Abstract
Abstract BACKGROUND: Sepsis poses a significant threat to adult patients admitted to intensive care units (ICUs), contributing to substantial morbidity and mortality. Neutrophil CD64 (nCD64) expression has been linked to inflammatory responses during infection or tissue injury, suggesting its potential as a predictive marker for sepsis. MATERIALS AND METHODS: We conducted a prospective analytical study over 2 years at a tertiary care hospital, enrolling 91 sepsis cases from the adult ICU. Alongside routine laboratory parameters, including complete blood count, prothrombin time, activated partial thromboplastin time, fibrinogen, C-reactive protein, and procalcitonin, the expression of nCD64 was analyzed using a Beckman Coulter Navios flow cytometer. Median fluorescence intensity (MFI) was calculated for these cases. Statistical analysis was performed using SPSS version 25.0 software, with a significance threshold of P < 0.05. RESULTS: MFI scores demonstrated a notable increase in diagnosed sepsis cases, as determined by clinical and biochemical parameters. Moreover, changes in MFI scores on Day 4 exhibited a correlation with other clinical and biochemical parameters, strengthening the association between nCD64 expression and sepsis severity. CONCLUSION: Our findings suggest that nCD64 serves as an independent prognostic factor in adult ICU sepsis patients. It offers a promising alternative to traditional sepsis markers for predicting patient outcomes, emphasizing its potential clinical utility in guiding therapeutic interventions and improving patient care in ICU settings.
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