Knowledge Check

What should we follow in a patient with polycythemia: Hb or Hct?

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Hct is ideal because it is limiting in terms of oxygen delivery

How do you correct for an artificially high aPTT in a patient with severe polycythemia?

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Adjust the amount of citrate in the blue top tube

Why are uric acid and LDH increased in some patients with polycythemia?

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Increased cell turnover

What is the target Hct in a patient with polycythemia treated with phlebotomy?

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< 45%

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