Aims: We sought to analyse local distribution of aortic annulus and left ventricular outflow tract (LVOT) calcification in patients undergoing transcatheter aortic valve replacement (TAVR) and its impact on aortic regurgitation (AR) immediately after device placement. Methods and results: A group of 177 patients with severe aortic stenosis undergoing multislice computed tomography of the aortic...

BACKGROUND Left ventricular outflow tract velocity time integral (LVOT VTI) is a measure of cardiac systolic function and cardiac output. Heart failure patients with low cardiac output are known to have poor cardiovascular outcomes. Thus, extremely low LVOT VTI may predict heart failure patients at highest risk for mortality. METHODS Patients with heart failure and extremely low LVOT VTI were...

OBJECTIVES Detailed information about the dynamic geometry of the left ventricular outflow tract (LVOT) is of great importance for transcatheter aortic valve implantation (TAVI), since these valves utilize the LVOT as a landing zone for optimum placement and fixation. The LVOT is generally considered circular in shape and stable in its conformation. However, recent studies indicate that this ma...

Left ventricular outflow tract (LVOT) obstruction with systolic anterior motion (SAM) of mitral valve is not only limited to patients with hypertrophic cardiomyopathy. A diagnosis of LVOT obstruction with SAM is important because conventional inotropic support may potentially aggravate hemodynamic deterioration. We present a case of LVOT obstruction with SAM in a patient who underwent an emerge...

INTRODUCTION Takotsubo cardiomyopathy (TCM) can be complicated by left ventricular outflow tract (LVOT) obstruction and severe acute mitral regurgitation (MR), leading to hemodynamic instability in an otherwise benign disorder. Despite the severity of these complications, there is a paucity of literature on the matter. Because up to 20-25% of TCM patients develop LVOT obstruction and/or MR, it ...

In 1957, Brock1 made the distinction between congenital subaortic stenosis characterized by a fibrous ridge and “functional subvalvar stenosis” resulting from “muscular hypertrophy,” describing 3 patients with the latter. Brock initially attributed the hypertrophy and resultant outflow obstruction to systemic hypertension, a conclusion he withdrew in a 1959 publication.2 Between these 2 publica...

coronary artery disease (CAD) and Parkinson’s Disease presented with episodic dizziness and left sided chest pressure that occurs when climbing one flight of stairs. Her symptoms resolve only after lying supine at the top of the stairs. Changes in vital signs taken at the bottom of and after climbing one flight of stairs were: systolic blood pressure (SBP): 132 to 82 mmHg; heart rate: 70 to 92 ...

BACKGROUND Radiofrequency catheter ablation (RFCA) has been used for the ablation of premature ventricular contractions (PVCs) or ventricular tachycardia (VT). To date, the mapping and catheter ablation of the arrhythmias originating from the left ventricular outflow tract (LVOT) has not been specified. This study investigates the electrocardiogram (ECG) feature of PVCs or VT originating from t...

Abstract Introduction Left bundle branch block (LBBB) and permanent pacemaker (PM) are frequent complications after transcatheter aortic valve implantation (TAVI), but few predictors have been reported. Purpose This study sought to determine the relationship between left ventricular outflow tract (LVOT) morphology development of conduction disturbances TAVI. Methods From 1/2020 12/2020 consecut...

OUTFLOWTRACT OBSTRUCTION IS A FEAREDAND POTENTIALLY LETHAL COMPLICATION OF TRANSCATHETER mitral valve replacement (TMVR), mitral valve-in-valve (ViV), and valve-in-ring (ViR) procedures as well as implantation of transcatheter heart valves in calcific mitral valve disease. These procedures ultimately lead to elongation of the outflow tract into the left ventricle, whereas the pre-existing “nati...