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Open Access 01-12-2018 | Research article

Platelet activation and aggregation after aneurysmal subarachnoid hemorrhage

Published in: BMC Neurology | Issue 1/2018

Abstract

Background

Endovascular techniques have proven beneficial in the treatment of aneurysmal subarachnoid hemorrhage (aSAH), but with high risk of arterial clotting, emboli and dissection. Platelet activation and alterations in hemostasis may contribute to these complications. We investigated platelet activation and aggregation pathways in aSAH patients who underwent endovascular treatment.

Methods

Two blood samples were taken, in the early days after bleeding and during the period at risk of vasospasm. We studied platelet activation through the expression of GpIIbIIIa and P-selectin as well as aggregation rate in the presence of agonists. Platelets from aSAH patients were compared with those from orthopedic postoperative patients (POSTOP).

Results

Platelets in aSAH were initially spontaneously activated and remained so over time. aSAH platelets were further activated with rapid aggregation in the presence of agonists, particularly ADP, with behavior comparable to POSTOP platelets.

Conclusions

aSAH platelets showed prolonged increases in activation and aggregation. Therapies targeting the ADP pathway might reduce the risk of clotting and ischemic events in this context among patients requiring multiple endovascular procedures.

Trial registration

Not applicable.

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Title: Platelet activation and aggregation after aneurysmal subarachnoid hemorrhage
Publication date: 01-12-2018
Published in: BMC Neurology / Issue 1/2018
Electronic ISSN: 1471-2377
DOI: https://doi.org/10.1186/s12883-018-1062-z

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Platelet activation and aggregation after aneurysmal subarachnoid hemorrhage

Abstract

Background

Methods

Results

Conclusions

Trial registration

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

Trial registration

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