1 For adult dogs or puppies older than 16 weeks, the intranasal vaccine can be given once, and the injectable vaccine should be given twice, two to four weeks apart.
Signs and symptoms of hypertrophic cardiomyopathy may include one or more of the following: 1  Shortness of breath, especially during exercise. 2  Chest pain, especially during exercise. 3  Fainting, especially during or just after exercise or exertion.  Sensation of rapid, fluttering or pounding heartbeats (palpitations)
Hypertrophic cardiomyopathy. Hypertrophic cardiomyopathy (HCM) is a disease in which a portion of the myocardium (heart muscle) is hypertrophic (enlarged) without any obvious cause, creating functional impairment of the heart. It is the leading cause of sudden cardiac death in young athletes.