Explain the term retrograde as it relates to an imaging process

How many digits do modifiers have?

a. 2 b. 3 c. 4 d. 5

You arrive on the scene of a patient who is unconscious, with a history of diabetes mellitus. They present with very rapid, deep respirations that are known as:

A) Kussmaul's respirations. B) Biot's. C) Cheyne-Stokes. D) apneustic respirations.