Correct Answer: D

Rationale: Rheumatic fever is the most concerning illness in this case. It can develop as a complication of untreated strep throat caused by beta-hemolytic streptococcus. If not properly treated, rheumatic fever can lead to serious complications such as inflamed joints and heart infections. Tetanus is caused by a toxin produced by Clostridium tetani bacteria and is not related to the symptoms described in the scenario. Influenza is a viral respiratory illness and does not typically lead to rheumatic fever. While scarlet fever is also caused by streptococcus bacteria, in this case, the symptoms described are more indicative of rheumatic fever than scarlet fever.

Correct Answer: C

Rationale: Scheduling the visit at a time that is convenient for the family is crucial for ensuring the family's receptiveness and availability, making the visit more productive. Choosing a time when the mother is feeding the infant (choice B) may not necessarily align with the family's overall convenience and may disrupt the feeding routine. Similarly, scheduling the visit when the husband is out of the home (choice A) might not be optimal as it may exclude an important family member and potentially impact the support system. While spending time with the family (choice D) is important, the primary focus should be on accommodating the family's schedule to maximize the effectiveness of the visit.

Correct Answer: B

Rationale: The correct answer is B: 'Ensure that the antibiotic is administered as prescribed.' It is crucial for the parents to follow the prescribed antibiotic regimen to prevent infections and promote proper healing following cardiac surgery. Option A is incorrect because the timing of antibiotic administration may vary depending on the specific medication and instructions. Option C is not necessary and could potentially affect the antibiotic's effectiveness. Option D is not relevant to the administration of the antibiotic and does not ensure proper usage.

Correct Answer: A

Rationale: The correct statement should be, 'We should give this drug after he eats something.' Prednisone should be administered with food to help prevent gastrointestinal upset. Choice B is correct as monitoring for infections is important due to prednisone's immunosuppressive effects. Choice C is correct as prednisone should not be stopped suddenly to prevent withdrawal symptoms. Choice D is correct as weight gain is a common side effect of prednisone.

Correct Answer: A

Rationale: In this scenario, the patient is experiencing airway compromise due to the fall and potential oropharyngeal obstruction from bleeding. Performing a jaw-thrust maneuver with head stabilization helps maintain the airway patency. The next step should be to suction the oropharynx to clear any blood or secretions, which can obstruct the airway and lead to aspiration. Inserting a nasopharyngeal airway may worsen bleeding or cause further injury to the patient's airway. Initiating positive pressure ventilations can be ineffective if the airway is not cleared first. Administering oxygen via mask is not the immediate priority; ensuring a patent airway by suctioning takes precedence.