Review Question - QID 108940

A 65-year-old female with metastatic breast cancer presents to the emergency room complaining of severe right hip pain. She is accompanied by her husband who reports that she fell while walking down the stairs. Her right leg is shortened and internally rotated. A radiograph reveals a severely comminuted intertrochanteric femoral neck fracture. She is brought to the operating room where she undergoes a right hip arthroplasty. On post-operative day #3, she develops a fever, chills, lower abdominal pain, dysuria, and frequent urination. Her temperature is 101.1°F (38.4°C), blood pressure is 90/60 mmHg, pulse is 115/min, and respirations are 20/min. Her incision appears clean, dry, and intact. Her lungs are clear to auscultation bilaterally. She is tender to palpation in the right and left lower abdominal quadrants. A Foley catheter is placed. Results from a urine culture on an agar plate are shown in Figure A. Which of the following organisms is most likely responsible for this patient’s current symptoms?