Correct Answer: C

Rationale: In a congenital cardiac malformation causing right-to-left shunting, the nurse should expect an elevated hematocrit. This occurs because the body compensates for decreased oxygenation by producing more red blood cells. Proteinuria (Choice A) is not typically associated with congenital cardiac malformations causing right-to-left shunting. Peripheral edema (Choice B) is more commonly seen in conditions causing left-sided heart failure. Absence of pedal pulses (Choice D) is not a typical finding in congenital cardiac malformations causing right-to-left shunting.

Correct Answer: A

Rationale: Administering bronchodilators is a crucial nursing intervention for a child with asthma as it helps to open the airways and improve breathing. Bronchodilators work by relaxing the muscles around the airways, making breathing easier for the child. Encouraging physical activity may exacerbate asthma symptoms in some cases, so it is not recommended as a primary intervention. Monitoring oxygen saturation is important in assessing respiratory status, but administering bronchodilators would take precedence in this situation. Providing nutritional support is a general nursing intervention and not specific to managing asthma symptoms.

Correct Answer: B

Rationale: Administering factor VIII in the morning on scheduled days ensures that there is a consistent level of the plasma component throughout the day, especially when the child is active. This timing helps to maintain adequate levels of factor VIII to prevent bleeding episodes. Choice A is incorrect because administering factor VIII only when a bleed is suspected would not provide the consistent prophylactic coverage needed for children with hemophilia. Choice C is incorrect as bedtime administration may not be practical for ensuring the plasma component is available during the child's active hours. Choice D is incorrect because administering factor VIII on a regular schedule, rather than at specific times of the day, may not optimize its effectiveness in preventing bleeding episodes.

Correct Answer: D

Rationale: The correct answer is D: "This is a lifelong problem, and it is recommended that dietary restrictions must be continued." PKU requires a lifelong adherence to a specific diet low in phenylalanine to prevent cognitive and developmental issues. Phenylalanine buildup can lead to irreversible damage, making it crucial for individuals with PKU to maintain dietary restrictions throughout their lives. Choices A, B, and C are incorrect because they do not address the lifelong nature of dietary restrictions necessary for PKU management.

Correct Answer: A

Rationale: The correct answer is A. Most childhood cancers, such as leukemias and sarcomas, affect tissues rather than specific organs, unlike many adult cancers. Choice B is incorrect because childhood cancers can be localized or spread, similar to adult cancers. Choice C is incorrect because childhood cancers can be highly responsive to treatment, especially when diagnosed early. Choice D is incorrect because the majority of childhood cancers cannot be prevented as they are often due to genetic mutations or unknown causes.