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Microfluidics in Assessing Platelet Function
Published on: November 8, 2024
Role of mean platelet volume in triagging acute coronary syndromes
Mehmet Birhan Yilmaz1, Gokhan Cihan, Yesim Guray
1Department of Cardiology, Cumhuriyet University, School of Medicine, Sivas, Turkey. cardioceptor@gmail.com
Insights
Higher mean platelet volume (MPV) in patients with non-ST segment elevation acute coronary syndromes (NSTE ACS) indicates increased risk for myocardial infarction and ischemic complications. This simple measure reflects platelet function and aids in risk stratification.
Area of Science:
- Cardiology
- Hematology
- Internal Medicine
Background:
- Acute coronary syndromes (ACS) involve plaque rupture and platelet activation, with increasing incidence.
- Platelet activation is central to ACS pathophysiology, making anti-platelet therapies crucial.
- Mean platelet volume (MPV) is a simple, accurate marker of platelet functional status.
Purpose of the Study:
- To prospectively evaluate the diagnostic and prognostic value of MPV in patients hospitalized with ACS.
- To assess the relationship between MPV and the development of non-ST segment elevation myocardial infarction (NSTEMI) and ischemic complications.
Main Methods:
- 216 consecutive patients with non-ST segment elevation ACS (NSTE ACS) were enrolled within 24 hours of chest pain.
- A control group of 120 patients with stable coronary heart disease (CHD) was matched for age and sex.
- Patients were categorized into unstable angina (USAP) and NSTEMI groups.
Main Results:
- MPV was significantly higher in NSTEMI (10.4 ± 0.6 fL) and USAP (10 ± 0.7 fL) groups compared to stable CHD (8.9 ± 0.7 fL).
- Patients experiencing ischemic attacks within 24 hours of hospitalization had significantly higher MPV.
- MPV, platelet count, and ST segment depression at admission were independent predictors of NSTEMI development in NSTE ACS patients.
Conclusions:
- Elevated MPV in NSTE ACS patients is associated with a higher risk of developing NSTEMI.
- Higher MPV also predicts an increased likelihood of ischemic complications in NSTE ACS.
- MPV serves as a valuable, albeit overlapping, indicator for risk stratification in NSTE ACS.
Background:
Acute coronary syndromes, characterized by the rupture of unstable plaque and the subsequent thrombotic process involving platelets, have been increasing in relative frequency. The central role of platelet activation has long been noticed in this pathophysiology; hence, many therapies have been directed against it. In this study, we have aimed to search prospectively the value of mean platelet volume (MPV), which is a simple and accurate measure of the functional status of platelets, in patients hospitalized with diagnosis of acute coronary syndromes (ACS).
Materials And Methods:
A total of 216 consecutive patients (156 male, 60 female) hospitalized with the diagnosis of non-ST segment elevation (NSTE) ACS within the first 24 h of their chest pain were enrolled. One hundred and twenty patients, matched according to sex and age, with stable coronary heart disease (CHD) (85 male, 35 female) were enrolled as a control group. Patients were classified into two group: those with unstable angina (USAP, n = 105) and those with non-ST segment elevation myocardial infarction (NSTEMI, n = 111).
Results:
MPVs were 10.4 +/- 0.6 fL, 10 +/- 0.7 fL, 8.9 +/- 0.7 fL consecutively for NSTEMI, USAP and stable CHD with significant differences. Patients with ischemic attacks in the first day of hospitalization accompanied by >0.05 mV ST segment shift had significantly higher MPV compared to those without such attacks (P = 0.001). Multivariable logistic regression analysis yielded that MPV (P = 0.016), platelet count (P < 0.001), and the presence of >0.05 mV ST segment depression at admission (P = 0.002) were independent predictors of development of NSTEMI in patients presenting with NSTE ACS.
Conclusion:
In patients presenting with NSTE ACS, higher MPV, though there are overlaps among subgroups, indicates not only more risk of having NSTEMI but also ischemic complications.
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