This test, refered to as a “cath”, uses contrast dye and imaging to detect blockages in heart arteries. During the procedure, a thin, flexible tube called a catheter is gently guided through an artery—usually in your wrist or groin—up to your heart. Through this catheter, your care team can measure blood flow, check for blockages, and take detailed pictures of the heart using contrast dye.
This test helps diagnose conditions like coronary artery disease, valve problems, or heart muscle issues, and it can also guide treatments if needed.
What to Expect
- You may be asked not to eat or drink for a few hours beforehand.
- Your care team will review medications with you and answer any questions.
- An IV will be placed to give you relaxing medication.
- You’ll lie comfortably on a procedure table while your care team monitors you.
- The area (wrist or groin) is numbed, and a small catheter is inserted.
- You may feel some pressure, but the test is generally not painful.
- Contrast dye is used so the arteries and heart chambers show clearly on imaging.
- Most cardiac catheterizations take 30–60 minutes.
- You’ll rest for a short period so the access site can be monitored.
- Most patients go home the same day with simple care instructions.
- Your cardiologist will explain the results and next steps.