Correct Answer: A

Rationale: Fussiness and low-grade fever are common side effects of immunizations in infants and usually resolve on their own. It is important for the nurse to educate the mother about these expected reactions to help ease her concerns. Immediate evaluation or giving aspirin to an infant for fever is not necessary or safe, as aspirin can be harmful to infants.

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.

Correct Answer: B

Rationale: The correct answer is B. Airway clearance exercises are essential for individuals with cystic fibrosis to prevent mucus buildup in their lungs. It is crucial to perform these exercises regularly, even when feeling well, to maintain lung health and prevent complications. Therefore, the statement indicating that the exercises are not needed if feeling okay shows a misunderstanding and requires further teaching.

Correct Answer: A

Rationale: Duchenne muscular dystrophy is an X-linked recessive disorder caused by mutations in the DMD gene on the X chromosome. This disorder primarily affects males because they have one X chromosome, inherited from their mothers, who may be carriers of the mutated gene. Females have two X chromosomes, providing a protective effect as the normal gene on one X chromosome can compensate for the mutated gene on the other. Therefore, the nurse should explain to the parents that Duchenne muscular dystrophy is an inherited X-linked recessive disorder, which is why their son has the disease and why there is a risk of passing it on to future sons.

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.