Cardiac catheterization uses a thin and flexible tube inserted through a blood vessel to evaluate or treat certain heart conditions. Doctors often use this procedure when they need more detail than other heart tests provide. Here is a closer look at cardiac catheterization:
What Is Its Role?
Cardiac catheterization serves two main purposes. It gives doctors a direct view of the heart, and it allows them to treat certain problems during the same session. When a doctor knows how the heart and arteries function, they can plan care with greater precision.
Diagnostic Uses
During a diagnostic catheterization, the doctor injects a special dye, called contrast, through the catheter. The dye appears on X-ray images, which show narrowing or blockages in the coronary arteries. The doctor also measures pressure inside the heart chambers, which provides information about how the heart pumps.
Treatment Uses
Doctors sometimes treat a narrowed artery during the same procedure. They may inflate a small balloon to widen the artery, and they often place a stent, a small mesh tube that holds the artery open. Doctors call this approach angioplasty. Your doctor will explain whether treatment is part of your plan before the procedure begins.
How Should You Prepare?
Preparing for your cardiac catheterization can help the procedure run on schedule. Your care team will give you specific instructions, and you should follow them closely. Ask questions if any step appears unclear. The following steps are key:
- Share your medication list: Tell your doctor about all medicines and supplements, especially blood thinners and diabetes medicines.
- Report allergies: Let your team know about any allergies to contrast dye, iodine, or latex.
- Follow fasting instructions: You may need to stop eating and drinking several hours before the procedure; your team will tell you the exact time.
- Arrange a ride home: You will not be able to drive after the procedure, so plan for someone to take you home.
- Wear loose clothing: Comfortable clothing makes changing easier after the procedure.
What Happens During Catheterization?
Cardiac catheterization takes place in a specialized room called a catheterization lab, or cath lab. A nurse places an IV line in your arm, and you receive medicine to help you relax. You normally stay awake during the procedure, although you may feel drowsy.
Next, the doctor numbs the skin at the wrist or groin, makes a small opening, and inserts a thin sheath into the blood vessel. The catheter passes through this sheath, and the doctor guides it toward the heart using live X-ray images. People may experience pressure rather than pain at the insertion site. Once the catheter reaches the heart, the doctor injects contrast dye and records images. If the doctor finds a narrowed artery, they may perform angioplasty during the same session.
What Happens After Catheterization?
After the procedure, the doctor removes the catheter and sheath. A nurse applies pressure or a closure device to the insertion site, and you rest in a recovery area. If the doctor used the groin, you will need to lie flat for a few hours.
People often go home the same day, while others stay overnight for monitoring. Your care team will provide instructions about activity, bathing, and wound care. Avoid heavy lifting for the period your doctor specifies. Contact your doctor if you notice bleeding, swelling, or changes in color or temperature in the arm or leg.
Schedule Your Cardiac Catheterization Consultation
Cardiac catheterization gives doctors a detailed view of the heart and its arteries and can also treat narrowed arteries in a single session. Your doctor will review the results, often soon after the procedure, to develop a treatment plan tailored to your condition. Contact a qualified cardiovascular specialist near you to schedule your cardiac catheterization consultation today.
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