Radiopaque Agents - Diagnostic
Radiopaque Agents *** Before Using *** Fore Safe Use *** Side Effects
Before Having This Test
In deciding to use a diagnostic test, any chance of the test must be weighed
against the good it will do. This is a decision you will make.
Always test results may be effected by other things. For radiopaque agents,
the following must be considered
Allergic reaction
Tell your family doctor if you have any unusual or
allergy to iodine, to products containing iodine - for example, iodine-containing
foods such as seafood, cabbage, kale, rape "turnip-like vegetable ", turnips,
or iodized salt, or to any radiopaque agent. Also tell your family doctor if you
are allergic to any other substance, such as sulfites or other preservatives.
Pregnancy care
Studies have not been done with most of
the radiopaque agents. However, iohexol, iopamidol, iothalamate, ioversol,
ioxaglate and metrizamide have not been shown to cause birth defects or other
problems in animal studies. Some of the radiopaque agents, such as diatrizoates
have, on rare occasions, causing hypothyroidism - underactive thyroid in the
baby when they were taken late in the pregnancy. Always x-rays of the abdomen
are usually not recommended during pregnancy. This is to avoid exposing the
fetus to radiation. Be sure you have discussed this with your family doctor.
Breast-feeding problem
Although some of these radiopaque agents pass into
the breast milk, they have not been shown to cause problems in nursing babies.
However, it may be necessary for you to stop breast-feeding temporarily after
receiving a radiopaque agent. Be sure you have discussed this with your family doctor.
Use for Children
Children, especially those with other medical problems,
may be especially sensitive to the effects of radiopaque agents. This may
increase the risk of side effects.
Elderly care
Elderly people are especially sensitive to the effects
of radiopaque agents. This may increase the risk of side effects.
Other Information for using
The presence of other medical problems may effect
the use of radiopaque agents. Make sure you tell your family doctor if you have any
other medical problems, especially:
-
Asthma, hay fever, or other allergies - history of If you have
a history of these conditions, the risk of having a reaction, such as an allergic
reaction to the radiopaque agent, is greater
-
Diabetes mellitus - sugar diabetes There is a greater risk
of having kidney problems
-
High blood pressure - severe
-
Pheochromocytoma - PCC Injection of the radiopaque agent may
cause a dangerous rise in blood pressure
-
Kidney disease - severe More serious kidney problems may develop;
also, the radiopaque agent may build up in the body and cause side effects
-
Liver disease The radiopaque agent may build up in the body
and cause side effects
-
Multiple myeloma - bone cancer Serious kidney problems may
develop in diseaseds with this condition
-
Overactive thyroid A sudden increase in symptoms, such as fast
heartbeat or palpitations, unusual tiredness or weakness, nervousness, excessive
sweating, or muscle weakness may occur
-
Sickle cell disease The radiopaque agent may promote the formation
of abnormal blood cells
Preparation for This Test
Your family doctor may
have special instructions for you in preparation for your test. He or she
might prescribe a special diet or use of a laxative, depending on the type
of test. If you have not received such instructions or if you do not understand
them, check with your family doctor in advance.
For some tests your family doctor may tell you not to eat for few hours before
having the test. This is to prevent any food from coming back up and entering
your lungs during the test. You may be allowed to drink small amounts of clear
liquids; however, check first with your family doctor.
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