Correct Answer: C

Rationale: The correct answer is C, Chickenpox (varicella). Chickenpox is a viral disease characterized by a highly pruritic rash that typically starts on the abdomen and then spreads to other parts of the body, including the face and proximal extremities. It can lead to complications such as pneumonia and encephalitis. Rubella (German measles) presents with a mild rash and swollen lymph nodes; Rubeola (measles) also presents with a rash but starts on the face before spreading downwards; Scarlet fever is caused by Group A Streptococcus bacteria and is characterized by a rash, fever, and sore throat.

Correct Answer: D

Rationale: Surgical repair of patent ductus arteriosus (PDA) aims to prevent increased pulmonary vascular congestion, which can lead to congestive heart failure and respiratory distress. Choice A, pulmonary infection, is not a direct complication of PDA but rather a result of other factors. Choice B, right-to-left shunt of blood, is a characteristic of a different heart condition (e.g., Tetralogy of Fallot) and not specifically associated with PDA. Choice C, decreased workload on the left side of the heart, is not a typical complication of PDA but rather a consequence of left-to-right shunting that can cause volume overload in the pulmonary circulation.

Correct Answer: A

Rationale: After a prolonged hospitalization, a toddler may exhibit excessively demanding behavior as they readjust to being home. This behavior can be a result of the child seeking extra attention and reassurance after a stressful experience. Choices B, C, and D are incorrect because hostility, cheerfulness with shallow attachment, and withdrawal without emotional ties are less likely outcomes in this situation and do not align with common reactions of toddlers after hospitalization.

Correct Answer: A

Rationale: Monitoring fluid status is crucial for a child with congenital heart disease because these children are at risk of fluid overload which can worsen their condition. Monitoring fluid intake and output helps prevent complications like congestive heart failure. Encouraging activity (Choice B) should be individualized based on the child's condition and tolerance, as excessive activity can strain the heart. Promoting a high-calorie diet (Choice C) is not typically recommended for children with congenital heart disease unless specifically indicated, as excessive weight gain can worsen their cardiac function. Maintaining oxygen therapy (Choice D) may be necessary in some cases, but monitoring fluid status is a more fundamental aspect of care for children with congenital heart disease.

Correct Answer: D

Rationale: During crowning, it is essential to apply gentle pressure to the baby's head to prevent rapid delivery, which can lead to potential injuries to both the mother and the baby. Choice A is incorrect because crowning signifies the beginning, not the end, of the second stage of labor. Choice B is incorrect as crowning can occur before or after the amniotic sac ruptures. Choice C is incorrect as transporting the patient during crowning, even if the hospital is close, can be unsafe due to the risk of rapid delivery and complications.