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Why is coronary angiography done?

Coronary angiography is a diagnostic procedure done to detect obstructions in coronary arteries that can lead to heart attacks. The results of the procedure reveal the number of coronary arteries blocked, the location of the block and the degree of blockage.

How is coronary angiography done?

A needle is inserted either into an artery in the groin or in the elbow after the area is numbed with a local anaesthetic.

A tiny wire is threaded and the needle is removed.

A sheath is inserted into the artery through which the catheter is threaded and guided to the blood vessel with the help of an X-ray machine producing real time pictures.

Once the catheter is positioned, a contrast dye is injected through it and its flow is studied using X-rays.

The catheter is finally removed and the area is pressed for 10-20 minutes to stop bleeding.

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