| Summary: | Pseudoaneurysms and patch infections are known complications of carotid endarterectomy with patch angioplasty. Although they are rare occurrences, they carry high morbidity and almost uniformly require surgical intervention. Infectious pathogens are often gram-positive bacteria, most commonly Staphylococcus species, whereas gram-negative infections are less frequently observed. We present a case of recurrent pseudoaneurysm in a patient who had a carotid endarterectomy with bovine pericardial patch angioplasty complicated by Pasteurella multocida infection. This case demonstrates the need for recognition and consideration of a broad differential of pathogens in evaluating and treating vascular infections. Keywords: Carotid endarterectomy, Infection, Bovine patch, Angioplasty, Pseudoaneurysm, Complication
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