The main manifestations of organ failure in the elderly are as follows: 1. Brain failure, patients may experience a decline in the level and scope of consciousness, loss of motor, sensory, language and cognitive abilities, medically known as vegetative state. 2. Heart failure, patients may experience exertional dyspnea, chest tightness, air compulsion, telescopic breathing, jugular venous anger, swelling of both lower limbs, etc. 3. In kidney failure, patients may show symptoms such as oliguria, anuria, poor appetite, weakness, general edema, etc., and often need hemodialysis treatment. 5, digestive organ failure, patients may show symptoms such as abdominal distension, poor appetite, diarrhea, gastrointestinal bleeding, etc. Sometimes very critical elderly patients may also develop systemic multi-organ failure, and the mortality rate is extremely high.