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Updated: Mar 8, 2026

Closure of a Patent Foramen Ovale PFO: An Intervention Sequence
Published on: December 23, 2022
Relationship between mean platelet volume and ischemic stroke in patients with patent foramen ovale
Nermin Bayar1, Selçuk Küçükseymen, Zehra Erkal
1Department of Cardiology, Antalya Training and Research Hospital, Antalya, Turkey. dr.nermin@mynet.com.
Objective:
Patent foramen ovale (PFO) is commonly encountered in patients with cryptogenic stroke. Mean platelet volume (MPV), an indicator of platelet reactivity, has been reported in recent trials to be higher in patients with PFO than in normal population. The aim of this study was to investigate whether there is a difference in MPV between patients with PFO and stroke or transient ischemic attack (TIA) and that of patients with asymptomatic PFO.
Methods:
Patients with PFO who were younger than 55 years of age were enrolled in this retrospective study. Hemogram parameters of patients with ischemic stroke or TIA (symptomatic group) were obtained during hospitalization once they had stable clinical status.
Results:
Total of 108 patients, 51 of whom were symptomatic, were included in the study. MPV was determined to be higher in symptomatic group compared with asymptomatic group (median 10.0 fl [25th-75th percentile: 9.0-11.0] vs median 8.56 fl [25th-75th percentile: 8.0-9.0], respectively; p<0.001,. Cut-off point of 9.0 fl for MPV had 70% sensitivity and 86% specificity in predicting symptomatic PFO patients.
Conclusion:
MPV is higher in symptomatic than in asymptomatic PFO patients. This finding may be a subsidiary risk factor to identify patients with PFO and high risk of cardioembolic stroke.
Insights
Mean platelet volume (MPV) is higher in patients with patent foramen ovale (PFO) who experience stroke or TIA. This finding may help identify PFO patients at high risk for cardioembolic stroke.
Area of Science:
- Cardiology
- Neurology
- Hematology
Background:
- Patent foramen ovale (PFO) is frequently observed in cryptogenic stroke patients.
- Mean platelet volume (MPV), a marker of platelet reactivity, is elevated in individuals with PFO compared to the general population.
Purpose of the Study:
- To determine if MPV differs between patients with PFO and stroke/TIA (symptomatic) and those with asymptomatic PFO.
- To evaluate MPV as a potential indicator for symptomatic PFO.
Main Methods:
- Retrospective analysis of 108 patients under 55 with PFO.
- Comparison of hemogram parameters, specifically MPV, between symptomatic (stroke/TIA) and asymptomatic PFO groups.
Main Results:
- MPV was significantly higher in the symptomatic PFO group (median 10.0 fl) versus the asymptomatic group (median 8.56 fl).
- An MPV cut-off of 9.0 fl demonstrated 70% sensitivity and 86% specificity for identifying symptomatic PFO.
Conclusions:
- Elevated MPV is associated with symptomatic PFO.
- MPV may serve as a supplementary risk factor for identifying PFO patients at elevated risk of cardioembolic stroke.
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