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. 2014 Nov;34(11):1599-605.
doi: 10.1007/s00296-014-2996-0. Epub 2014 Mar 27.

The relationship between mean platelet volume and thrombosis recurrence in patients diagnosed with antiphospholipid syndrome

Joanna Rupa-Matysek  1 , Lidia Gil, Ewelina Wojtasińska, Katarzyna Ciepłuch, Maria Lewandowska, Mieczysław Komarnicki
Affiliations

The relationship between mean platelet volume and thrombosis recurrence in patients diagnosed with antiphospholipid syndrome

Joanna Rupa-Matysek et al. Rheumatol Int. 2014 Nov.

Abstract

Increased mean platelet volume (MPV) is associated with platelet reactivity and is a predictor of cardiovascular risk and unprovoked venous thromboembolism. The aim of our study was to evaluate MPV in patients with confirmed antiphospholipid antibody syndrome (APS) and to identify the correlation between the value of MPV and the recurrence of thrombosis. The studied group consists of 247 patients with a history of thrombosis and/or pregnancy loss (median age 38, range 18-66 years) classified as APS group (n = 70) or APS negative patients (n = 177) according to the updated Sapporo criteria. The control group consisted of 98 healthy subjects. MPV was significantly higher in the group of patients with clinically and laboratory confirmed APS (median 7.85, range 4.73-12.2 fl) in comparison with the controls. It was also higher than in APS negative patients (7.61, range 5.21-12.3 fl). APS patients with triple positivity for antiphospholipid antibodies with respect to Miyakis classification categories had higher MPV values than other APS patients (9.69 ± 1.85 vs. 7.29 ± 1.3 fl, p = 0.001). Recurrent thrombotic episodes were observed in 83 patients, but among the triple positive high-risk patients with APS in 80 % cases (p = 0.0046). In receiver operating characteristic curve analysis, the value of MPV level for thrombosis recurrence prediction in the APS group with sensitivity of 86 % and specificity of 82 % was 7.4 fl. In the multivariate logistic regression model, MPV above 7.4 fl (OR 3.65; 95 % CI 1.38-9.64, p = 0.009) significantly predicts thrombosis recurrence. Our results identify the value of MPV as a prognostic factor of thrombosis recurrence in patients with APS.

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Figures

Fig. 1
Fig. 1
MPV levels in patients with triple Abs positivity and other Miyakis classification categories for APS
Fig. 2
Fig. 2
ROC curve of MPV for thrombosis recurrence prediction in APS group. Area under the curve (AUC) 0.863. CI (95 %) 0.739–0.988. SE 0.064
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