Correct Answer: B

Rationale: Administering the scheduled dose is appropriate in this scenario as the heart rate of 128 bpm falls within the acceptable range for a two-year-old child with heart failure. It indicates that the child may benefit from the therapeutic effects of digoxin. Monitoring the heart rate closely after administration is essential to ensure the medication's effectiveness and safety.

Correct Answer: A

Rationale: The correct answer is A. Duchenne muscular dystrophy is an X-linked recessive disorder that primarily affects males. It is crucial for the nurse to explain to the parents that this condition follows an inheritance pattern where the gene mutation responsible for the disorder is located on the X chromosome. Males have only one X chromosome, so if they inherit the mutated gene, they will develop the disease. Females, on the other hand, have two X chromosomes, providing a backup copy that can compensate for the mutation. Understanding this inheritance pattern is essential for family planning decisions, as the risk of passing on the disorder to future children can be explained based on this genetic inheritance.

Correct Answer: C

Rationale: When a client expresses concerns about family dynamics, it is important to explore their feelings and reactions to the situation. By asking about the client's response to his mother's anger, the nurse can gain insight into the client's emotions, thoughts, and coping mechanisms. Understanding these aspects is crucial in providing appropriate support and guidance.

Correct Answer: C

Rationale: After completing the chemotherapy infusion via the implanted medication port, the nurse should flush the mediport with saline and heparin solution. This action helps prevent clot formation in the port, ensuring its patency for future use and reducing the risk of complications associated with catheter occlusion.

Correct Answer: C

Rationale: Weighing the child daily is crucial in managing a child with acute glomerulonephritis as it helps in monitoring fluid retention, which is a key concern in this condition. Daily weight monitoring allows healthcare providers to assess changes in fluid status and adjust treatment accordingly. It is an essential component of the care plan to ensure the child's health status is closely monitored during the management of acute glomerulonephritis.