A 78 yo female with a history of Type 2 DM and stroke was admitted to the hospital 5 days prior for evaluation of an ulcer on her left heel. She received proper surgical management for the ulcer and awaits placement in the nursing home. Late last night, she developed acute shortness of breath and was transferred to the medical-respiratory unit for intubation. Chest x-ray reveals a right lower lobe consolidation. She has NKDA and her SCr is 1.1 mg/dL. Which of the following regimens would be most appropriate?
Moxifloxacin [Avelox] 400-mg IV daily
Clindamycin [Cleocin] 600-mg IV q 8h
Ceftriaxone [Rocephin] 1-g IV QD plus azithromycin 500 mg IV daily
Piperacillin/tazobactam [Zosyn] 4.5 g IV q 8 h