Improvements in left ventricular twist mechanics following myectomy for hypertrophic cardiomyopathy with mid-ventricular obstruction

• Published in: Interactive cardiovascular and thoracic surgery Vol. 25; no. 1; pp. 128 - 130
• Main Authors: Adhyapak, Srilakshmi M., Menon, Prahlad G., Rao Parachuri, V.
• Format: Journal Article
• Language: English
• Published: England Oxford University Press 01.07.2017
• Subjects: Cardiac Surgical Procedures - methods; Cardiomyopathy, Hypertrophic - complications; Cardiomyopathy, Hypertrophic - diagnosis; Cardiomyopathy, Hypertrophic - surgery; Diastole; Echocardiography, Doppler; Female; Heart Ventricles - diagnostic imaging; Heart Ventricles - physiopathology; Heart Ventricles - surgery; Humans; Magnetic Resonance Imaging, Cine; Male; Middle Aged; Stroke Volume; Ventricular Function, Left - physiology; Ventricular Outflow Obstruction - diagnosis; Ventricular Outflow Obstruction - etiology; Ventricular Outflow Obstruction - surgery; Cardiomyopathy; Rotation; Left ventricle; Myectomy; Hypertrophy
• ISSN: 1569-9293; 1569-9285
• DOI: 10.1093/icvts/ivx054

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.