The nurse is assessing a child with epiglottitis in the emergency department. The child has a sore throat and is drooling. Examining the child's throat using a tongue depressor might precipitate which of the following?

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: Calling the physician is not the first action because it would delay the immediate intervention of oxygen administration, which is critical for a patient with hypoxia. The physician should be notified after initiating oxygen therapy and assessing the patient's condition.

Choice B reason: Placing the patient on 10 L/min oxygen per nasal cannula is not the first action because it is too high of a flow rate for a two-year-old patient, and it could cause oxygen toxicity or barotrauma. The appropriate oxygen delivery device and flow rate should be determined based on the patient's age, weight, and clinical status.

Choice C reason: Assessing the patient is not the first action because it would also delay the immediate intervention of oxygen administration. The patient's pulse oximetry reading indicates severe hypoxia, which requires prompt treatment to prevent organ damage or death. The patient should be assessed after initiating oxygen therapy and monitoring vital signs.

Choice D reason: Administering oxygen and monitoring vital signs while calling the physician is the correct answer because it provides the most effective and timely response to the patient's hypoxia. Oxygen administration improves the patient's oxygen saturation and tissue perfusion, while vital sign monitoring helps to evaluate the patient's response to therapy and identify any complications. Calling the physician informs them of the situation and allows them to order further interventions or tests as needed.

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