Seek your doctor’s attention immediately if you experience any of the following after the angiography procedure: 

• Bleeding does not stop even after applying the pressure or restarts again,
• Pain is not going even after taking the painkillers,
• Redness or Swelling at the skin at the site of catheter insertion,
• If there is a change in the color or temperature of the area where the catheter was inserted 
• Inflammation or formation of a lump that is sore to touch at the catheter insertion site.

 Other minor complications or side effects after the angiography may include:

• Excessive bleeding at the incision site,
• Infection at the incision site,
• A mild to moderate allergic reaction to the contrast dye.

 Do's for Angiography:

• Follow directions: Comply with your doctor’s pre-test instructions, including any fasting requirements. 
• Notify your physician: Provide information about allergies, prescription drugs, or medical issues. 
• Remain composed: Remain calm throughout the process; it’s usually not painful or dangerous. 
• Drink plenty of water: Drinking plenty of water will aid in the dye’s removal following the treatment. 
• Watch for problems: Report strange symptoms, such as bleeding at the catheter site, edema, or chest pain. 

 Don’ts for Angiography:

• Eat nothing: Refrain from eating or drinking anything for a few hours before the test. 
• Don’t drive 
• Avoid taking specific medications: As directed by your physician, stay away from drugs such as blood thinners.