small left ventriclehypercontractile left ventricletrabeculated ventriclecardiomyopathy left ventriclehyperdynamic left ventricletypes of hypertrophic cardiomyopathydescription of right ventriclehypokinetic left ventriclehypertrophied left ventriclehyperkinetic left ventriclehypoplastic left ventricleborderline left ventricle