It’s Medical Monday!

Welcome back, everyone! Today, we’ll be talking about one of the most prevalent heart procedures that people get in the hospital: a left heart catheterization. If your doctor suspects a problem with the blood flow to your heart, they may recommend a left heart catheterization (often called a “heart cath”). While the name can sound intimidating, this is a very common procedure that helps doctors diagnose and sometimes treat heart problems.

What is a left heart catheterization?

A left heart catheterization (LHC) is a procedure that allows doctors to directly look at the arteries, known as the coronary arteries, that supply blood to your heart.

During the procedure, a thin, flexible tube called a catheter is inserted into an artery in the arm or the groin and guided up to the heart. A special dye that is visible on X-ray is then injected while X-ray images of the heart are continuously taken. Since the doctors can see the dye flowing through the coronary arteries in real-time, this procedure lets doctors see if there are any blockages or narrow areas in the arteries that might be affecting blood flow.

Doctors use a long catheter to directly inject dye that can be seen on X-ray into the arteries of the heart. Source: https://my.clevelandclinic.org/health/diagnostics/16832-cardiac-catheterization

Why would someone need an LHC?

Doctors often recommend a left heart catheterization if there are signs of coronary artery disease, which occurs when plaques build up in the heart’s arteries. Common reasons a patient might need a left heart cath are: 

• Chest pain or pressure (angina)

• Abnormal results on a stress test

• Shortness of breath with activity

• Evaluation after a heart attack

• Checking the coronary arteries before certain heart surgeries

  
  

Because the test gives a direct look at the arteries, it’s considered the gold standard method to diagnose coronary blockages.

Can it treat problems too?

A heart cath is not just diagnostic. It can also treat some types of blockages if they are found during the procedure. If a significant narrowing is found, doctors may perform a coronary angioplasty, where a tiny balloon is inflated to open the artery. Often, a small metal mesh tube called a stent is placed to keep the artery open and improve blood flow. This is referred to as percutaneous coronary intervention or PCI, for short. In other cases, the results of the catheterization help doctors decide whether medications, stents, or bypass surgery would be the best treatment.

What happens during the procedure?

Left heart catheterization is usually done in a specialized hospital room called a catheterization “cath” lab. Most patients are awake but receive medications to help them relax. The procedure typically takes about 30 minutes to an hour, though it can take longer if treatment is performed at the same time. Afterward, patients are monitored for a few hours while the access site heals.

Left heart catheterization is considered a very safe and routine procedure, performed millions of times each year. Serious complications are uncommon, though, like any medical procedure, small risks such as bleeding, bruising, or reactions to the dye can occur. Your doctors carefully monitor you before, during, and after the procedure to minimize these risks.

Bottom line

Left heart catheterization is one of the most important tools doctors have for diagnosing and treating heart disease involving the blood vessels of the heart. While the idea of a procedure involving the heart can be stressful, this test often provides the clear answers needed to guide the best treatment and protect your long-term heart health.

That’s all for this post, folks. Thank you so much for joining me here! Hope to see you again next time! 

Signing off,

Anirudh Karla