A 54 year-old male is admitted to the hospital for an abdominal surgery. His current medications include digoxin, enalapril, ibuprofen and ketoconazole. He is on heparin for DVT prophylaxis. His laboratory tests reveal the following: random, non-fasting, serum glucose: 357 mg/dl (normal fasting glucose: 70 – 100 mg/dL; Random, non-fasting: <140 mg/dL) serum potassium 6.2 mEq/L (normal serum potassium: 3.5 - 5.0 mEq/L) You reviewed his medical records as you investigated the etiology of his hyperkalemia. Which of the following is a cause of hyperkalemia, because it inhibits potassium excretion from the body?

A 58-year-old male has come to your primary care center for establishment of care. His medical problems include  heart failure with preserved ejection fraction and hypertension. As you review his medications, you want to make sure he is on the right medications which would be beneficial in the long run. You initiated this patient on lisinopril. As part of patient education, you should inform this patient about which of the following adverse effects of angiotensin-converting enzyme inhibitor? 

A 55 year-old man comes to your office with complaints of gradual breast enlargement over the past 3 months. He has mild tenderness in both breasts, more pronounced on the left side. He also describes psychological discomfort about his appearance, explaining the feelings of embarrassment. His medical history is significant for hypertension, chronic heart failure (NYHA Class II), and type 2 diabetes mellitus. His current medications include spironolactone, metoprolol, metformin, furosemide and aspirin. He does not consume alcohol excessively and denies use of anabolic steroids or recreational drugs. He has no family history of breast cancer or hormonal disorders. On physical examination, you notice a well-appearing male. His blood pressure is 128/80 mm Hg and heart rate is 72 bpm. He has enlarged breasts, but no discharge or lumps. There is mild tenderness on palpation of both breasts. There is no nipple retraction or discharge. Which of his current medications most likely caused his breast condition?