Patients with hypertrophic cardiomyopathy are frequently evaluated in the cardiac catheterization laboratory to assess baseline hemodynamics, left ventricular to aortic gradients, and coronary anatomy. Imaging performed in the cardiac catheterization laboratory can also provide important diagnostic and physiology information. In this lesson, we will review the typical findings on left ventriculography, review the physiology of systolic anterior motion of the mitral valve, and review the clinical and hemodynamic profiles associated with acquired left ventricular outflow track obstruction.

• To recognize left ventricular contraction patterns on left ventriculography that are associated with hypertrophic cardiomyopathy
• To describe the pathophysiology of systolic anterior motion of the mitral valve associated with hypertrophic cardiomyopathy
• To recognize the physiology associated with acquired dynamic obstruction of the left ventricular outflow track