Source Title:
Clinical Chemistry and Laboratory Medicine (CCLM)
|
Volume/Issue:
Volume 54: Issue 7

Platelet aggregation in response to ADP is highly variable in normal donors and patients on anti-platelet medication

Eimear Dunnehttp://orcid.org/0000-0001-9862-1398, Karl Egan, Siobhán McFadden, David Foley 3 , and Dermot Kenny
  • 1 Cardiovascular Biology and Clinical Research Centre, Royal College of Surgeons in Ireland, Dublin, Ireland
  • 2 Biomedical Diagnostics Institute, Dublin City University, Dublin, Ireland
  • 3 Cardiology, Beaumont Hospital, Dublin, Ireland
Eimear DunneORCID iD: http://orcid.org/0000-0001-9862-1398, Karl Egan, Siobhán McFadden, David Foley and Dermot Kenny
DOI:
https://doi.org/10.1515/cclm-2015-0802
|
Published online:
12 Nov 2015

Abstract

Background: P2Y12 inhibitors are indicated in patients following percutaneous coronary intervention. Several studies have demonstrated that high on treatment platelet reactivity is correlated with outcomes yet prospective studies of guided therapy have failed to show benefit. There is a paucity of studies on the platelet aggregation response to ADP before P2Y12 therapy is started. The aim of this study was to characterize platelet responses to 20 μM ADP by light transmission aggregometry (LTA) in a homogenous population.

Methods: Platelet aggregation was assessed in 201 patients on dual antiplatelet therapy, 98 patients on aspirin alone and 47 normal, healthy volunteers free from anti-platelet medication.

Results: Consensus guidelines suggest that a platelet aggregation response in response to the agonist ADP of <57% is an adequate therapeutic response to P2Y12 inhibition. Seven healthy donors and 38 patients taking aspirin only had aggregation responses below 57%.

Conclusions: The results of our study demonstrate that 15% of normal donors and 38% of patients taking aspirin only would be classified as having a therapeutic response to P2Y12 inhibition using current guidelines.

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Article information

Corresponding author: Dermot Kenny, Cardiovascular Biology and Clinical Research Centre, Royal College of Surgeons in Ireland, 123 St Stephen’s Green, Dublin 2, Ireland, Phone: +353 (1) 4022358, Fax: +353 (1) 4022453, E-mail: ; and Biomedical Diagnostics Institute, Dublin City University, Dublin, Ireland

Received:
2015-08-19
Accepted:
2015-10-07
Published Online:
2015-11-12
Published in Print:
2016-07-01

Citation Information: 
Clinical Chemistry and Laboratory Medicine (CCLM), Volume 54, Issue 7, Pages 1269–1273, eISSN 1437-4331, ISSN 1434-6621, DOI: https://doi.org/10.1515/cclm-2015-0802.

©2016 by De Gruyter.

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Journal + Issues

Clinical Chemistry and Laboratory Medicine (CCLM)

Online ISSN:
1437-4331
First published:
01 Jan 1963
Language:
English
Publisher:
De Gruyter

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