Three days after the onset of myocardial infarction, which enzyme level has the best predictive value____________?

Correct answer: B. Serum LDH

  • A. Serum CPK
  • B. Serum LDH
  • C. Serum SGOT
  • D. Serum SGPT

Explanation

LDH remains elevated for several days after myocardial infarction and reaches its peak around the second to third day, whereas CPK may already be declining. This makes LDH more useful when the patient presents late.

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