Contrast Media in Radiology

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Which of the following drug classes can potentially lower the seizure threshold when used in combination with contrast media during cerebral angiography?

Antipsychotics, antihistamines, analeptics, thioxanthenes, and tricyclic antidepressants (correct)
Benzodiazepines, opioids, corticosteroids, and nonsteroidal anti-inflammatory drugs
Antibiotics, antifungals, antivirals, and antimalarials
Beta-blockers, calcium channel blockers, angiotensin-converting enzyme inhibitors, and diuretics

Which of the following statements regarding the effects of contrast media on cardiac function is correct?

Contrast media can increase the inotropic effects of digitalis and calcium channel blockers.
Contrast media can enhance the effects of digitalis and calcium channel blockers.
Contrast media have no significant interactions with drugs affecting cardiac function.
Contrast media can potentially cause hypotension in patients taking calcium channel blockers. (correct)

Which of the following statements regarding the effects of contrast media on isotope studies is true?

Iodinated contrast media have no significant impact on diagnostic scintigraphy or radioiodine treatment.
Iodinated contrast media can interfere with the distribution of $^{99m}$Tc-pyrophosphate isotope for bone imaging. (correct)
Iodinated contrast media can increase the sensitivity of diagnostic scintigraphy.
Iodinated contrast media can enhance the uptake of radioiodine during treatment.

Which of the following statements regarding mixing contrast media with other drugs is correct?

Contrast media should not be mixed with other drugs before intravascular use. (B) Signup and view all the answers

Which of the following statements regarding the effects of contrast media on biochemical assays is correct?

The effects of contrast media on biochemical assays are not mentioned in the given text. (C) Signup and view all the answers

Which of the following contrast materials can be used for ultrasound imaging?

Nanobubbles and microbubbles (C) Signup and view all the answers

Which of the following statements regarding the use of saline as a contrast material is correct?

Saline is used as a negative contrast agent for computed tomography (CT) imaging. (A) Signup and view all the answers

Which of the following statements regarding the use of gas as a contrast material is correct?

Gas can be used as a contrast agent for ultrasound imaging of the gastrointestinal tract. (C) Signup and view all the answers

Which of the following statements regarding gadolinium-based contrast agents (GBCAs) is correct?

GBCAs are commonly used for magnetic resonance imaging (MRI). (D) Signup and view all the answers

Which of the following statements regarding the administration of contrast media and other drugs is correct?

If the same venous access is used, there should be adequate flushing with normal saline before injecting other drugs. (B) Signup and view all the answers

Drug classes that can lower seizure threshold with contrast media

Certain drug classes, like antipsychotics, antihistamines, analeptics, thioxanthenes, and tricyclic antidepressants, can potentially increase the risk of seizures when used alongside contrast media during cerebral angiography.

Effect of contrast media on patients taking calcium channel blockers

Contrast media can potentially cause a drop in blood pressure (hypotension) in patients who are already taking calcium channel blockers.

Effect of iodinated contrast media on isotope studies

Iodinated contrast media can interfere with the accuracy of bone imaging using the $^{99m}$Tc-pyrophosphate isotope.

Mixing contrast media with other drugs

It's crucial to avoid mixing contrast media with other drugs before injecting them into the bloodstream.