________ is severe infection due to destruction of subcutaneous tissue and fascia and has a 30 percent mortality rate

Which of the following is the most common radiographic finding that suggests the presence of epiglottitis?

a. Thumb sign b. Flail chest c. Sail sign d. Steeple sign

Preexamination includes all of the following EXCEPT:

a. patient identification b. sample transport c. skin preparation (cleansing) d. sample testing