Angiography/Cardiac Cath

Angiography (Cardiac Catheterization): Procedure, Benefits & Risks

Angiography, also known as Cardiac Catheterization, is a minimally invasive diagnostic procedure used to visualize the coronary arteries (blood vessels supplying the heart).

A special dye (contrast) is injected through a catheter, and X-ray imaging is used to detect blockages, narrowing, or abnormalities in the arteries.

Why is Angiography Done?

Doctors recommend angiography to:

• Detect coronary artery disease (blockages)
• Evaluate chest pain (angina)
• Diagnose heart attack causes
• Assess blood flow to the heart
• Plan treatments like angioplasty or bypass surgery
• Check previous stents or grafts

Types of Angiography

• Coronary Angiography: Focuses on heart arteries; most common type
• Peripheral Angiography: Examines blood vessels in limbs
• Cerebral Angiography: Evaluates blood vessels in the brain

How is the Procedure Performed?

• Local anesthesia is given
• A thin tube (catheter) is inserted through the wrist (radial artery) or groin (femoral artery)
• The catheter is guided to the heart
• Contrast dye is injected into the arteries
• X-ray images are taken to visualize blood flow

The procedure usually takes 20–40 minutes.

Benefits of Angiography

• Accurate detection of artery blockages
• Minimally invasive procedure
• Quick diagnosis and immediate results
• Helps guide further treatment
• Can be combined with angioplasty if needed

Risks and Complications

Angiography is generally safe, but possible risks include:

• Bleeding or bruising at the insertion site
• Allergic reaction to contrast dye
• Infection (rare)
• Kidney issues (in high-risk patients)
• Irregular heartbeat (rare)

Recovery After Angiography

• Observation for a few hours after the procedure
• Same-day discharge in most cases
• Avoid heavy activity for 24–48 hours
• Drink plenty of fluids to flush out the dye

When is Angiography Recommended?

Your doctor may advise angiography if you have:

• Persistent chest pain
• Abnormal ECG or stress test results
• Suspected coronary artery disease
• History of heart attack
• Need for further cardiac evaluation

Preparation for Angiography

• Fasting for 4–6 hours before the procedure
• Inform your doctor about medications and allergies
• Blood tests may be required
• Arrange for someone to accompany you