Correct Answer: A

Rationale: Hypopituitarism is characterized by linear growth retardation with skeletal proportions normal for chronologic age. This means that although the child experiences growth retardation, their skeletal proportions are appropriate for their age, which distinguishes it from other conditions like precocious puberty or equal height and weight affectation. Choice B is incorrect as hypopituitarism does not involve precocious puberty. Choice C is wrong as it describes a different growth pattern not typical of hypopituitarism. Choice D is also incorrect as in hypopituitarism, height and weight are not equally affected, rather the focus is on linear growth retardation with normal skeletal proportions.

Correct Answer: B

Rationale: In situations where a sibling is upset about a family member being hospitalized, suggesting that the sister come to the hospital for a visit can help alleviate her concerns. This allows the sister to see her brother, ask questions, and receive reassurance from seeing him in stable condition. Direct contact and interaction can often provide more comfort and understanding than phone calls or staying at home. Encouraging phone calls (Choice A) might not provide the same level of comfort as a physical visit. While spending extra time with the daughter at home (Choice C) is important, in this scenario, facilitating a visit to the hospital can address the daughter's immediate concerns better. Reminding the parents that it is normal for children to be upset (Choice D) is not as proactive as arranging for the sister to visit her brother.

Correct Answer: A

Rationale: Squatting increases systemic vascular resistance, which leads to a reduction in the right-to-left shunting of blood in children with tetralogy of Fallot. This helps improve oxygenation by balancing the pulmonary and systemic blood flow. The squatting position decreases the pressure in the right ventricle and reduces the magnitude of the right-to-left shunt by increasing afterload, thereby improving oxygenation. Choices B, C, and D are incorrect because squatting does not decrease arterial blood flow away from the heart, is not related to being tachycardic, and does not increase the workload of the heart.

Correct Answer: C

Rationale: Encouraging the child to play with safe medical equipment is the most appropriate technique to reduce stress for a hospitalized child. This technique helps familiarize the child with medical equipment in a non-threatening way, empowering them to feel more in control of the environment. Options A, B, and D may be helpful but do not directly address the child's exposure and interaction with the hospital environment, making them less effective in reducing stress in this context.

Correct Answer: B

Rationale: In typhoid fever, the rash typically appears on the third day after symptoms first appear. This rash can help in diagnosing the disease along with other symptoms such as fever, malaise, and abdominal pain. Choices A, C, and D are incorrect because the rash in typhoid fever usually appears on the third day, not the second, fourth, or seventh day after the symptoms begin.