A 43-year-old woman with recurrent urinary tract infections who is usually sensitive to ciprofloxacin now has three consecutive UTIs in a 4-month period. Each time, the culture and sensitivity reveal resistance to ciprofloxacin. What is the most likely source of resistance?

A 43-year-old woman with recurrent urinary tract infections who is usually sensitive to ciprofloxacin now has three consecutive UTIs in a 4-month period. Each time, the culture and sensitivity reveal resistance to ciprofloxacin. What is the most likely source of resistance?

A 34-year-old construction worker injured his right leg while on the job. His medical history includes poorly controlled Type-2 diabetes mellitus. He now presents with cellulitis in his right leg, for which he is given empiric IV vancomycin. He also complains of nausea, for which he is given an antiemetic. Which of the following antiemetics is also an antihistamine?

A 75-year-old man with a 40-pack-year history of smoking and known chronic obstructive pulmonary disease complains of intermittent cough. Physical examination reveals wheezing, which is suggestive of bronchospasm. Which of the following is the most appropriate treatment for this patient?

A 33-year-old pregnant woman begins taking a new drug, Drug X, for morning sickness. Drug X has been found to have adverse fetal effects in animal models, but no adequate human studies have been done. Under which FDA pregnancy category would Drug X fall?

A 23-year-old woman with lifelong epilepsy controlled with medication has just found out that she is pregnant. She has seizures once a month but seem to be controlled at present. Which of the following statements about epilepsy in pregnancy is true?