Dizziness Playing the Saxophone Secondary to Hypertrophic Cardiomyopathy.

A decrease in left ventricular volume increases the severity of left ventricular outflow tract obstruction in patients with obstructive hypertrophic cardiomyopathy, formerly called idiopathic hypertrophic subaortic stenosis. Because of this, a musician with the condition develops dizziness playing his saxophone which requires repeated and prolonged Valsalva maneuvers.