Acute Myocardial Infarct

Acute Myocardial Infarct •View of superior surfaces of transverse sections of the heart with the anterior surfaces facing towards the left. •These sections were bathed in a tetrazolium reagent solution, a gross marker for succinic dehydrogenase, which stains bright red, and is lost within 1/2 hour after onset of myocardial necrosis. The only remaining viable myocardium is marked by the arrows. The unstained areas represent old scars as well as acute infarcts. Cases untreated with reagent < 12 hours old are not visible grossly. This patient survived for 6 hours in shock. . (Description By:J. Hasson, M.D. ) (Image Contrib. by: UCHC )