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Microfluidics in Assessing Platelet Function
06:47

Microfluidics in Assessing Platelet Function

Published on: November 8, 2024

Platelet function testing in practice: a case study

Ehtisham Mahmud1, Lawrence Ang

  • 1University of California, San Diego Medical Center, San Diego, CA, USA.

Reviews in Cardiovascular Medicine
|November 15, 2011
PubMed

Insights

Dual antiplatelet therapy reduces ischemic events after stenting, but residual risk remains. Point-of-care testing can identify patients with high platelet reactivity, a factor in stent thrombosis.

Area of Science:

  • Cardiovascular Medicine
  • Pharmacology
  • Hematology

Background:

  • Dual antiplatelet therapy (DAPT) with aspirin and a thienopyridine is standard after percutaneous coronary intervention (PCI) to reduce ischemic events.
  • Despite DAPT, a residual risk of ischemic events persists, partly due to enhanced platelet reactivity.
  • Variability in patient response to thienopyridines like clopidogrel is influenced by genetic, pharmacologic, and clinical factors.

Observation:

  • Point-of-care platelet function testing allows for assessment of on-treatment platelet reactivity.
  • These tests can identify patients who are poor responders to thienopyridine therapy.
  • Two cases of stent thrombosis were investigated using the VerifyNow P2Y12 Assay®.

Findings:

  • The VerifyNow P2Y12 Assay® was used to determine on-treatment platelet reactivity in patients experiencing stent thrombosis.
  • This assay helped identify potential causes for the thrombotic events by assessing platelet function.
  • Enhanced platelet reactivity was identified as a potential contributor to stent thrombosis in these cases.

Implications:

  • Point-of-care testing can guide antiplatelet therapy adjustments in patients at high risk for thrombotic events.
  • Identifying poor responders to thienopyridines may help personalize treatment strategies to mitigate residual ischemic risk.
  • These findings highlight the clinical utility of rapid platelet function assays in managing patients undergoing PCI.

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