Tell me about emphysema.

Definition: Very common. Severe heart failure will lead to reduced blood flow and reduce the amount of oxygen obtained by various tissues of the body. At the same time, the decrease of cardiac output can lead to the accumulation of salt and body fluids. Symptoms: deep cough, choking cough, shortness of breath, decreased physical fitness, obvious weight gain or loss, loss of appetite, abdominal distension, hypertension, fatigue, wheezing, depression, and white gums (the above symptoms may also be caused by other diseases). Cause: diseases or defects of cardiac cambium, cardiac conduction system or blood vessels. The conditions leading to heart failure may be congenital or acquired. Diagnosis: Veterinarians can find heart murmurs and hydrops through auscultation, or abnormal pulse through palpation. What's more, they can find heart enlargement and body fluid accumulation through X-ray examination, whether they are infected with heartworms and other important organs through blood and urine examination, or find the size and abnormal structure of the heart through ultrasonic examination. Maintenance: Most patients with heart disease can live a normal life as long as they change their lifestyle slightly. Veterinarians advise heart patients to eat special foods with low salt content. Let it drink a lot of clean water. Demineralized water has high salt content. If you have a water softener at home, it's best to distill it.