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Evaluation of variation in D-dimer levels among COVID-19 and bacterial pneumonia: a retrospective analysis
ISTH Academy. 06/17/20; 9559 Label: External COVID 19 Resources

Description
Abstract
In the recent outbreak of novel coronavirus infection worldwide, the risk of thrombosis and bleeding should be concerned. We aimed to observe the dynamic changes of D-dimer levels during disease progression to evaluate their value for thrombosis. In this study, we report the clinical and laboratory results of 57 patients with confirmed COVID-19 pneumonia and 46 patients with confirmed community-acquired bacterial pneumonia (CAP). And their concentrations of D-dimer, infection-related biomarkers, and conventional coagulation were retrospectively analyzed. The Padua prediction score is used to identify patients at high risk for venous thromboembolism (VTE). The results found that, on admission, both in COVID-19 patients and CAP patients, D-dimer levels were significantly increased, and compared with CAP patients, D-dimer levels were higher in COVID-19 patients (P  < 0.05). Besides, we found that in COVID-19 patients, D-dimer were related with markers of inflammation, especially with hsCRP (R = 0.426, P < 0.05). However, there was low correlation between VTE score and D-dimer levels (Spearman’s R = 0.264, P > 0.05) weakened the role of D-dimer in the prediction of thrombosis. After treatments, D-dimer levels decreased which was synchronous with hsCRP levels in patients with good clinical prognosis, but there were still some patients with anomalous increasing D-dimer levels after therapy. In conclusion, elevated baseline D-dimer levels are associated with inflammation but not with VTE score in COVID-19 patients, suggesting that it is unreasonable to judge whether anticoagulation is needed only according to D-dimer levels. However, the abnormal changes of D-dimer and inflammatory factors suggest that anticoagulant therapy might be needed.

Disclaimer

Answers to questions about COVID-19 published herein are provided by the International Society on Thrombosis and Haemostasis, Inc. (“ISTH”) for voluntary, informational use by providers in the rapidly evolving novel coronavirus crisis. This information does not constitute medical or legal advice, is not intended for use in the diagnosis or treatment of individual conditions, does not endorse products or therapies, recommend or mandate any particular course of medical care, and is not a statement of the standard of care. New evidence may emerge between the time information is developed and when it is published or read. The information is not comprehensive or continually updated. This information is not intended to substitute for the independent professional judgment of the treating provider in the context of treating the individual patient. ISTH provides this information on an “as is” basis, and makes no warranty, express or implied, regarding the information, including but not limited to its completeness or accuracy. ISTH specifically disclaims any warranties of merchantability or fitness for a particular use or purpose. ISTH assumes no responsibility for any injury or damage to persons or property arising out of or related to any use of this information or for any errors or omissions. Use of the information is subject to the complete ISTH website Terms of Use.

The appearance of external hyperlinks does not constitute endorsement by ISTH of the linked websites, or the information, products or services contained therein. ISTH does not exercise any editorial control over the information you may find at these locations nor does ISTH make any representation of their accuracy or completeness. Please contact those websites with any questions.
Abstract
In the recent outbreak of novel coronavirus infection worldwide, the risk of thrombosis and bleeding should be concerned. We aimed to observe the dynamic changes of D-dimer levels during disease progression to evaluate their value for thrombosis. In this study, we report the clinical and laboratory results of 57 patients with confirmed COVID-19 pneumonia and 46 patients with confirmed community-acquired bacterial pneumonia (CAP). And their concentrations of D-dimer, infection-related biomarkers, and conventional coagulation were retrospectively analyzed. The Padua prediction score is used to identify patients at high risk for venous thromboembolism (VTE). The results found that, on admission, both in COVID-19 patients and CAP patients, D-dimer levels were significantly increased, and compared with CAP patients, D-dimer levels were higher in COVID-19 patients (P  < 0.05). Besides, we found that in COVID-19 patients, D-dimer were related with markers of inflammation, especially with hsCRP (R = 0.426, P < 0.05). However, there was low correlation between VTE score and D-dimer levels (Spearman’s R = 0.264, P > 0.05) weakened the role of D-dimer in the prediction of thrombosis. After treatments, D-dimer levels decreased which was synchronous with hsCRP levels in patients with good clinical prognosis, but there were still some patients with anomalous increasing D-dimer levels after therapy. In conclusion, elevated baseline D-dimer levels are associated with inflammation but not with VTE score in COVID-19 patients, suggesting that it is unreasonable to judge whether anticoagulation is needed only according to D-dimer levels. However, the abnormal changes of D-dimer and inflammatory factors suggest that anticoagulant therapy might be needed.

Disclaimer

Answers to questions about COVID-19 published herein are provided by the International Society on Thrombosis and Haemostasis, Inc. (“ISTH”) for voluntary, informational use by providers in the rapidly evolving novel coronavirus crisis. This information does not constitute medical or legal advice, is not intended for use in the diagnosis or treatment of individual conditions, does not endorse products or therapies, recommend or mandate any particular course of medical care, and is not a statement of the standard of care. New evidence may emerge between the time information is developed and when it is published or read. The information is not comprehensive or continually updated. This information is not intended to substitute for the independent professional judgment of the treating provider in the context of treating the individual patient. ISTH provides this information on an “as is” basis, and makes no warranty, express or implied, regarding the information, including but not limited to its completeness or accuracy. ISTH specifically disclaims any warranties of merchantability or fitness for a particular use or purpose. ISTH assumes no responsibility for any injury or damage to persons or property arising out of or related to any use of this information or for any errors or omissions. Use of the information is subject to the complete ISTH website Terms of Use.

The appearance of external hyperlinks does not constitute endorsement by ISTH of the linked websites, or the information, products or services contained therein. ISTH does not exercise any editorial control over the information you may find at these locations nor does ISTH make any representation of their accuracy or completeness. Please contact those websites with any questions.

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