Back to Search Start Over

Abstract 15888: Platelet Activation is Associated With All-cause Mortality in Patients With Covid-19

Authors :
Yuhe Xia
Margaret Black
Jeffrey S. Berger
Lawrence Lin
Tessa J. Barrett
Judith S. Hochman
Angela Lee
Paolo Cotzia
Source :
Circulation. 142
Publication Year :
2020
Publisher :
Ovid Technologies (Wolters Kluwer Health), 2020.

Abstract

Background: COVID-19 is a global pandemic with patients at increased risk for all-cause mortality. Virus-platelet interactions are linked to viral pathogenesis and increased risk of adverse events. Aim: To investigate the relationship between in vivo platelet activity markers and all-cause mortality in hospitalized patients with COVID-19. Method: Plasma samples were collected from 100 hospitalized patients on the day of PCR-confirmed COVID-19 diagnosis. Thromboxane B 2 (TxB 2 ), P-selectin, and soluble CD40 ligand (sCD40L) were measured in plasma, and mean platelet volume (MPV) assessed. Subjects were followed until discharge or death. Results: Among 100 patients, the median age was 65 years (IQR: 55, 75), 39% were female, and 32 died or experienced a thrombotic event. The baseline platelet activation markers, P-selectin (p=0.02), sCD40L (p=0.03) and MPV (p=0.005) were higher in patients who died. After adjustment for age, sex, race/ethnicity, platelet count, antiplatelet therapy, and chronic obstructive pulmonary disease, TxB 2 (p=0.036), P-selectin (p=0.007), sCD40L (p=0.02) and MPV (p=0.01) were each independently associated with death after multivariable adjustment ( Table 1 ). Conclusions: Biomarkers of platelet activation are significantly associated with death or thrombosis in patients hospitalized with COVID-19. Our findings suggest multiple platelet activation mechanisms may contribute to adverse events. Further investigation into the mechanistic role of platelets in COVID-19 pathogenesis and the potential role of antiplatelet therapy is warranted. Table 1. Multivariable regression models of all-cause mortality. Odds ratios (OR) from logistic regression analysis per SD increase for biomarker levels adjusted for age, sex, race, antiplatelet therapy, platelet count, and chronic obstructive pulmonary disease (COPD).

Details

ISSN :
15244539 and 00097322
Volume :
142
Database :
OpenAIRE
Journal :
Circulation
Accession number :
edsair.doi...........cca7bd7e8c08e0b8ab0bf7b138ee0b5e
Full Text :
https://doi.org/10.1161/circ.142.suppl_3.15888