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Value of Laboratory Parameters in the Clinical Monitoring of Patients with SARS-COV-2 Infection (COVID-19)

M. Moreno Carbonell1, A. Gómez Martínez1, C. Hernández Mata1, E. González Gómez1, S. Martín-Consuegra Ramos1, M. Civeira Marín1, A. López Peña1, C. Rodríguez Lefler1, A.J. García Ortego1, S.F. Pinzón Mariño2, N. Fernández Mosteirin1, J.M. Calvo Villas1

1Hospital Universitario Miguel Servet, Zaragoza, Spain, 2Hospital Del Mar, Barcelona, Spain

Abstract Number: PB0257

Meeting: ISTH 2021 Congress

Theme: COVID and Coagulation » COVID and Coagulation, Clinical

Background: Association between some analytical parameters and clinical evolution of patients infected by SARS-COV-2 is a controversial issue.

Aims: Review the relationship between laboratory parameters and severity and/or lethality of the COVID-19.

Methods: Observational, cross-sectional and retrospective study. Data obtained from electronic health record of patients over 18 years of age admitted in our hospital, between March and May 2020 with suspected SARS-COV-2 infection. After descriptive statistical study, we did an inferential analysis using Mann-Whitney U test for independent samples, in order to verify association between the results of analytical parameters and the clinical severity (defined by hospitalization in conventional ward vs. intensive care units (ICU)) and/or lethality (alive vs. death at the end of the study).

Results: 668 patients were included, 345 men (52%) and 323 women (48%), with a median age of 70 years. 80% of patients had previous comorbidities, 10% were admitted to the ICU, and 17% died.Differences were found in hematimetric parameter between the different groups: leukocytes (103/µl): 8.3 in ICU patients vs. 6.5 in those admitted to the ward; platelet count (103/µl) of 182l in death patients vs. 223 in survivors; hemostasis parameters: D-dimer (DD) (µg/L) of 1379 and 1236 in deceased and admitted to the ICU respectively, compared to 734 and 786 in survivors and not admitted to ICU; and biochemical figures (increase in C-reactive protein (CRP), lactate dehydrogenase (LDH) or cardiac enzymes, the latter, especially, in patients who were deceased, with a median ultrasensitive troponin I (ng/L) of 34.75 vs. 7.1 in survivors. The differences were statistically significant (p value <0.01).
ICU vs. Ward admitted/Defeated vs survival. Inferential statistics.

Conclusions: Correlation exist between severity of infection and the increase in leukocytes, neutrophils, DD, CRP and LDH, and lymphopenia, in our sample. Decrease in the platelet count and the increase in cardiac enzymes were associated with an increased risk of mortality. 

To cite this abstract in AMA style:

Moreno Carbonell M, Gómez Martínez A, Hernández Mata C, González Gómez E, Martín-Consuegra Ramos S, Civeira Marín M, López Peña A, Rodríguez Lefler C, García Ortego AJ, Pinzón Mariño SF, Fernández Mosteirin N, Calvo Villas JM. Value of Laboratory Parameters in the Clinical Monitoring of Patients with SARS-COV-2 Infection (COVID-19) [abstract]. Res Pract Thromb Haemost. 2021; 5 (Suppl 2). https://abstracts.isth.org/abstract/value-of-laboratory-parameters-in-the-clinical-monitoring-of-patients-with-sars-cov-2-infection-covid-19/. Accessed June 25, 2022.

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