Alsuwaidi, LailaAl Heialy, SabaHan, AaronHachim, Mahmood Yaseen2022-07-192022-07-192022204-2022.08https://repository.mbru.ac.ae/handle/1/960Background: The severe acute respiratory syndrome coronavirus (SARS-CoV-2) is a highly transmittable virus which causes the novel coronavirus disease (COVID-19). Monocyte distribution width (MDW) is an in-vitro hematological parameter which describes the changes in monocyte size distribution and can indicate progression from localized infection to systemic infection. In this study we evaluated the correlation between the laboratory parameters and available clinical data in diferent quartiles of MDW to predict the progression and severity of COVID-19 infection. Methods: A retrospective analysis of clinical data collected in the Emergency Department of Rashid Hospital Trauma Center-DHA from adult individuals tested for SARS-CoV-2 between January and June 2020. The patients (n=2454) were assigned into quartiles based on their MDW value on admission. The four groups were analyzed to determine if MDW was an indicator to identify patients who are at increased risk for progression to sepsis. Results: Our data showed a signifcant positive correlation between MDW and various laboratory parameters associated with SARS-CoV-2 infection. The study also revealed that MDW≥24.685 has a strong correlation with poor prognosis of COVID-19. Conclusions: Monitoring of monocytes provides a window into the systemic infammation caused by infection and can aid in evaluating the progression and severity of COVID-19 infection.COVID-19SARS-CoV-2MDWMonocyteSepsis