Important signs of left heart failure are pulmonary and cardiac signs, there will be bruising on the lungs, such as bilateral lung rales, low breath sounds, rales are often characterized as mobile rales, which are evident when the patient is lying on the left side and on the right side, and pneumonia rales are more fixed. Cardiac signs In addition to the primary cardiac signs, heart failure-related P2 hyperactivity, muffled heart sounds, and third heart sounds can be heard in heart failure, but this is often not typical. Diagnosis of heart failure with signs is only one aspect, the most important thing is based on the patient’s symptoms, asymptomatic not heart failure, with symptoms and then do the relevant tests, such as ultrasound, BNP and other tests to make a diagnosis for the patient. For cardiac symptoms and signs and then give the appropriate treatment, acute left heart failure is the most serious, but also the most common type of heart failure, first of all give the patient to reduce the cardiac load of the treatment, tachycardia used most, the patient has been tachycardia, if the patient can urinate 1-3 times, the symptom can be relieved, the lungs can be reduced rales, the cardiac related symptoms will also be improved.