单选题 On reviewing the child's laboratory results, the nurse notes a serum potassium level of 3.3mEq/L. Which of the following would the nurse encourage the child to drink?
A. Cranberry juice.
B. Apple juice.
C. Grape juice.
D. Orange juice.

【正确答案】 D

【答案解析】A serum potassium level of 3.3 mEq/L is low for a child; the normal range is 3.5 to 5.0 mEq/L. Because orange juice is the best source of potassium, the nurse would encourage its consumption. Additional sources of potassium are bananas, cantaloupe, grapefruit juice, tomato juice, honeydew melon, nectarines, and boiled and baked potatoes.