Hemodynamic changes support the hypothesis that left ventricular outflow obstruction in idiopathic hypertrophic subaortic stenosis is determined by contraction force, volume, and afterload.
Observational
What factors determine the degree of left ventricular outflow obstruction in patients with idiopathic hypertrophic subaortic stenosis?
The degree of left ventricular outflow obstruction in idiopathic hypertrophic subaortic stenosis is dynamically determined by ventricular contraction force, volume, and afterload.
Hemodynamic changes occurring with spontaneous atrioventricular dissociation, left ventricular pulsus alternans, a rise in systemic arterial pressure, and the injection of angiographic contrast material support the hypothesis that in a given patient with idiopathic hypertrophic subaortic stenosis the degree of left ventricular outflow obstruction is determined by three factors: the force of left ventricular contraction, ventricular volume, and ventricular afterload.
Glancy et al. (Fri,) conducted a observational in Idiopathic hypertrophic subaortic stenosis. Hemodynamic changes support the hypothesis that left ventricular outflow obstruction in idiopathic hypertrophic subaortic stenosis is determined by contraction force, volume, and afterload.