Risks
The chance of any major problem from an
angiogram is very small, but some problems can occur. In most cases, the
problems occur within 2 hours after the test when you are in the recovery room.
If the problem occurs during the angiogram, the test may not be completed. You
may need urgent treatment that could include surgery.
- There is a chance of an
to the iodine dye. The reaction can
be mild (itching, rash) or severe (trouble breathing or sudden shock). Most
reactions can be treated with medicines. Be sure to tell your doctor if you
have
,
, or iodine allergy or food allergies.
- There is a small chance that the catheter may damage a blood
vessel or dislodge a piece of clotted blood or fat from the vessel wall. The
clot or fat can block blood flow to the brain, arm, leg, or intestine
(bowel).
- Bleeding from the needle site may occur. Also, a blood
clot can form where the catheter was inserted. This may cause some blockage of
the blood flow in the arm or leg.
- The iodine dye used for the test can cause water loss or direct
damage to the kidneys. This is a special concern for people who have kidney
problems,
, or who are
. Special measures are used during the test
to prevent problems for people who need an angiogram and have these
conditions.
- There is always a small chance of damage to cells or
tissue from being exposed to any radiation, even the low level used for this
test.