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Increased Mean Platelet Volume is Associated with Higher In-Hospital Mortality Rate in Patients with Acute Myocardial Infarction by Xiaoxiao Liu, Shuya Wang, Ling Yuan, Fang Chen, Lizhu Zhang, Xinhe Ye, Zhijun Han, Chengjian Yang

Background: To evaluate the prognostic value of mean platelet volume (MPV) on admission for the in-hospital mortality in patients with acute myocardial infarction (AMI).
Methods: Medical records of 567 AMI patients were retrospectively reviewed, and their baseline clinical and laboratory characteristics were extracted. The relationships between the MPV and both clinical and laboratory characteristics were analyzed. The predictive value of the MPV for in-hospital death was estimated using receiver operating characteristic (ROC) curve analysis and a multivariate logistic regression model.
Results: The area under the curve (AUC) of MPV for in-hospital death was 0.77 (95% CI: 0.72 - 0.82). At a threshold of 12.5 fL, the sensitivity and specificity of MPV for in-hospital death were 0.58 (95% confidence interval (CI): 0.48 - 0.67) and 0.88 (95% CI: 0.84 - 0.91), respectively. In a multivariable logistic regression model, MPV > 12.5 fL was an independent risk factor for in-hospital mortality, with an odds ratio (OR) of 5.35 (95% CI, 3.03 - 9.45).
Conclusions: Increased MPV is associated with higher in-hospital mortality rate in patients with AMI.

DOI: 10.7754/Clin.Lab.2016.160627