Health
A Look Inside This Common Procedure

What Happens During a Cardiac Catheterization?

Health, Healing, Hope
By:
Dr. Ed Harlamert
Published on:
August 3, 2025

If your doctor has recommended a cardiac catheterization, you might feel anxious. But as someone who has performed thousands, let me walk you through what to expect.

Cardiac catheterization is a diagnostic procedure used to examine how well your heart is functioning. It involves inserting a thin, flexible tube (catheter) into an artery—usually in your wrist or groin—and threading it up to your heart.

Once in place, contrast dye is injected, and X-ray images (angiograms) are taken to show any blockages in your coronary arteries. Sometimes, if a blockage is found, a stent can be placed right then to open the artery.

The whole process usually takes about 30 to 60 minutes. It’s performed while you’re awake but sedated, and most patients go home the same day.

After the procedure, you’ll need to rest and avoid heavy lifting for a few days. Bruising at the insertion site is common, but complications are rare.

This test is incredibly valuable. It helps determine the best treatment—whether medication, a stent, or surgery—and can often prevent a future heart attack.

Knowledge eases fear. Now that you know what’s involved, you can walk into your procedure with confidence.

Dr. Ed Harlamert, MD, Cardiologist
Dr. Harlamert
Cardiologist
Disclaimer: The content provided on this blog is for informational and educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or treatment. Do not disregard professional medical advice or delay seeking it because of something you have read on this site. If you think you may be experiencing a medical emergency, call your doctor or 911 immediately. This blog may discuss general medical topics based on the author’s professional experience, but it does not establish a doctor-patient relationship. Reliance on any information provided on this blog is solely at your own risk. The author and the blog are not liable for any actions taken based on the content of this site. The views expressed here are personal and do not necessarily reflect those of any hospitals, institutions, or organizations with which the author may be affiliated.

FAQs

Here are some common questions about heart health and our blog content.

What is heart health?

Heart health refers to the overall condition of your heart and blood vessels. It encompasses factors like blood pressure, cholesterol levels, and lifestyle choices. Maintaining good heart health is crucial for preventing cardiovascular diseases.

How to improve it?

Improving heart health involves regular exercise, a balanced diet, and avoiding smoking. Incorporating fruits, vegetables, and whole grains can make a significant difference. Additionally, managing stress and getting enough sleep are vital.

What are common symptoms?

Common symptoms of heart issues include chest pain, shortness of breath, and fatigue. You may also experience palpitations or swelling in the legs. If you notice these symptoms, it's important to consult a healthcare professional.

When to see a doctor?

You should see a doctor if you experience persistent chest pain or unusual heart rhythms. Additionally, if you have risk factors like high blood pressure or diabetes, regular check-ups are essential. Early detection can prevent serious complications.

Can lifestyle changes help?

Yes, lifestyle changes can significantly improve heart health. Adopting a healthier diet, increasing physical activity, and managing stress can lead to better outcomes. These changes can also reduce the risk of heart disease.