Peripheral vascular disease: diagnosis and treatment.

(M2.CV.17.4690) A 65-year-old man with a past medical history of anterior myocardial infarction, peripheral arterial disease, and known patent foramen ovale presents to the emergency department after being found down from a fall on the sidewalk in the middle of winter. He states that his right leg feels numb and painful at the same time. He insists that he did not slip on ice or snow, yet fell suddenly. He is taking aspirin, simvastatin, and cilostazol. Vital signs show T 98.0 F, BP 100/60, HR 100, RR 18. His pulse is irregularly irregular. His right leg appears pale with no dorsalis pedis and posterior tibial pulses compared to 2+ pulses on the left. He cannot discern soft or sharp touch in his right leg. Which intervention will most likely improve the viability of this patient's right leg?

(M1.HE.13.18) A 58-year-old Caucasian male with a history of peripheral vascular disease is admitted to the hospital with a painful, pulseless foot. He is prescribed antiplatelet and anticoagulant drugs. Which of the following matches a drug with its correct characteristic?

(OBQ09.92) A 55-year-old male with a history of diabetes mellitus presents with left leg pain localized to his posterior knee and calf. The pain is worse with prolonged walking and resolves when he rests and remains standing upright. He has a history of chronic low back pain, prior cardiac stenting, and smokes 1 pack of cigarettes daily for the last twenty years. Physical exam is remarkable for 1+ patellar reflexes and an ABI of 0.8. A radiograph of his lumbar spine is shown in Figure A. T2-weighted sagittal and axial MRI images are shown in Figure B and C respectively. A radiograph of his left knee is shown in Figure D. What is the most likely cause his leg pain?