Heart Disease
Heart disease in pets can result from or be worsened by other systemic conditions, particularly hypertension and hyperthyroidism. High blood pressure damages heart muscle tissue, leading to scarring and inflexibility -- a problem especially common in cats. Untreated hyperthyroidism is a major driver of feline cardiac changes.
Key Facts
- Hypertension-related heart damage involves scarring and loss of muscle flexibility
- Cats are particularly susceptible to hypertension-induced cardiac damage
- Untreated hyperthyroidism can progress to heart failure
- Timely treatment of the underlying cause can prevent cardiac complications
- Species: dogs and cats (cats especially at risk from thyroid-related causes)
Connections (26)
Related Conditions
FATE is often the first sign of previously undiagnosed heart disease
Structural heart disease is a common underlying cause of pathological arrhythmias in pets.
Underlying structural heart disease is the most common cause of the atrial stretch required for this arrhythmia to occur in pets.
Cardiomyopathy is the most common form of heart disease in cats
CKD causes hypertension, which in turn damages the heart.
— most common identifiable cause
CHF is the end-stage of many cardiac conditions
— must rule out cardiac causes
Heartworms cause progressive cardiac and pulmonary damage
High blood pressure directly damages heart tissue over time.
Untreated thyroid excess causes cardiac changes that can progress to heart failure and sudden death.
Heart failure can cause hypothermia
Bacteria can spread from infected teeth to the heart
Organs in the pericardial sac can impair heart function and mimic primary cardiac disease.
— cardiogenic cause
— congenital cardiac condition
Symptoms
Often co-occurs when blindness and cardiac damage share a hypertension origin.
Congestive heart failure causes fluid buildup and breathing difficulty
Murmurs prompt investigation for underlying cardiac conditions
Cardiac arrhythmias are a common cause of syncope
Treatments
Medications
Diagnostics
Cats with heart disease should be screened.
Central diagnostic for all cardiac conditions
Electrocardiograms help veterinarians assess the electrical consequences and rhythm disturbances caused by structural heart disease.