Hypertrophic cardiomyopathy (HCM) is a rare cardiac disease in canines. HCM involves the thickening of the left ventricular muscle, therefore decreasing the chamber size. This decrease in chamber size results in decreased cardiac outflow.
Clinical signs of HCM include fatigue, coughing, increased respiratory rate, and syncope (collapse episodes). Cardiac murmurs may or may not be noted, and some patients show no signs of cardiac disease.
HCM is diagnosed by echocardiogram to evaluate the thickness of the ventricle walls, and overall cardiac function.
Although some medications may be given, there is no general treatment for HCM.
Prognosis for HCM is guarded, with sudden death and congestive heart failure potentially occurring.