Initial serum lactate levels of COVID-19 patients

Aim: In this study, we aimed to research whether the serum lactate of the COVID-19 patients presented to the initial emergency department can be used to make prognosis of the patients. Materials and Methods: A total of 39 COVID-19 patients were included in the study. Fourteen (35.8%) patients were over 65 years old (Group 1). Twenty-five patients (64.2%) were under 65 years old (Group 2). The diagnosis was made via the oro-nasopharyngeal swab PCR test. We noted the demographic data (age, gender, comorbidities), initial (emergency service presentation) complete blood count parameters including WBC, Plt/Lymp ratio, CRP, procalcitonin and serum lactate levels. We also noted the hospitalization unit (clinic/intensive care unit), hospitalization length, and the outcomes. Patients were divided into two groups according to 65 years and the groups' laboratory results with the prognosis. Results: The mean age of the study group was 55 years. Fourteen (35.8%) patients were over 65 years old. Serum lactate levels did not significantly differ between groups. Hospital length of stay was significantly longer in patients over 65 years of age. Age and hospitalization length were positively correlated with age in all patients. Discussion: Serum lactate level measurement has recently become an important parameter especially for critically ill patients. It is beneficial for predicting the severity and prognosis in severe infections. Serum lactate levels in COVID-19 patients did not differ between age groups. Hospitalization length was longer in elderly patients.