MSRA-0546

A 28-year-old female presents to the ENT specialists with a 1-month-history of severe otalgia, temporal headaches, and purulent otorrhoea. She has a medical history of type one diabetes mellitus and no allergies. On examination, the left external auditory canal and periauricular soft tissue are erythematous and tender. What is the most suitable antibiotic treatment for this patient?