ArticleJACC. Case reports2025
Incidental Finding of Vieussens' Collateral in Tricuspid Regurgitation Due to Infective Endocarditis.
Article in JACC. Case reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThis is an exceedingly rare case of an incidental finding of Vieussens' collateral with severe tricuspid regurgitation due to infective endocarditis. CASE SUMMARY: A 46-year-old male presented with dizziness, and a workup revealed infective endocarditis of the tricuspid valve with severe tricuspid regurgitation. Coronary angiography revealed a chronic total occlusion of the ostial right coronary artery (RCA), with well-developed collaterals from the left anterior descending artery to the RCA. The patient underwent tricuspid valve replacement and single-vessel coronary artery bypass grafting to the RCA. DISCUSSION: This case demonstrates the importance of identifying Vieussens' collateral and assessing the need for bypass surgery based on the clinical presentation, particularly if the patient experiences a future myocardial infarction and percutaneous coronary intervention becomes challenging. TAKE-HOME MESSAGES: Understanding Vieussens' collateral anatomy and clinical presentation are key to assessing future MI risk. Due to intervention challenges, coronary artery bypass grafting may be needed to protect against future ischemic events.
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