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Related Experiment Video

Updated: Dec 19, 2025

Microfluidics in Assessing Platelet Function
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Platelet Function Testing in Neurovascular Procedures: Tool or Gimmick?

Nicholas K Cheung1,2, Michael W Carr1, Udayan Ray3,2

  • 1Department of Medical Imaging, Neuroradiology, Royal Hobart Hospital, Hobart, Tasmania, Australia.

Interventional Neurology
|June 9, 2020
PubMed
Summary
This summary is machine-generated.

Platelet function tests (PFT) identify patients resistant to clopidogrel before neurovascular stenting (NVS). Switching non-responders to ticagrelor improved neurological outcomes and reduced thromboembolic events, enhancing procedural safety.

Keywords:
CoilingIntracranial aneurysmsNeurovascular stentingPlatelet function testingPlatelet inhibition

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Area of Science:

  • Cardiovascular Medicine
  • Neurology
  • Interventional Cardiology

Background:

  • Neurovascular stenting (NVS) procedures require platelet inhibitors to prevent thromboembolic complications.
  • Significant inter-individual variability exists in platelet inhibition.
  • The utility of platelet function tests (PFT) in assessing inhibition remains debated.

Purpose of the Study:

  • To compare thromboembolic complication rates in NVS patients with and without PFT.
  • To assess clinical neurological outcomes using the modified Rankin Scale (mRS).

Main Methods:

  • 117 patients undergoing elective NVS received aspirin and clopidogrel.
  • 65 patients underwent PFT for clopidogrel resistance assessment.
  • Patients with resistance were switched to ticagrelor; outcomes were compared to a non-PFT cohort.

Main Results:

  • 35% of PFT patients showed inadequate clopidogrel inhibition and were switched to ticagrelor.
  • The PFT cohort experienced significantly fewer neurological deficits (0% vs. 12%; p=0.009).
  • Thromboembolic events were lower in the PFT cohort (3% vs. 12%; p>0.05).

Conclusions:

  • PFT can identify patients with clopidogrel resistance before NVS.
  • Converting non-responders to alternative inhibitors may improve neurological outcomes.
  • PFT may enhance NVS procedural safety and clinical outcomes.