A 1-month-old male infant is brought to the emergency depart…

A 1-month-old male infant is brought to the emergency department because he has been having seizures for the past 30 minutes The mother has a history of alcohol use while she was pregnant with the patient. Physical examination shows hypertelorism, shortened philtrum, and low-set ears. Laboratory studies show hypocalcemia and hyperphosphatemia. Chest x-ray study shows absence of a thymic shadow. After stabilizing the patient’s condition and before discharge, which of the following is the most appropriate screening test?

A 7-year-old boy presents to the ED with a one day history o…

A 7-year-old boy presents to the ED with a one day history of vomiting, fever, chills, and right upper quadrant pain. He is lethargic with diffuse abdominal pain and right costovertebral angle pain. His UA shows + leukocyte esterase, nitrites, and pyuria. Which antimicrobrial agent would be the best initial choice?