Risks

As with most procedures done on your heart and blood vessels, a coronary angiogram has some risks, such as radiation exposure from the X-rays used. Major complications are rare, though. Potential risks and complications include:

• Heart attack
• Stroke
• Injury to the catheterized artery
• Irregular heart rhythms (arrhythmias)
• Allergic reactions to the dye or medications used during the procedure
• Kidney damage
• Excessive bleeding
• Infection