title: White Blood Cell Count to Mean Platelet Volume Ratio Is a Prognostic Factor in Patients with Non-ST Elevation Acute Coronary Syndrome with or without Metabolic Syndrome.
abstract: OBJECTIVE
  Leukocyte and platelet have been found to be associated with metabolic syndrome (MetS). We aimed to determine the usefulness of a novel marker named white blood cell count to mean platelet volume ratio (WMR) for predicting outcomes of non-ST elevation acute coronary syndrome (NSTE-ACS) with or without MetS.
  
  
  METHODS
  A total of 331 NSTE-ACS individuals (60±12.5 years, 57.4% male) were enrolled and followed for a median of 24 months. MetS was identified using the National Cholesterol Education Program Adult Treatment Panel III criteria.
  
  
  RESULTS
  Patients were divided into two groups: high WMR (WMR≥720) and low WMR (WMR<720). Major adverse cardiovascular events (MACE) and MetS rates were significantly greater in the higher WMR group compared to those in the low WMR group (MACE: 14.3% vs. 25%, p=0.014; MetS: 50.9% vs. 75%, p<0.001). MetS was diagnosed in 62.2% of patients. MACE incidence in patients with or without MetS was comparable (p=0.737). Among MetS individuals, patients in the high WMR group had more MACE than the low WMR group (11.2% vs. 26.5%, p=0.007). However, MACE was comparable among non-MetS individuals (p=0.681). In multivariable Cox regression analysis, hazard ratios (HR) of MACE incidence for high-WMR in MetS individuals was 2.616 (95% confidence interval: 1.282-5.339, p=0.008). However, HR of MACE incidence for high WMR in non-MetS individuals was not significant.
  
  
  CONCLUSIONS
  Among NSTE-ACS patients without revascularization therapy, elevated admission WMR was associated with an increased risk of developing composite MACE in MetS individuals but not in non-MetS patients.
authors.affiliation: Department of Cardiology, Urmia University of Medical Sciences, Urmia, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Dehghani
authors.affiliation: Seyyed-al-Shohada Heart Center, Urmia University of Medical Sciences, Urmia, Iran.
authors.forename: Yousef
authors.initials: Y
authors.lastname: Rezaei
authors.affiliation: School of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
authors.forename: Sanam
authors.initials: S
authors.lastname: Fakour
authors.affiliation: School of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
authors.forename: Nasim
authors.initials: N
authors.lastname: Arjmand
keywords: Acute coronary syndrome; Inflammation; Mean platelet volume; Metabolic syndrome; White blood cell count