Eliza P Teo1, Jonathan G Teoh, Judy Hung. 1. Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Abstract
PURPOSE OF REVIEW: This section reviews abnormalities of the mitral valve apparatus that are associated with hypertrophic obstructive cardiomyopathy. RECENT FINDINGS: Mitral valve abnormalities in hypertrophic obstructive cardiomyopathy include leaflet elongation and thickening and hypertrophy with anterior displacement of the papillary muscles. This combination contributes to the development of systolic anterior motion. The resultant flow forces during systolic anterior motion pulling the leaflets into the left ventricular outflow tract also result in reduced leaflet coaptation and a posteriorly directed mitral regurgitant jet. Additional mitral valve abnormalities include degenerative leaflet changes, aberrant chordal attachments and papillary muscle anomalies. SUMMARY: Mitral valve abnormalities are common in hypertrophic obstructive cardiomyopathy and play an important role in the pathophysiology of dynamic left ventricular outflow tract obstruction.
PURPOSE OF REVIEW: This section reviews abnormalities of the mitral valve apparatus that are associated with hypertrophic obstructive cardiomyopathy. RECENT FINDINGS:Mitral valve abnormalities in hypertrophic obstructive cardiomyopathy include leaflet elongation and thickening and hypertrophy with anterior displacement of the papillary muscles. This combination contributes to the development of systolic anterior motion. The resultant flow forces during systolic anterior motion pulling the leaflets into the left ventricular outflow tract also result in reduced leaflet coaptation and a posteriorly directed mitral regurgitant jet. Additional mitral valve abnormalities include degenerative leaflet changes, aberrant chordal attachments and papillary muscle anomalies. SUMMARY:Mitral valve abnormalities are common in hypertrophic obstructive cardiomyopathy and play an important role in the pathophysiology of dynamic left ventricular outflow tract obstruction.
Authors: Mihaela Octavia Popa; Ana Maria Irimia; Mihai Nicolae Papagheorghe; Elena Miruna Vasile; Simona Andreea Tircol; Raluca Andreea Negulescu; Catalina Toader; Robert Adam; Lucian Dorobantu; Cristina Caldararu; Maria Alexandrescu; Sebastian Onciul Journal: Discoveries (Craiova) Date: 2016-06-30
Authors: Mustafa Erden; Hannah G van Velzen; Myrthe E Menting; Annemien E van den Bosch; Ben Ren; Michelle Michels; Wim B Vletter; Ron T van Domburg; Arend F L Schinkel Journal: J Ultrasound Date: 2018-01-06