Snapshot A 58-year-old man develops fever, tachycardia, and worsening chest pain 2 days after undergoing a coronary artery bypass surgery for coronary artery disease. On examination, his sternotomy wound is draining purulent fluid. A chest radiograph demonstrates mediastinal widening and a CT scan demonstrates mediastinal gas. Introduction Clinical definition login to view 6 more bullets Epidemiology Incidence login to view 2 more bullets Risk factors login to view 1 more bullet Etiology Pathophysiology login to view 51 more bullets Presentation Symptoms login to view 3 more bullets Physical exam login to view 3 more bullets Imaging Radiographs login to view 4 more bullets Computerized tomography (CT) login to view 4 more bullets Differential Acute pericarditis login to view 2 more bullets Cardiac tamponade login to view 2 more bullets Treatment Operative login to view 2 more bullets Complications Death Prognosis Survival with treatment login to view 2 more bullets