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Pharmacology Ch. 6 and 7
Terms in this set (33)
When using any type of intravenous contrast media,
a thorough medical history should be taken by the radiographer.
The osmotic effects of ionic contrast agents are a result of the movement of:
water from nearby tissue cells pulled into the vascular system causing increase in volume and pressure.
Intravascular contrast media is primarily excreted through:
An undesirable characteristic of intravenous high osmolarity ionic contrast is:
enhance the low subject contrast of anatomic structures
A typical double contrast BE of the large intestine is an example of:
barium and room air
When iodinated nonionic contrast is injected into an artery, visualization of the artery occurs because:
Iodine has an atomic number of 53 and it is radiopaque.
Barium sulfate is contraindicated in patients with:
Patients with a possible duodenal perforation, a high risk of perforation, and a known severe hypersensitivity to barium sulfate.
All of the following is true regarding barium sulfate except:
when mixed with water it dissolves completely.
After of an injection of iodinated nonionic contrast, the patient begins to complain of itching and difficulty breathing. This would be an indication:
The patient is having an allergic reaction and notify the radiologist.
A contrast agent for a MRI examination is:
An example of a water soluble contrast is:
Diatrizoate meglumine and Diatrizoate sodium solution
Following a barium examination, a radiographer should instruct the patient to _________________________________________.
Take a laxative and drink plenty of fluids
Nonionic iodinated contrast differs from ionic contrast because nonionic contrast
does not dissociate into cations and anions
A patient having a vasovagal reaction:
A patient having a vasovagal reaction will feel faint, have low blood pressure and a slow heart rate.
should be discontinued for 48 hours before and 48 hours following an intravenous contrast injection
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