What is involved in a double contrast study?

A 2-year-old child is diagnosed with coarctation of the aorta during a routine physical examination. Which of the following findings is most characteristic of this condition?

Once you have your technique set with your survey films, what changes could you have to make when using positive contrast?

What is the preferred contrast agent for an excretory urogram?

If there is a chance of intestinal perforation, which contrast agent should be avoided?

A nurse is providing care for a patient admitted with an acute ST-elevation myocardial infarction (STEMI). Which of the following interventions are appropriate in the management of this condition? Select all that apply.

If you are doing an upper gastrointestinal study on a vicious mixed breed dog that requires sedation, how would you expect this to affect the study?  

When doing a negative contrast retrograde cystography, why is nitrous oxide recommended over room air?

For a dog with suspected megaesophagus, which contrast agent would be recommended for diagnosis?

When are BIPS a good choice of contrast agent?