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Published on: June 2, 2015
Venous thrombosis: prevalence of prothrombotic defects in north Indian population
Maitreyee Bhattacharyya1, M Kannan, V P Chaudhry
1Department of Hematology, All India Institute of Medical Sciences, New Delhi.
Insights
This study investigated prothrombotic states in 431 thrombosis patients. Acquired or inherited factors were identified in over half, highlighting the importance of comprehensive risk assessment for venous thrombosis.
Area of Science:
- Hematology
- Vascular Medicine
- Genetics
Background:
- Venous thrombosis is a complex condition with various underlying causes.
- Identifying prothrombotic states is crucial for effective management and prevention.
Purpose of the Study:
- To evaluate the prevalence of acquired and inherited prothrombotic states in patients with venous thrombosis.
- To identify specific risk factors associated with these conditions.
Main Methods:
- Retrospective analysis of 431 patients diagnosed with venous thrombosis.
- Assessment for acquired risk factors including liver disease, oral contraceptives, puerperium, malignancy, and lupus anticoagulant.
- Laboratory testing for deficiencies in Protein C, Protein S, Antithrombin III (AT III), and Activated Protein C Resistance (APC-R).
Main Results:
- Acquired risk factors were present in 28.7% of patients, and inherited factors in 32.3%.
- Low Protein C levels (21.1%), Protein S deficiency (19.0%), and AT III deficiency (6.4%) were observed, with significant proportions attributed to acquired causes.
- Activated Protein C Resistance (APC-R) was detected in 12.5% of cases.
Conclusions:
- A significant proportion of venous thrombosis cases are associated with identifiable acquired or inherited prothrombotic states.
- Acquired factors play a substantial role in deficiencies of Protein C, Protein S, and AT III.
- Further investigation into these prothrombotic states is warranted for improved patient outcomes.
Abstract:
431 patients with thrombosis of different venous system were evaluated for underlying acquired and inherited prothrombotic states. Associated acquired risk factors were observed to be present in 28.7% patients and possible inherited in 32.3%, in the rest, no cause could be identified. Major acquired risk factors included coexistence of liver disease (12.2%), oral contraceptives (4.1%), puerperium (2.5%), malignancy (2.3%) and lupus anticoagulant (2%). Low levels of protein C were detected in 21.1% and of which 11.3% were attributed to acquired factors. Protein S deficiency was found in 19.0% and of these 10.4% cases were associated with acquired risk factors. Antithrombin III (AT III) deficiency was detected in 6.4% of patients, of which 4.8% were secondary to acquired factors. In the rest, deficiency of protein C, protein S and AT III were attributed to inherited factors as no associated acquired risk factor was present. Activated protein C resistance (APC-R) was present in 12.5% cases.
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