Furosemide Administration Priority Intervention

A 65-year-old patient with a history of hypertension and heart failure is admitted to the hospital for shortness of breath. The healthcare provider orders furosemide (Lasix) 40 mg IV push to manage the patient’s fluid overload. As a nursing student, you must prepare to administer this medication. Which of the following actions is the priority nursing intervention before administering furosemide?