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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The predominant isozyme of LDH in cardiac muscle is
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The correct answer is  In myocardial infarction, total LDH activity is increased, while H4 iso-enzyme ( monomer of LDH ) is increased 5-10 times more. The magnitude of the peak value, as well as the area under the graph, will be roughly propoional to the size of the myocardial infarct. Ref: D M Vasudevan 7th edition Page no: 304