In middle aged and older cats with HCM, secondary systemic causes of left ventricular wall thickening should be excluded such as systemic hypertension and hyperthyroidism. (vvs.vet)
However, the end - stage of the disease frequently results in ventricular wall thinning, as well as decreased myocardial contractility and severe left atrial enlargement. (vvs.vet)
HCM is diagnosed once other secondary causes of left ventricular wall thickening (hypertrophy), such as hyperthyroidism, systemic hypertension, aortic stenosis and others have been ruled out. (vin.com)