Year Presents Emergency Assignment Help: How to Answer This Question

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Original Question

A 38-year-old man presents to the emergency department with a painful right forefoot, which is worse at night. The patient has been smoking 25-30 cigarettes daily for the last 19 years. His medical history is unremarkable and his family history is noncontributory. Physical examination confirms a sinus cardiac rhythm with a cold, pulseless right foot with ulceration of the distal phalanges. Femoral and popliteal pulses are present, but dorsalis pedis pulses are absent bilaterally. Which of the following is the best initial investigation for this patient’s condition? A. Anti-centromere antibody B. Cytoplasmic antineutrophil cytoplasmic antibodies O C. Double-stranded DNA antibodies O D. Arterial Doppler ultrasound O E. Coagulation profile

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