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Abstract
Introduction: The gold standard for mitral valve disease is surgical treatment, for
which it is essential to have a deep understanding of its anatomy. Our work aims to
specify the relationships of the mitral annulus with the circumflex artery and define
areas of proximity and greater risk of compromise during mitral interventions.
Material and methods: A descriptive, observational, cross-sectional study was
conducted, in which 39 hearts from adult cadavers fixed in formaldehyde solution
were dissected. From an atrial view of the mitral valve, taking the mitral annulus
as a reference, several measurements were taken using Carpentier´s classification
of the sectors of the posterior mitral valve (P1, P2, and P3). Distance 1: from the
anterolateral commissure to the circumflex artery. Distance 2: from the middle third
of P1 to the artery. Distance 3: from P2 to the artery. Distance 4: from P3 to the artery.
Results: The global mean of distance 1 was 8.38 mm, of distance 2 was 8.16 mm, of
distance 3 was 7.09 mm, and of distance 4 was 7.97 mm. We found no statistically
significant differences according to coronary dominance.
Conclusion: The area of highest risk of injury to the circumflex artery concerning to
the mitral annulus corresponds to the P2 sector of the posterior mitral leaflet. Left
dominance and codominance would be associated with a greater risk.
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