Correct Answer: C

Rationale: The correct answer is C: The insertion of tympanostomy (pressure equalizing) tubes. This treatment measure is appropriate for a child with recurrent otitis media as it helps drain fluid from the middle ear and prevent further infections. Adenoidectomy (choice B) involves the removal of the adenoids, which may not directly address the ear infections. Antibiotic treatment (choice A) has already been ineffective in this case, so alternative measures are necessary. Tonsillectomy (choice D) is not typically indicated for otitis media unless there are specific reasons such as enlarged tonsils contributing to the condition.

Correct Answer: C

Rationale: The correct answer is C: The insertion of tympanostomy (pressure equalizing) tubes. This treatment measure is appropriate for a child with recurrent otitis media as it helps drain fluid from the middle ear and prevent further infections. Adenoidectomy (choice B) involves the removal of the adenoids, which may not directly address the ear infections. Antibiotic treatment (choice A) has already been ineffective in this case, so alternative measures are necessary. Tonsillectomy (choice D) is not typically indicated for otitis media unless there are specific reasons such as enlarged tonsils contributing to the condition.

Correct Answer: D

Rationale: The correct answer is D: Closely monitor abdominal distention. Monitoring the abdomen for signs of distention is crucial in the early detection of necrotizing enterocolitis (NEC). In NEC, the bowel wall is edematous and breaking down, leading to abdominal distention. Holding feedings is important in the management of NEC, as feedings may need to be stopped temporarily. Checking gastric residuals before feedings helps in assessing the infant's tolerance to feedings. Taking rectal temperatures is contraindicated in NEC as it can lead to the perforation of the bowel.

Correct Answer: A

Rationale: Vesicular breath sounds are normally heard over most of the lung fields, except near the trachea and main bronchi, where bronchial or bronchovesicular sounds may be heard.

Correct Answer: A

Rationale: Preschoolers may engage in magical thinking and believe inanimate objects are alive, so the nurse should explain the equipment in a way that reduces fear.