Correct Answer: A

Rationale: Administering a bronchodilator will help open the airways and improve breathing.

Correct Answer: A

Rationale: The correct answer is A. Duchenne muscular dystrophy is an inherited X-linked recessive disorder that primarily affects male children in the family. Since it is X-linked, sons inherit the mutation from their mothers who are carriers of the abnormal gene. Therefore, the nurse should explain to the parents that any future sons they have would have a 50% chance of inheriting the mutation and having DMD, while daughters would have a 50% chance of being carriers like the mother.

Correct Answer: A

Rationale: The practical nurse should advise the mother to continue providing the oral rehydration solution (ORS) frequently in small amounts. It is essential to continue ORS administration to prevent dehydration, even if the child is occasionally vomiting. Small, frequent amounts of ORS help maintain hydration levels in children with acute diarrhea and mild dehydration.

Correct Answer: B

Rationale: Acknowledging the child's fear and providing information about what to expect can help alleviate anxiety.

Correct Answer: B

Rationale: Administering the scheduled dose is appropriate in this scenario since the heart rate of 128 bpm is within an acceptable range for a 2-year-old child with heart failure. Monitoring for signs of digoxin toxicity is important; however, the immediate action required is to administer the scheduled dose as prescribed based on the heart rate assessment.