The manifestations of the dying elderly: 1. Respiration, which begins with labored breathing, shortness of breath, and difficulty in breathing, slowly becomes shallow and slow breathing, and deep and large breathing. With the change of breathing, the blood oxygen saturation also gradually decreases, from the normal 90% or more slowly and gradually, thus appearing respiratory arrest. 2, heart rate, the beginning is compensatory heart rate increase, with the gradual fatigue of the heart and the aggravation of oxygen deprivation, can appear the gradual decrease of heart rate, eventually leading to zero heartbeat. 3, mental, at first appear drowsy, slowly is shallow coma, and finally in a deep coma state. 4, diet, at first can eat liquid food, and the elderly can eat liquid food. 4. Diet: at first, the patient can eat liquid food, but slowly, he cannot eat, and can only rely on fluids to maintain nutrition.