An 8-year-old girl is brought to the pediatrician for a severe sore throat. The pediatrician prescribes penicillin and sends the girl home. Later that day, she develops a diffuse maculopapular rash, shortness of breath, and wheezing. Her parents take her to the emergency department, where she is diagnosed with anaphylaxis and treated successfully with epinephrine. Three months later, the girl has dysuria and urinary frequency. Urine Gram's stain reveals numerous gram-negative rods. Which of the following antibiotics could be safely given to this patient?
A. Ampicillin
B. Aztreonam
C. Cefoperazone
D. Cephalexin
E. Methicillin
F. Oxacillin
G. Ticarcillin
A. Ampicillin
B. Aztreonam
C. Cefoperazone
D. Cephalexin
E. Methicillin
F. Oxacillin
G. Ticarcillin