A second grader enters the school nurse's office crying and states, "I feel sick. My tummy hurts." The nurse replies, "I'll call your mommy or daddy to come pick you up." The child replies, "I don't have a mommy. I have two daddies." Which of the following comments by the nurse is appropriate?

Choice A reason: This response is not appropriate because it does not address the mother's concern about antibiotics. It also implies that the nurse is making a medical decision for the child, which is beyond the scope of practice.

Choice B reason: This response is not appropriate because it does not provide any reassurance or education to the mother. It also sounds dismissive of the child's condition and the mother's worry.

Choice C reason: This response is not appropriate because it undermines the authority and judgment of the pediatrician. It also creates doubt and confusion in the mother's mind about the quality of care her child is receiving.

Choice D reason: This response is appropriate because it explains the rationale for not prescribing antibiotics for an ear infection. It also educates the mother about the difference between viral and bacterial infections and the appropriate use of antibiotics.

Choice A reason: Stridor is a high-pitched, harsh sound that occurs during inspiration. It is caused by the narrowing of the upper airway due to inflammation and edema. Stridor is a characteristic sign of croup, also known as laryngotracheobronchitis.

Choice B reason: Wheezes are high-pitched, musical sounds that occur during expiration. They are caused by the narrowing of the lower airway due to bronchoconstriction or mucus. Wheezes are more common in asthma than in croup.

Choice C reason: Crackles are fine, crackling sounds that occur during inspiration. They are caused by the opening of collapsed or fluid-filled alveoli. Crackles are more common in pneumonia or heart failure than in croup.

Choice D reason: Rhonchi are low-pitched, snoring sounds that occur during expiration. They are caused by the vibration of mucus in the large airways. Rhonchi are more common in bronchitis or cystic fibrosis than in croup.