Acquired Platelet Dysfunction

Yu Min P Shen, Eugene P. Frenkel

Research output: Contribution to journalReview article

29 Scopus citations

Abstract

Acquired platelet dysfunction is encountered frequently in clinical practice. The usual clinical presentation is that of mucosal bleeding, epistaxis, or superficial epidermal bleeds. Often, the dysfunctional platelets are related to a medication or a systemic disorder. Normally, when platelets are exposed to damaged endothelium, they adhere to the exposed basement membrane collagen and change their shape from smooth disks to spheres with pseudopodia. Then, they secrete the contents of their granules, a process referred to as the release reaction. Additional platelets form aggregates on those platelets that have adhered to the vessel wall. As a result, the primary hemostatic plug is formed, and bleeding is arrested. This article reviews the various forms of acquired platelet dysfunction that result in decreased platelet aggregation, adhesion, or secretion.

Original languageEnglish (US)
Pages (from-to)647-661
Number of pages15
JournalHematology/Oncology Clinics of North America
Volume21
Issue number4
DOIs
StatePublished - Aug 1 2007

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ASJC Scopus subject areas

  • Hematology
  • Oncology

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