________ is an irregular structural development.

Which of the following dressings would be most appropriate for a typical arterial insufficiency ulcer?

A. An alginate, covered by a gauze pad and secured with a gauze roll. B. An amorphous hydrogel, covered with a gauze pad and secured with a gauze roll. C. An impregnated gauze and gauze pad, secured with an Ace bandage. D. A charcoal dressing secured with a gauze roll.

Which of the following are variables controlled during pressure assist/control mechanical ventila-tion? 1. Volume 2. Flow 3. Time 4. Pressure

a. 1 and 3 only b. 1, 2, and 3 only c. 3 and 4 only d. 1, 2, 3, and 4