Monocyte Distribution Width Predicts Sepsis, Respiratory Failure, and Death in COVID-19

Area of Science:

• Critical Care Medicine
• Infectious Diseases
• Laboratory Hematology

Background:

• Sepsis is a major cause of hospital mortality, necessitating early detection for improved patient outcomes.
• COVID-19 infection presents unique challenges in sepsis identification and management.
• Monocyte distribution width (MDW) is explored as a potential cytomarker for sepsis detection.

Purpose of the Study:

• To investigate the utility of Monocyte Distribution Width (MDW) in detecting sepsis among COVID-19 patients.
• To assess the correlation of MDW with disease severity, clinical outcomes, and mortality in COVID-19.
• To compare MDW's performance against established inflammatory markers.

Main Methods:

• Retrospective, single-center cohort study of adult COVID-19 patients.
• Evaluation of Monocyte Distribution Width (MDW) as a predictive biomarker for sepsis.
• Comparison of MDW with procalcitonin, D-dimer, ferritin, and lactic acid levels.

Main Results:

• MDW significantly predicted sepsis in COVID-19 patients (25.50 ± 5.93 vs. 23.13 ± 4.46, p < 0.01).
• MDW correlated with respiratory failure, hypoxia, and death, with a cut-off of 24.9 indicating fatal outcomes (AUC 0.69, sensitivity 83%, specificity 71%).
• MDW showed a significant association with COVID-19 outcomes (OR = 3.52, p < 0.001) but did not correlate with other inflammatory markers.

Conclusions:

• Monocyte Distribution Width (MDW) is a reliable cytomarker for sepsis detection in COVID-19.
• Elevated MDW values are linked to increased risk of respiratory failure, death, and overall mortality.
• MDW offers a valuable, easily accessible tool for emergency room triage of COVID-19 patients.