Difference between revisions of "Thrombocytopenia and platelet dysfunction"

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==Definition==
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==Definition of thrombocytopenia==
Platelet count < 150 × 10<sup>9</sup>/L.
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Platelet count less than 150 x 10<sup>9</sup>/L or less than the lower limit of normal as defined by a local laboratory.
  
 
==Evaluation==
 
==Evaluation==
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*Assessment for liver disease, hepatomegaly, fatty liver, splenomegaly
 
*Assessment for liver disease, hepatomegaly, fatty liver, splenomegaly
 
*[[Peripheral smear findings|Peripheral smear]], platelet clumps
 
*[[Peripheral smear findings|Peripheral smear]], platelet clumps
*Clinical history (bleeding, temporality, recent infections), TTP/HUS
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*Clinical history (bleeding, temporality, recent infections), [[Acquired thrombotic thrombocytopenic purpura|TTP]]/[[Atypical hemolytic uremic syndrome|aHUS]]
*Thrombotic history (e.g. heparin/HIT)
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*Thrombotic history (e.g., heparin/[[Heparin-induced thrombocytopenia (HIT)|HIT]])
 
*Lifestyle factors (e.g. alcohol)
 
*Lifestyle factors (e.g. alcohol)
 
*Medications  
 
*Medications  
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*Pregnancy/gestational thrombocytopenia
 
*Pregnancy/gestational thrombocytopenia
 
*ITP
 
*ITP
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==Relevant diagnoses==
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*[[Atypical hemolytic uremic syndrome]]
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*[[Glanzmann thrombasthenia]]
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*[[Immune thrombocytopenia (ITP)]]
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*[[Heparin-induced thrombocytopenia (HIT)]]
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*[[Thrombocytopenia in liver disease]]
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*[[Acquired thrombotic thrombocytopenic purpura]]
  
 
[[Category:Hematology reference pages]]
 
[[Category:Hematology reference pages]]

Latest revision as of 16:23, 20 June 2024

  • We have moved How I Treat articles to a dedicated page.


Definition of thrombocytopenia

Platelet count less than 150 x 109/L or less than the lower limit of normal as defined by a local laboratory.

Evaluation

May consist of:

  • CBC with differential
  • Comprehensive metabolic panel, including liver function tests (LFTs)
  • Vitamin B12
  • Folate
  • Assessment for liver disease, hepatomegaly, fatty liver, splenomegaly
  • Peripheral smear, platelet clumps
  • Clinical history (bleeding, temporality, recent infections), TTP/aHUS
  • Thrombotic history (e.g., heparin/HIT)
  • Lifestyle factors (e.g. alcohol)
  • Medications
  • Hepatitis serologies
  • HIV
  • ANA, lupus
  • Pseudothrombocytopenia, EDTA-induced clumping (draw sample in blue top citrate tube)
  • Pregnancy/gestational thrombocytopenia
  • ITP

Relevant diagnoses