Answer to Question 1
ANS: D
Play techniques that can be used for younger children to extend their expiratory time and increase expiratory pressure include blowing cotton balls or a ping-pong ball on a table, blowing a pinwheel, blowing bubbles, or preventing a tissue from falling by blowing it against the wall. Increased fluids, increased use of a Pulmicort inhaler, or suppressing a cough will not increase expiratory effectiveness.
Answer to Question 2
ANS: D
Normally sweat chloride content is less than 40 mEq/L, with a mean of 18 mEq/L. A chloride concentration greater than 60 mEq/L is diagnostic of CF; in infants younger than 3 months, a sweat chloride concentration greater than 40 mEq/L is highly suggestive of CF.