What are the symptoms of acute left ventricular failure?

Patients with acute left heart failure should be sent to hospital for treatment in time. Doctors will treat them with cardiotonic diuretic and vasodilator drugs. Sedatives and oxygen should also be given to the patients. It is best to let the patients take a semi-sitting position. To let the patients rest more, for patients with severe symptoms, they can be restrained with armbands.