Correct Answer: D

Rationale: Losing weight in an infant, especially when combined with spitting up milk, requires immediate intervention to address potential health concerns.

Correct Answer: C

Rationale: Administering prescribed opioid analgesics is the most appropriate nursing intervention to alleviate severe abdominal pain in a patient with acute pancreatitis. Opioid analgesics help manage severe pain effectively in such cases. Encouraging oral intake of clear fluids may exacerbate symptoms due to the need for pancreatic rest. Placing the patient in a supine position can worsen the pain by increasing pressure on the abdomen. Applying a heating pad is contraindicated as heat can potentially increase inflammation and discomfort in acute pancreatitis.

Correct Answer: C

Rationale: The rapid, deep (Kussmaul) respirations in a patient with diabetic ketoacidosis indicate a metabolic acidosis, necessitating correction with a saline bolus to prevent hypovolemia, followed by insulin administration to facilitate glucose re-entry into cells. Oxygen therapy is not warranted as the increased respiratory rate is not due to hypoxemia but is compensatory in response to acidosis. Encouraging slow breathing or administering lorazepam would be inappropriate as they can worsen the acidosis by suppressing the compensatory respiratory effort.

Correct Answer: A

Rationale: Patients on warfarin should avoid foods high in vitamin K because vitamin K can interfere with the anticoagulant effect of the medication. Warfarin works by inhibiting vitamin K-dependent clotting factors, so consuming large amounts of vitamin K-rich foods may decrease the effectiveness of the medication.

Correct Answer: A

Rationale: The correct answer is A: Liver function tests. Patients on atorvastatin should have their liver function tests monitored periodically to detect any potential liver damage. Atorvastatin, a statin medication used to lower cholesterol levels, can rarely cause liver enzyme abnormalities, so regular monitoring is essential to identify any adverse effects early on.