The patient with arteriovenous malformation who takes a monoamine oxidase inhibitor for depression develops an upper respiratory infection. The nurse requests a prescription for which medication?

The nurse is assigned to care for a 31-year-old male with a past medical history significant for long-standing diabetes mellitus and hypertension. Current medications are metformin, furosemide, and captopril. Laboratory tests reveal serum potassium of 3.2 mEq/L, so the patient is started on spironolactone. The nurse provides education about which side effect of therapy?

The patient with a heart rate of 233 bpm has been diagnosed with supraventricular tachycardia on electrocardiogram (ECG). The nurse prepares to administer which medication?