• Omer Araz, Fadime Sultan Albez, Elif Yilmazel Ucar, Bugra Kerget, Nafiye Yılmaz, and Metin Akgun.
• Department of Pulmonary Diseases, Ataturk University School of Medicine, 25240, Erzurum, Turkey. dromeraraz@gmail.com.
• Lung. 2017 Aug 1; 195 (4): 497-502.

PurposeRecurrence is a major clinical problem in patients with pulmonary embolism and can affect mortality. The decision to discontinue treatment is important for recurrence and is based on patients' clinical features as well as certain blood parameters. Our aim in this study was to evaluate whether mean platelet volume (MPV) and platelet distribution width (PDW) have utility as new predictive parameters for recurrence and mortality in pulmonary embolism.Materials And MethodsA total of 440 patients with pulmonary embolism underwent computed tomography, Doppler ultrasonography, and echocardiography before and at the conclusion of treatment. Thrombocyte count, MPV, PDW, and D-dimer parameters were also evaluated at the same time points.ResultsMPV and PDW were significantly higher in deceased patients (8.8 ± 1.2 fl and 17.4 ± 0.8) compared to surviving patients (7.7 ± 0.9 fl and 17 ± 0.9) (p < 0.0001). Initial MPV and PDW were also significantly higher in patients with recurrence (8.4 ± 0.7 vs 7.6 ± 0.8 fl, p < 0.0001 and 17.3 ± 0.8 vs 16.9 ± 0.9, p = 0.002, respectively) than in patients without recurrence. At the end of treatment, MPV was still higher in patients with recurrence compared to patients without recurrence (8.7 ± 0.5 and 7.5 ± 0.7 fl, respectively, p < 0.0001). MPV values over 8.05 fl at the end of treatment predicted recurrence with 91% sensitivity and 77% specificity.ConclusionMPV seems to be an indicator of recurrence in pulmonary embolism and may have utility in the prediction of recurrence. Elevated MPV can also be used to predict mortality in pulmonary embolism.

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