Related Experiment Video
Updated: Aug 23, 2026

Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation
Published on: May 31, 2016
Long-term warfarin treatment may induce arterial calcification in humans: case report
Thomas R Schori1, George E Stungis
1Millennium Research, Normal, Ill 61761, USA. tschori@millennium-mktg.com
Insights
Long-term warfarin treatment may lead to arterial calcification, a condition previously observed in animals but not clinically reported in humans. Physicians should consider this potential side effect in patients on this anticoagulant.
Area of Science:
- Cardiology
- Pharmacology
- Vascular Biology
Background:
- Warfarin is a widely used anticoagulant medication.
- Previous animal studies suggest warfarin can induce arterial calcification.
- Clinical evidence linking warfarin to arterial calcification in humans is lacking.
Observation:
- A healthy male patient on long-term warfarin therapy presented with highly calcified coronary arteries during a routine examination.
- The patient was asymptomatic, with no prior indications of cardiovascular issues.
Findings:
- The case highlights a potential clinical manifestation of warfarin-induced arterial calcification.
- This finding contrasts with the absence of previous human case reports.
Implications:
- Further experimental research is warranted to elucidate the relationship between warfarin and arterial calcification.
- Clinicians should consider arterial calcification as a potential adverse effect in patients undergoing long-term warfarin therapy.
Purpose:
To report a case of arterial calcification in a person who has had long-term treatment with warfarin. Although the anticoagulant has been shown to induce arterial calcification in laboratory animals, there have been no previous reports implicating warfarin as a clinical factor.
Clinical Features:
On routine annual examination, the coronary arteries of a healthy man with no symptoms who has had long-term warfarin treatment were found to be highly calcified.
Conclusion:
It would be prudent to further evaluate experimentally the relationship of warfarin and arterial calcification. We suggest that physicians prescribing long-term warfarin treatment consider arterial calcification as one of its potential consequences.
Related Concept Videos
Venous Thrombosis III: Interprofessional Care
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Peripheral Artery Disease III: Interprofessional Care
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies