The above-mentioned indications don`t imply heart failure, however they signal that it`s important to consult a doctor. Besides physical examination of the patient, echocardiogram must also be carried out. If the echo determines a low blood percentage, which leaves the heart during the left ventricle contracts, it indicates that the muscle is hurt. Other troubling indications, signifying heart failure, are: the swelling of the organ and heart valve malfunction.