title: [Left Ventricular Torsion in Papillary Muscle Relocation for Severe Functional Mitral Regurgitation].
abstract: A 42-year-old woman with a history of old myocardial infarction was admitted to our hospital with complaints of worsening orthopnea. Doppler echocardiography exhibited severe functional mitral valve regurgitation. Because of the tethered mitral valve, we performed mitral valve annuloplasty concomitantly with papillary muscle relocation procedure. The patient recovered well. Postoperative echocardiography had not exhibited recurrent mitral valve insufficiency. Moreover, postoperative left ventricular torsion using 2-dimentional speckle tracking imaging, improved at rest and at peak exercise, and this findings suggest that the reversal of left ventricular remodeling in relocation patients following preserved and connected mitral subvalvular apparatus may result from restoration of the global sequence of left ventricular twist mechanics. The analysis of left ventricular torsion may provide a more comprehensive evaluation of left ventricular mechanics and may help understand the effects of papillary muscle relocation with preserving mitral subvalvular apparatus.
authors.affiliation: Department of Cardiovascular Surgery, Nishinomiya Watanabe Cardiovascular Center, Nishinomiya, Japan.
authors.forename: Kazunori
authors.initials: K
authors.lastname: Yoshida
authors.forename: Chikako
authors.initials: C
authors.lastname: Hayashi
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Nakai
authors.forename: Eiichi
authors.initials: E
authors.lastname: Hyoudou
authors.forename: Koichi
authors.initials: K
authors.lastname: Tamita
authors.forename: Atsushi
authors.initials: A
authors.lastname: Yamamuro
authors.forename: Junichi
authors.initials: J
authors.lastname: Yoshikawa
mesh_terms: D000328:Adult; D004452:Echocardiography; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000503:physiopathology / Q000601:surgery*; D010210:Papillary Muscles / Q000601:surgery*