The symptoms of the elderly before death: i. Inability to eat, increased bowel movements, and reliance on fluids to maintain nutrition. Second, in terms of mental health, confusion, drowsiness, shallow coma, and slowly deep coma. In terms of respiration, rapid breathing and difficulty in breathing at the beginning, slowly slowing down, deep breathing, and a gradual decrease in blood oxygen saturation. In terms of heart rate, the heart rate increases compensatingly at first, and then gradually decreases, eventually leading to zero heart rate. V. Blood pressure gradually decreases, the skin is cold and clammy, and there is skin floridness, eventually to the point where blood pressure cannot be measured.