Approach to thrombocytopenia

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  • isolated thrombocytopnea otherwise normal complete 🩸 count and smear

    • autoimmune disease? meds? infection?
      • ITP
      • 2ndary immune, medications, infections
  • abnromal complete 🩸 count and/or smear

    • spherocytes: Evan’s synd.
    • schistocytes:
      • disseminated intravascular coagulation
      • hemolytic uremic syndrome/thrombotic thrombocytopenic purpura
      • Mech. circulation support
    • pancytopenia and or blasts:
    • leukoerythroblastic: meylophthisis a.k.a fibrosis
  • TLDR:

  • Step 1 if the count less than 150k, than check if anemia

  • if anemia, do bone marrow

  • else check smear:

    • if Fragmented RBC: MAHA
    • else: survey for 2nd (Drug, Infection, and Congential)
    • then ITP