Stage C: This stage includes dogs with current or previous signs of heart failure. Stage B2: There ARE visible changes to the heart seen on radiographs or echocardiography.Stage B1: There are no visible heart changes on radiographs or echocardiography.Stage B is further divided into two substages: Stage B : Dogs with evidence of heart disease (for example, a heart murmur) but no evidence of congestive heart failure. Stage A : Dogs that are at risk of heart disease (due to breed predisposition or other factors) but not yet showing signs of heart disease. Heart failure in dogs is divided into several stages, which correspond to the severity of disease. Stages of Canine Congestive Heart Failure Anything that interferes with the function of the heart, causing it to work harder than it normally would, can lead to CHF. Congestive heart failure causes fluid (edema) to pool in areas of the body, while also preventing oxygen delivery to the tissues.Ĭongestive heart failure in dogs can be caused by any underlying heart disease. Failure of the heart to function properly leads to changes in circulation. The heart is responsible for pumping blood throughout a dog’s body. In congestive heart failure, a dog’s heart is unable to keep up with the body’s circulatory demands.
Dogs with heart failure experience a variety of clinical signs, including respiratory difficulties and death. In congestive heart failure, the heart is no longer able to move blood and fluid throughout the body effectively. While some dogs with heart disease show no symptoms, some go on to develop congestive heart failure, or CHF. Small- and medium-breed dogs are considered geriatric at the age of 9 years old, while large-breed dogs are considered geriatric at the age of 7. In geriatric dogs, heart disease is even more common-at least 60 percent of geriatric dogs have some degree of heart disease ( 2 ). Heart disease is common in humans, and unfortunately, it’s a condition that impacts our canine friends, as well.Īpproximately 10 percent of dogs seen in a typical primary care veterinary clinic have heart disease ( 1 ).
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