Correct Answer: B

Rationale: Auscultating the heart and lungs while the infant is held can provide important diagnostic information in assessing the cardiac and respiratory status of the infant who had surgical correction for tetralogy of Fallot. This intervention can help the nurse identify any abnormal heart or lung sounds, which may indicate complications or issues that need further evaluation or intervention.

Correct Answer: A

Rationale: Assessing tube placement is critical before initiating a tube feeding to verify its correct positioning in the stomach. This assessment helps prevent potential complications such as aspiration if the tube is incorrectly placed in the respiratory tract. Checking bowel sounds, abdominal circumference, and tube patency are important assessments in the care of a child receiving tube feedings, but ensuring proper tube placement takes precedence to ensure safe and effective delivery of nutrition.

Correct Answer: B

Rationale: A coloring book with crayons is the best choice as it is safe, engaging, and can provide a distraction during treatment without posing any safety risks. Coloring activities can help keep the child occupied, promote creativity, and offer a calming and therapeutic outlet during chemotherapy sessions.

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.

Correct Answer: B

Rationale: Sudden relief of pain in a child with suspected appendicitis should be reported immediately as it may indicate a rupture of the appendix, which is a medical emergency. Sudden relief of pain is concerning because it can be a sign of a perforated appendix, leading to peritonitis and sepsis.