A cerebral angiogram is a diagnostic procedure that provides images of the arteries in the brain or head region. It helps in the diagnosis of conditions that affect the blood vessels in the head and neck. Problems that occur in the blood vessels include rupture or blockage of the arteries due to buildup of fatty plaque. Blockage of blood vessels could put the individual at an increased risk of stroke. Conditions such as cerebral aneurysm may also be diagnosed through a cerebral angiogram.
Usually before the Cerebral Angiogram procedure, blood and urine samples may be collected from the individual and an EKG or x-ray of the chest may also be performed. A mild sedative is administered to the individual intravenously. Pain and anxiety may also be alleviated through medication. In the procedure room, the individual is asked to position himself on an x-ray table. His vital signs are monitored through a heart monitor, pulse oximeter and blood pressure cuff. The head is kept still on the table by securing it with straps and a sterile sheet is placed over the rest of the individual’s body. A local anesthetic is administered to the area where the catheter will be inserted. A small incision is made and after inserting a guide wire through the artery, the catheter is slid through. The doctor is able to observe the catheter as it travels through the blood vessels in the brain. Once it reaches its position, the dye is injected.
The individual is likely to experience a warm flushed sensation. Nausea and a metallic taste in the mouth are also common. Once the procedure is complete, the catheter is removed and pressure is applied to stop bleeding in the area of the incision, following which a dressing is placed.
A risk that is commonly associated with a cerebral angiogram is that of an allergic reaction to the contrast dye. It is recommended that the individual inform the doctor about any allergies. Allergies to iodine, strawberries or shellfish must be especially reported to the doctor. There is also a small chance that the catheter may cause rupture or dislocation of a piece of fatty plaque or clotted blood which can cause obstruction of blood flow. Pregnant or nursing women or those that are trying to conceive must discuss the requirement of this test with the doctor. These procedures are usually not performed on pregnant women due to the possibility of damage to the fetus due to the radiation.
Submitted by M T on February 16, 2010 at 03:18