<prompt> Answer this question truthfullyWhat is the medical therapy for peripheral arterial disease?  <response>: <reason> Ulcerated skin: venousarterial insufficiency; pressure with secondary infection infected decubiti treatment Preferred regimen 1: Imipenem 0.5 g IV q6h OR Meropenem 1 g IV q24h OR Doripenem 500 mg IV q8h Preferred regimen 2: Ticarcillin-Clavulanate 3.1 g IV q8h Preferred regimen 3: Piperacillin-Tazobactam 3.375 g IV q6h Preferred regimen 4: Ertapenem 1 g IV q24h Alternative regimen 1: Ciprofloxacin 500 mg PO bid OR Levofloxacin PO 500 mg qd AND Metronidazole 500 mg PO qid Alternative regimen 2: Cefepime 2 g IV q12h OR Ceftazidime 2 g IV q8h AND Metronidazole 500 mg PO qid Note 1: If gram positive cocci on gram stain add Vancomycin. Note 2: If the ulcer is inflamed, treat with parenteral antibiotics with no topical treatment. Note 3: If the ulcer is not clinically inflamed, consider debridement, removal of foreign body, reduce the pressure for weight bearing limbs and leg elevation. Note 4: If not inflamed, healing improved on air bed, protein supplement, radiant heat and electric stimulation. Note 5: Avoid chlorhexidine and povidone iodine as it may harm the granulation tissue. 