A 43-year-old woman with asthma is prescribed propranolol for migraine prophylaxis. She returns to the clinic with shortness of breath. What is the most likely cause?

A 67-year-old male is being treated with spironolactone for heart failure. What concurrent drug would most increase his risk for life-threatening hyperkalemia?

A patient receiving amitriptyline for chronic neuropathy is found to have a heart rate of 112 bpm, dry mouth, and urinary retention. What pharmacologic effect explains these findings?

A 70-year-old male with COPD is prescribed theophylline. What should the nurse practitioner consider when co-prescribing ciprofloxacin?

A patient is started on rifampin for latent tuberculosis. What should the nurse practitioner include in teaching?

A 28-year-old patient is prescribed lisinopril. After 5 days of therapy, the patient develops a persistent dry cough. What is the most appropriate action?

A 35-year-old woman is started on oral contraceptives. Which concurrent medication would most reduce the effectiveness of her birth control?

A nurse practitioner prescribes ciprofloxacin for a complicated UTI. Which patient education point is most important regarding this drug’s interaction with food?

A patient with severe hypertension is treated with hydralazine. Which adverse effect should the nurse practitioner monitor for?

A 59-year-old man with atrial fibrillation is prescribed amiodarone. Which baseline test is most essential before initiating therapy?