Review Question - QID 215144

A 23-year-old woman presents to the emergency department with 1 day of severe, worsening abdominal pain. Since she woke up this morning, she reports feeling severe right lower quadrant abdominal pain with associated back pain and rectal pain that is associated with nausea and vomiting. She has never had symptoms like this before and has no significant medical history. She takes no medications. She is sexually active with multiple partners and uses condoms infrequently. She describes some abnormal-smelling vaginal discharge a few weeks ago that she says she was too busy to see a doctor about. On arrival, temperature is 103°F (39.4°C), blood pressure is 90/48 mmHg, pulse is 124/min, and respirations are 18/min. Physical exam reveals an ill-appearing woman who is in distress but is able to answer questions. Abdominal exam is significant for severe right lower quadrant pain with a palpable, exquisitely tender right-sided pelvic mass. Urine pregnancy test is negative. Which of the following is the most appropriate antibiotic regimen for this patient?