A nurse is reinforcing teaching with the parent of an infant who is receiving furosemide. The nurse should reinforce with the parent that which of the following laboratory tests will be monitored while the infant is receiving this medication?

Answer: A. Potassium Rationale: A) Potassium: Furosemide is a loop diuretic that can cause significant potassium loss through increased urine output. Monitoring potassium levels is crucial to prevent hypokalemia, which can lead to serious cardiac arrhythmias and muscle weakness. Ensuring potassium levels remain within a normal range helps maintain the infant's overall health and safety while on this medication. B) WBC Count: While it is important to monitor WBC count in various clinical situations, furosemide does not typically affect white blood cell levels. Therefore, monitoring WBC count is not specifically indicated for infants receiving furosemide unless there is another underlying condition that requires it. C) Iron: Iron levels are not typically affected by furosemide. Monitoring iron levels would be more relevant in cases of anemia or other hematologic conditions. Furosemide does not interfere with iron metabolism, so this test is not a priority for infants on this medication. D) Amylase: Amylase is an enzyme related to the pancreas and is typically monitored in conditions such as pancreatitis. Furosemide does not have a direct effect on amylase levels, so monitoring this enzyme is not necessary for infants receiving this diuretic. The focus should be on electrolytes, particularly potassium.