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Updated: Jun 5, 2025

Author Spotlight: Deciphering Coagulation Disorders in Traumatic Brain Injury Patients
Published on: August 4, 2023
Unveiling coagulation dysfunction in patients with COVID-19: a retrospective analysis
Ahmed Ali Jerah1, Abdullah Farasani2, Hisham Abu-Tawil3
1Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia.
Activated partial thromboplastin time (PTT) shows promise as a predictor of COVID-19 mortality. This coagulation marker demonstrated higher predictive performance than prothrombin time (PT) and international normalized ratio (INR) in a recent study.
Area of Science:
- Hematology
- Infectious Diseases
- Critical Care Medicine
Background:
- Coagulation dysfunction is a key feature of COVID-19 pathophysiology.
- Abnormal coagulation parameters are frequently observed in severe COVID-19 cases.
Purpose of the Study:
- To assess the predictive value of prothrombin time (PT), activated partial thromboplastin time (PTT), and international normalized ratio (INR) for mortality in COVID-19 patients.
Main Methods:
- Retrospective analysis of 156 COVID-19 patients.
- Measurement of PT, PTT, and INR upon admission.
- Receiver operating characteristic (ROC) curve analysis to determine predictive performance (AUC, sensitivity, specificity).
Main Results:
- Significant differences in PTT, PT, and INR were observed (P < 0.05).
- PTT showed the highest predictive performance with an Area Under the Curve (AUC) of 0.68.
- PTT achieved 83% sensitivity and 46% specificity for predicting mortality.
Conclusions:
- PTT may serve as a valuable prognostic marker for mortality risk in COVID-19 patients.
- Monitoring coagulation markers like PTT can aid in risk stratification and treatment guidance.
- Further research is needed to validate these findings and establish the clinical utility of coagulation markers in COVID-19 management.
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