Table 3.

Thromboembolic risk stratification and bridging considerations

IndicationMechanical heart valveAtrial fibrillationVTE
Guideline(s)ACCP 2012, ACC/AHA 2020ACCP 2012, ACC 2017ACCP 2012, ASH 2018
Thrombotic riskCriteriaRecommendationCriteria*RecommendationCriteriaRecommendation
High • All mitral valve
• Caged-ball and tilting disc
• Stroke or TIA in past 6 months 
Suggest bridging/reasonable to bridge CHADS2
>4 
CHA2DS2-VASc
>7 
Suggest bridging • Within 3 months
• Severe thrombophilia 
CHEST 2012: Suggest bridging
ASH 2018: Not addressed 
Moderate Bileaflet aortic valve + risk factors
• Atrial fibrillation
• Prior stroke or TIA
• Hypertension
• Diabetes
• Congestive heart failure
• Age >75 years 
Individualized decision based on patient and procedural nuances CHADS2
3-4 
CHA2DS2-VASc
5 or 6 
Individualized decision based on patient and procedural nuances • Past 3-12 months
• Recurrent VTE
• Active cancer
• Nonsevere thrombophilia 
CHEST 2012: Individualized decision based on patient and procedural nuances
ASH 2018: Do not bridge 
Low Bileaflet aortic valve without risk factors Do not bridge CHADS2
≤2 
CHA2DS2-VASc
<4 
Do not bridge More than 12 months ago CHEST 2012: Do not bridge
ASH 2018: Do not bridge 
IndicationMechanical heart valveAtrial fibrillationVTE
Guideline(s)ACCP 2012, ACC/AHA 2020ACCP 2012, ACC 2017ACCP 2012, ASH 2018
Thrombotic riskCriteriaRecommendationCriteria*RecommendationCriteriaRecommendation
High • All mitral valve
• Caged-ball and tilting disc
• Stroke or TIA in past 6 months 
Suggest bridging/reasonable to bridge CHADS2
>4 
CHA2DS2-VASc
>7 
Suggest bridging • Within 3 months
• Severe thrombophilia 
CHEST 2012: Suggest bridging
ASH 2018: Not addressed 
Moderate Bileaflet aortic valve + risk factors
• Atrial fibrillation
• Prior stroke or TIA
• Hypertension
• Diabetes
• Congestive heart failure
• Age >75 years 
Individualized decision based on patient and procedural nuances CHADS2
3-4 
CHA2DS2-VASc
5 or 6 
Individualized decision based on patient and procedural nuances • Past 3-12 months
• Recurrent VTE
• Active cancer
• Nonsevere thrombophilia 
CHEST 2012: Individualized decision based on patient and procedural nuances
ASH 2018: Do not bridge 
Low Bileaflet aortic valve without risk factors Do not bridge CHADS2
≤2 
CHA2DS2-VASc
<4 
Do not bridge More than 12 months ago CHEST 2012: Do not bridge
ASH 2018: Do not bridge 
*

ACCP 2012 based on CHADS2; 2017 ACC expert consensus decision pathway for periprocedural management of anticoagulation based on CHA2DS2-VASc.

ACC, American College of Cardiology; ACCP, American College of Chest Physicians; AHA, American Heart Association.

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