Which category of drug is used to outline hollow or tubular anatomical structures for radiographic visualization?

________ codes identify billable services provided to patients

a. Diagnosis b. Procedure c. Patient d. Information

Which of the following patients demonstrates clearly that they can maintain their own airway and breathing?

A) An 18-year-old man vomiting in his sleep after drinking too much at a party. B) A 62-year-old woman with shortness of breath from an acute onset of pulmonary edema. C) A 28-year-old man who is hypotensive and is complaining of palpitations. D) A 42-year-old man who appropriately answers all of your questions with full sentences.