title: Improvements in left ventricular twist mechanics following myectomy for hypertrophic cardiomyopathy with mid-ventricular obstruction.
abstract: We aimed to evaluate left ventricle twist mechanics in mid-ventricular obstructive and apical type of hypertrophic cardiomyopathy and changes induced by myectomy. We studied 3 consecutive patients by cardiac magnetic resonance preoperatively and 6 weeks after myectomy. We calculated the apical and basal rotations at the base and apex respectively. All 3 patients underwent myectomy by the standard described technique. The basal rotations remained the same, while there was an improvement in the maximal apical rotation from 0.385 ± 0.3975° to 0.9086 ± 1.1751°. In hypertrophic cardiomyopathy with mid-ventricular obstruction and apical hypertrophy, there is decreased apical rotation, which improves after myectomy.
authors.affiliation: Department of Cardiology, St. John's Medical College Hospital, Bangalore, India.
authors.forename: Srilakshmi M
authors.initials: SM
authors.lastname: Adhyapak
authors.affiliation: Department of Biomedical Engineering, Duquesne University, Pittsburgh, PA, USA.
authors.forename: Prahlad G
authors.initials: PG
authors.lastname: Menon
authors.affiliation: Department of Cardiac Surgery, Narayana Hrudayalaya Institute of Medical Sciences, Bangalore, Karnataka, India.
authors.forename: V
authors.initials: V
authors.lastname: Rao Parachuri
mesh_terms: D006348:Cardiac Surgical Procedures / Q000379:methods*; D002312:Cardiomyopathy, Hypertrophic / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D003971:Diastole; D015150:Echocardiography, Doppler; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D019028:Magnetic Resonance Imaging, Cine; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume; D016277:Ventricular Function, Left / Q000502:physiology; D014694:Ventricular Outflow Obstruction / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*
keywords: Cardiomyopathy; Hypertrophy; Left ventricle; Myectomy; Rotation