A 43-year-old woman who is obese undergoes laparoscopic cholecystectomy following repeated episodes of right upper quadrant pain caused by cholelithiasis. Over the next 48 h, she is found to have an MRSA wound infection. Her physician administers daptomycin. Which of the following laboratory values should she follow most closely as a result of daptomycin administration?

A 43-year-old woman who is obese undergoes laparoscopic cholecystectomy following repeated episodes of right upper quadrant pain caused by cholelithiasis. Over the next 48 h, she is found to have an MRSA wound infection. Her physician administers daptomycin. Which of the following laboratory values should she follow most closely as a result of daptomycin administration?

A 48-year-old man who is obese and a chronic alcoholic is hospitalized for spontaneous peritonitis. He begins a course of gentamicin as part of an empiric antibiotic regimen. Which of the following medications should the physician avoid prescribing while this patient is taking gentamicin?

A 27-year-old man hospitalized following a kidney transplant develops a high fever, tachycardia, and hypotension. Blood cultures grow Candida albicans. He is started on amphotericin B and flucytosine. Which of the following describes part of flucytosine’s mechanism of action?

A 33-year-old woman with nausea, vomiting, and diarrhea after eating a chicken meal at a country picnic presents to the emergency department. Her serum electrolytes are within normal limits. She is placed on amoxicillin and given an antidiarrheal agent. She returns for follow-up in 1 week with worsening of diarrhea and abdominal pain. What is the most likely explanation for these findings?

A 37-year-old woman with urinary frequency, urgency, and pelvic pain presents to her primary care physician. She has an allergy to quinolones and penicillin. Urinalysis reveals nitrates, leukocytes, and blood. What is the most appropriate treatment for this patient?