问题
单项选择题
A toddler with croup is given a vaponefrin updraft because of increasing respiratory distress. The nurse evaluates the treatment as being effective when see which of the following
A．The child's color is normal.
B．The child's retractions are less severe.
C．The child's heart rate is 100 bpm.
D．The child's pulse oximeter reads 90.
答案
参考答案：B
解析：Vaponefrin is epinephrine in an inhalant form. It is given to decrease inflammation in the upper airway through vasoconstriction. It also has bronchodilator effects. In the case of croup, epinephrine is used to increase the opening of the narrowed airway. A decrease in the severity of retractions is the only answer indicating a change that reflects an increase in the airway opening.