Mitral Valve Basal Chordae: Comparative Anatomy and Terminology

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Presentation transcript:

Mitral Valve Basal Chordae: Comparative Anatomy and Terminology Alexandra A. Degandt, MD, Patricia A. Weber, DrPH, Hashim A. Saber, PhD, Carlos M.G. Duran, MD, PhD The Annals of Thoracic Surgery Volume 84, Issue 4, Pages 1250-1255 (October 2007) DOI: 10.1016/j.athoracsur.2007.05.008 Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

Fig 1 Terminology superimposed on an atrial view of the mitral valve. (T1 = left trigone; T2 = right trigone; C1 = anterolateral commissure; C2 = posteromedial commissure; A1 and A2 = anterior leaflet; P1 and P2 = posterior leaflet lateral scallops; PM1 and PM2 = anterolateral and posteromedial segments of the posterior leaflet mid-scallop; M1 = anterolateral papillary muscle; M2 = posteromedial papillary muscle.) The Annals of Thoracic Surgery 2007 84, 1250-1255DOI: (10.1016/j.athoracsur.2007.05.008) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

Fig 2 A diagram and photograph of the ventricular aspect of the anterior mitral leaflet show the anterior basal chordae. (Tl = left trigone; T2 = right trigone; AB1 = anterolateral basal chorda; AB2 = posteromedial basal chorda; AMC = aortomitral curtain; AS1 = anterolateral strut chorda; AS2 = posteromedial strut chorda; M1 = anterolateral papillary muscle; M2 = posteromedial papillary muscle; Rz = rough zone; Sz = smooth zone.) The Annals of Thoracic Surgery 2007 84, 1250-1255DOI: (10.1016/j.athoracsur.2007.05.008) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

Fig 3 A ventricular view of the posterior mitral leaflet outlines the posterior strut chordae. (PS1 = posterior strut chorda arising from anterolateral papillary muscle; PS2 = posterior strut chorda arising from posteromedial papillary muscle.) The Annals of Thoracic Surgery 2007 84, 1250-1255DOI: (10.1016/j.athoracsur.2007.05.008) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions

Fig 4 Left atrial view of the mitral valve. The continuous line represents basal chorda insertions into leaflets. Large stars represent the insertion of the anterior strut chordae. Smaller stars represent the insertion of the posterior strut chordae. Dots correspond to insertions of basal chordae. (AS1 and AS2 = anterior strut chordae; AB1 and AB2 = lateral anterior basal chordae; PS1 and PS2 = posterior strut chordae; PMB1 and PMB2 = lateral posterior basal chordae.) The Annals of Thoracic Surgery 2007 84, 1250-1255DOI: (10.1016/j.athoracsur.2007.05.008) Copyright © 2007 The Society of Thoracic Surgeons Terms and Conditions