The main manifestations of heart failure in the elderly before death are chest tightness, shortness of breath, severe paroxysmal dyspnea at night, pleural fluid, ascites, etc. Left heart failure is predominant, mainly manifesting as dyspnea, severe hypoxia, cyanosis of the lips and mouth, respiratory failure, and even indifference to consciousness. Right heart failure is predominant, mainly manifesting as edema, often with severe generalized edema, pulmonary hypertension, severe lip and mouth cyanosis, also respiratory failure, severe carbon dioxide retention, and drowsiness and confusion. Total heart failure can lead to stasis of blood in the body circulation, and there will be bilateral lower limb edema, jugular vein anger, pleural fluid, ascites, liver enlargement, etc. Stasis of blood in the gastrointestinal tract is more serious and affects the digestive function, with manifestations of abdominal distension, decreased appetite, malnutrition, hypoproteinemia, and anemia.