care of the wound after you go home.
- Be aware of the warning signs. If any of these symptoms appear, seek medical advice immediately.
- If you still have questions about this, don't hesitate to discuss them with your doctor.
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