Mean platelet volume is associated with culprit lesion severity and cardiac events in acute coronary syndromes without ST elevation

Abdullah Dogan, Fatih Aksoy, Atilla Icli, Akif Arslan, Ercan Varol, Bayram Ali Uysal, Mehmet Ozaydin, Dogan Erdogan
Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis 2012, 23 (4): 324-30
We investigated the association of mean platelet volume (MPV) with culprit lesion severity and major cardiac outcomes (MCOs) in patients with acute coronary syndrome (ACS) with non-ST elevation (NSTE). This study included 344 patients with NSTE-ACS who had significant coronary stenosis at least 50%. They were divided into high MPV group (n = 109, upper tertile >9.9 fl) and low MPV group (n = 235, lower and mid tertile ≤ 9.9 fl) according to MPV values on admission. They were followed up for MCOs during 12 months. MCO consisted of the composite end-point of cardiac death, myocardial infarction (MI), recurrent angina or hospitalization. High MPV was independently associated with NSTE-MI [odds ratio (OR) 4.24, 95% confidence interval (CI) 2.52-7.15, P = 0.001] and severe culprit stenosis (≥ 80%) (OR 4.05, 95% CI 2.39-6.83, P = 0.001). MPV of 9.9 fl was predictive of severe culprit stenosis with a sensitivity of 73% and specificity of 77% (P < 0.001). At 12 months, MCO rate was higher in high MPV group than low MPV group (39 vs. 26%; P = 0.016). This difference resulted from death (6.4 vs. 2.1; P = 0.06) and recurrent angina (16.5 vs. 8.9%; P = 0.045). The MCO-free survival was worse in patients with high MPV than those with low MPV (61 vs. 74%; P = 0.01). In Cox regression analysis, high MPV remained an independent predictor of MCO (hazard ratio 1.52, 95% CI 1.01-2.29, P = 0.04) after adjusting for baseline characteristics. Elevated MPV was independently associated with NSTE-MI presentation and severity of culprit stenosis in NSTE-ACS patients. Moreover, MPV greater than 9.9 fl was predictive of a 12-month MCO.

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