Platelet-to-lymphocyte ratio and mean platelet volume-to-platelet count ratio for predicting mortality in critical COVID-19 patients

Introduction: Defining the markers that can be used in clinical practice for predicting mortality of critical patients will cautionary taking necessary measures high-risk cases. Although there are a large number studies conducted during pandemic, no marker to predict prognosis intensive care unit (ICU) with COVID-19 has yet been defined. Platelet indices easily evaluated complete blood count (CBC) analysis, one most accessible tests worldwide. This study aimed evaluate role platelet such as mean volume (MPV), distribution width (PDW), plateletcrit (PCT), platelet-to-lymphocyte ratio (PLR), and MPV-to-platelet (MPV/PLT) ICU COVID-19. 
 Material Method: single-center, retrospective, cross-sectional included 201 over 18 years age who were hospitalized between August 2020 February 2021. Patients divided into two groups survivors non-survivors. The relationship MPV, PDW, PCT, PLR, MPV/PLT parameters at admission was investigated. Results: There significant difference survivor non-survivor terms count, PDW. comparison ratios revealed higher PLR group than (p