
A 69-year-old woman was hospitalized with fever, chills, and nausea. Three weeks earlier, she had received a 2-week course of oral levofloxacin for pneumonia, which resolved. Her history included rheumatic heart disease; diabetes mellitus; depression; a hysterectomy; 2 mitral commissurotomies; nonrepairable mitral valve regurgitation, for which she received a St Jude Medical bileaflet valve; a left-sided cerebrovascular accident; and paroxysmal atrial fibrillation. Her medications included verapamil, furosemide, metoprolol, potassium chloride, metformin, nortriptyline, and warfarin. She denied tobacco and alcohol use.



























































































































































