Correct Answer: A

Rationale: Severe diarrhea can lead to a loss of bicarbonate, resulting in metabolic acidosis. This is a common complication of prolonged or severe diarrhea, especially in children.

Correct Answer: D

Rationale: The correct answer is D: Dramatic play. Dramatic play involves children acting out experiences to better understand them and reduce fear. In this scenario, by giving the teddy bear a 'shot' first, the nurse is engaging in dramatic play to help the child comprehend and feel more comfortable with the upcoming injection.\n A: Critical play involves critical thinking and problem-solving, not acting out scenarios.\n B: Role play typically involves pretending to be someone else, not necessarily acting out a specific experience.\n C: Diversionary activity aims to distract or redirect attention, which is different from the purpose of dramatic play in this context.

Correct Answer: A

Rationale: Nonpathologic cyanosis in newborns shortly after birth is typically present in the feet and hands, known as acrocyanosis. This is a normal finding due to the immature peripheral circulation in newborns. Cyanosis of the bridge of the nose, circumoral area, and mucous membranes indicates generalized cyanosis, which suggests a potential underlying distress or major abnormality. Therefore, choice A is correct as it describes the expected location for nonpathologic cyanosis in newborns, while choices B, C, and D represent areas associated with abnormal cyanosis.

Correct Answer: C

Rationale: Ensuring the dose does not exceed 15 mg/kg is critical to avoid overdose and potential liver damage. Retaking the temperature immediately or using cold compresses is not necessary, and placing a warm blanket could exacerbate the fever.

Correct Answer: D

Rationale: The correct answer is D: Hypertension. Nephroblastoma, also known as Wilms' tumor, often causes hypertension due to its impact on the kidney, which plays a role in regulating blood pressure. Atrial fibrillation (choice A) and endocarditis (choice B) are not typically associated with nephroblastoma. Hyperlipidemia (choice C) is also not a common clinical manifestation of nephroblastoma.