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Hematologic adverse effects of clopidogrel

Saravanan Balamuthusamy1, Rohit Arora

  • 1Department of Medicine, Chicago Medical School at Rosalind Franklin University, Chicago, IL 60064, USA. svijay_bala@yahoo.com

American Journal of Therapeutics
|February 17, 2007
PubMed

Insights

Clopidogrel, a common antiplatelet drug, can cause rare but serious hematologic issues like thrombotic thrombocytopenia purpura. Close patient monitoring is crucial for early detection and life-saving treatment of these adverse effects.

Area of Science:

  • Pharmacology
  • Hematology
  • Clinical Medicine

Background:

  • Clopidogrel is a widely used antiplatelet medication for cardiovascular and cerebrovascular diseases.
  • Hematologic complications are a significant concern with antiplatelet therapies.
  • Clopidogrel is generally considered safer than ticlopidine regarding hematologic adverse effects.

Purpose of the Study:

  • To review and synthesize reported hematologic adverse effects of clopidogrel.
  • To highlight the manifestations and management strategies for these rare complications.
  • To emphasize the importance of monitoring patients on clopidogrel therapy.

Main Methods:

  • Literature search conducted using Medline, Pubmed, and EMBASE databases.
  • Inclusion of studies reporting hematologic adverse effects of clopidogrel.
  • Focus on manifestations and management of identified adverse events.

Main Results:

  • Thrombotic thrombocytopenia purpura (TTP) is the most frequent hematologic adverse effect.
  • Other rare hematologic adverse effects include neutropenia, acquired hemophilia, and isolated thrombocytopenia.
  • TTP can occur with hemolytic uremic syndrome.
  • Monitoring is especially important in the first 2-3 months of therapy.

Conclusions:

  • Clopidogrel, while safer than ticlopidine, can cause serious hematologic adverse effects.
  • Early recognition and prompt management of these effects are critical for patient outcomes.
  • Vigilant monitoring of patients on clopidogrel is essential.

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