This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Pathology
Microscopic examination of the reperfused myocardium is likely to have which of the following findings? 
Select and explain. 
A. Cardiac myocyte swelling, B. Waviness of fibres, C. Contraction band necrosis, D. Neutrophilic infiltration
C: Contraction band necrosis
Answer: C: Contraction band necrosis 
Explanation: Microscopically, irreversibly damaged myocytes after reperfusion develop contraction band necrosis. In this pathologic process, intense eosinophilic bands of hypercontracted sarcomeres are created by an influx of calcium across plasma membranes that heightens actin-myosin interactions. In the absence of ATP, the sarcomeres cannot relax and get stuck in an agonal tetanic state.