Ping Jiang1, Ying Song1, Jing-Jing Xu1, Huan-Huan Wang1, Lin Jiang1, Wei Zhao1, Xue-Yan Zhao1, Jue Chen1, Zhan Gao1, Shu-Bin Qiao1, Yue-Jin Yang1, Run-Lin Gao1, Bo Xu1, Jin-Qing Yuan2. 1. State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. 2. State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. dr_jinqingyuan@sina.com.
Abstract
BACKGROUND: Mean platelet volume (MPV) is a marker of platelet size and activity, and is associated with a poor prognosis of cardiovascular disease. Studies have shown a relationship between diabetes mellitus (DM) and MPV. This study examined the relationship between admission MPV and 2-year cardiac mortality in patients with DM and stable coronary artery disease (SCAD) undergoing elective percutaneous coronary intervention (PCI). METHODS: A total of 1389 patients were enrolled and divided into two groups according to MPV as fol- lows: lower MPV (n = 908, MPV ≤ 10.9 fL) and higher MPV (n = 481, MPV > 10.9 fL). RESULTS: Body mass index, platelet distribution width, MPV/platelet and glycated hemoglobin (HbA1c) levels were significantly higher in the higher MPV group compared with the lower MPV group (all p < 0.05). The platelet count was significantly lower in the higher MPV group compared with the lower MPV group (p < 0.05). MPV was positively associated with HbA1c and fasting plasma glucose levels (r = 0.073 and 0.061, p = 0.007 and 0.023, respectively) in bivariate correlation analysis. The 2-year cardiac mortality rate was 0.7%, and was significantly lower in the lower MPV group than in the higher MPV group in Kaplan-Meier analysis (p = 0.019). Receiver operating characteristic analysis showed a good diagnostic value for MPV at predicting long-term cardiac mortality (area under the curve: 0.735, 95% confidence interval [CI]: 0.590-0.880, p = 0.01). Elevated MPV was a significant risk factor for 2-year cardiac mortality (hazard ratio: 2.091, 95% CI: 1.075-4.070, p = 0.030) in multivariable Cox regression analysis. CONCLUSIONS: Mean platelet volume is a strong, independent prognostic factor in PCI-treated patients with DM and SCAD.
BACKGROUND: Mean platelet volume (MPV) is a marker of platelet size and activity, and is associated with a poor prognosis of cardiovascular disease. Studies have shown a relationship between diabetes mellitus (DM) and MPV. This study examined the relationship between admission MPV and 2-year cardiac mortality in patients with DM and stable coronary artery disease (SCAD) undergoing elective percutaneous coronary intervention (PCI). METHODS: A total of 1389 patients were enrolled and divided into two groups according to MPV as fol- lows: lower MPV (n = 908, MPV ≤ 10.9 fL) and higher MPV (n = 481, MPV > 10.9 fL). RESULTS: Body mass index, platelet distribution width, MPV/platelet and glycated hemoglobin (HbA1c) levels were significantly higher in the higher MPV group compared with the lower MPV group (all p < 0.05). The platelet count was significantly lower in the higher MPV group compared with the lower MPV group (p < 0.05). MPV was positively associated with HbA1c and fasting plasma glucose levels (r = 0.073 and 0.061, p = 0.007 and 0.023, respectively) in bivariate correlation analysis. The 2-year cardiac mortality rate was 0.7%, and was significantly lower in the lower MPV group than in the higher MPV group in Kaplan-Meier analysis (p = 0.019). Receiver operating characteristic analysis showed a good diagnostic value for MPV at predicting long-term cardiac mortality (area under the curve: 0.735, 95% confidence interval [CI]: 0.590-0.880, p = 0.01). Elevated MPV was a significant risk factor for 2-year cardiac mortality (hazard ratio: 2.091, 95% CI: 1.075-4.070, p = 0.030) in multivariable Cox regression analysis. CONCLUSIONS: Mean platelet volume is a strong, independent prognostic factor in PCI-treated patients with DM and SCAD.
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