Heart Murmur In Cats Symptoms. There are no physical symptoms of heart murmurs since they can only be heard using a stethoscope. The heart murmur is caused by increased blood flow to the heart, but will have no other consequences.
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Signs of heartworm infestation in cats include coughing, labored or rapid breathing (known as dyspnea), and vomiting. The heart murmur is caused by increased blood flow to the heart, but will have no other consequences. Irregular heartbeat (arrhythmia) poor growth (congenital heart disease) swollen abdomen.
The grade of murmur does not necessarily mean heart disease is more or less severe, or even present.
The prognosis depends on the cause of the heart murmur. Loss of appetite (anorexia) weight loss; Heart murmur occurs when extra heart vibrations are produced, which lead to abnormal heart sounds. The most common symptoms that are observed with a cat that has a clinically significant heart murmur are poor appetite, weight loss (or stunted growth in a kitten), breathing problems, pale gums, lethargy, or weakness.