You see a 12-year-old boy with a complaint of frequent urina…

You see a 12-year-old boy with a complaint of frequent urination. His mother is concerned because her father has had type 2 diabetes mellitus for several years. Urinalysis in the office shows the presence of glucose. You suspect that the boy may have type 1 diabetes mellitus because he also has

A 74-year-old man who self-describes himself as being Africa…

A 74-year-old man who self-describes himself as being African-American is taking metoprolol, losartan, furosemide, and digoxin to treat his heart failure. However, he still has some symptoms of heart failure. The most appropriate drug to add to this patient’s drugs is