Related Experiment Video
Updated: Dec 3, 2025

Author Spotlight: Deciphering Coagulation Disorders in Traumatic Brain Injury Patients
Published on: August 4, 2023
The values of coagulation function in COVID-19 patients
Xin Jin1,2, Yongwei Duan1,2, Tengfei Bao1,2
1Department of Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.
COVID-19 patients exhibit abnormal blood coagulation. Elevated levels of specific coagulation markers, like t-PAIC and D-Dimer, predict mortality risk and indicate the need for dynamic monitoring.
Area of Science:
- Hematology
- Infectious Diseases
- Critical Care Medicine
Background:
- COVID-19 is associated with significant morbidity and mortality.
- Coagulopathy, or abnormal blood clotting, is a recognized complication in severe COVID-19.
- Understanding coagulation derangements is crucial for managing COVID-19 patients.
Purpose of the Study:
- To investigate blood coagulation function in COVID-19 patients.
- To determine the correlation between coagulopathy and COVID-19 disease severity.
- To identify coagulation parameters predictive of mortality.
Main Methods:
- Retrospective analysis of 147 clinically diagnosed COVID-19 patients.
- Measurement of various coagulation markers including TAT, PIC, TM, t-PAIC, PT, INR, APTT, FIB, TT, DD, and PLT.
- Logistic regression analysis to identify independent risk factors for mortality.
Main Results:
- COVID-19 patients showed significantly higher levels of TAT, PIC, TM, t-PAIC, PT, INR, FIB, and DD compared to healthy controls.
- Patients with thrombotic disease had elevated coagulation markers and higher case-fatality.
- TAT, PIC, TM, t-PAIC, PT, INR, APTT, FIB, DD, and PLT correlated with disease severity.
- t-PAIC and DD were identified as independent risk factors for mortality.
Conclusions:
- Most COVID-19 patients present with dysregulated coagulation systems.
- Dynamic monitoring of coagulation parameters is essential for managing COVID-19.
- Specific markers like t-PAIC and DD can predict mortality risk in COVID-19 patients.
More Related Videos
13:08Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
09:38A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
Published on: February 14, 2017
Related Concept Videos
Coagulation
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
Coagulation
Extrinsic and Intrinsic Pathways of Hemostasis
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Clot Retraction and Fibrinolysis
Introduction to Hemostasis
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized,...