As with all procedures, intracranial stenting involves risks and potential complications. Complications may become serious and life threatening in some cases. Complications of intracranial stenting can occur during the procedure or recovery. Because of these risks, angioplasty and stenting is typically reserved for patients with severe stenosis that doesn’t respond well to medication. Risks and potential complications of intracranial stenting include: Adverse reaction or problems related to sedation or medications, such as an allergic reaction and problems with breathing Bleeding Blood clot Damage to an artery from the catheter or stent Exposure to ionizing radiation, which may be harmful in excessive doses Infection Kidney injury from the contrast agent, especially if you already have kidney problems Recurrence of artery narrowing or blockage Stroke Reducing your risk of complications You can reduce the risk of some complications by following your treatment plan and: Following activity, dietary and lifestyle restrictions and recommendations before your procedure and during recovery Informing your doctor if you have kidney disease or diabetes Informing your doctor or radiologist if you are nursing or there is any possibility that you may be pregnant Notifying your doctor immediately of any concerns, such as bleeding, fever, or increase in pain Taking your medications exactly as directed Telling all members of your care team if you have any allergies