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What are the risks?

Written by : DoctorNDTV Team

This is a safe procedure, however, a small percentage of people may experience adverse effects. These could include an allergic reaction to the dye, which may cause difficulty in breathing, a drop in blood pressure, unconsciousness, or swelling of the skin. The dye may injure the kidneys. However, the special non-ionic dyes used nowadays are quite safe.

The local anaesthetic may not numb the area quite enough and some minor discomfort may be felt. In rare cases, an allergic reaction to the local anaesthetic may occur.

A blood clot around the catheter may block the artery. The catheter may puncture the artery, making it bleed, or knock some debris off the wall of the artery, causing blockage elsewhere in the artery. Surgery may be needed to correct any damage.

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