Final answer:
The question pertains to Medicine at the College level. A toddler presenting with symptoms indicative of croup requires interventions such as providing humidified oxygen and possibly administering medications to reduce airway inflammation, while closely monitoring the child's vital signs for any changes.
Step-by-step explanation:
The subject of this question is Medicine, and it is appropriate for a College level of education. A toddler with a barking cough, stridor, and retractions with respiration, who has pink skin and a capillary refill of 2 seconds, may be experiencing symptoms of croup, which is a common viral infection that affects the upper airways. The primary intervention for this condition involves maintaining a clear airway and providing adequate breathing support. 
Nursing interventions typically include calm reassurance to avoid further agitation of the child, administering humidified oxygen for respiratory distress, and in some cases, treatment with nebulized epinephrine or corticosteroids to reduce airway inflammation. The nurse should also closely monitor vital signs, checking for improvements or deteriorations in the child's respiratory status.
It is essential to remember that croup can be life-threatening if not treated promptly and appropriately, and any sign of respiratory distress in a child should be taken seriously and managed with careful clinical judgment and adherence to healthcare protocols.