Poor cardiopulmonary function includes poor heart function and poor lung function. It may manifest as rapid heart rate, high blood pressure, cyanosis or dyspnea, chest tightness and panic, weakness, edema, dizziness, syncope, etc. Poor cardiopulmonary function is commonly seen in the late stages of various long-term chronic cardiopulmonary diseases, where a series of manifestations occur as a result of damage to cardiopulmonary function due to prolonged disease. When cardiopulmonary function is poor, heart pumping function becomes poor, tissue and organ perfusion is insufficient, circulation is stagnant, pulmonary ventilation and air exchange function becomes poor, resulting in hypoxemia and carbon dioxide retention, which affects multiple systems throughout the body, leading to various symptoms, mainly in the following areas: heart, increased heart rate, palpitations, cyanosis, weakness, limited movement, increased blood pressure, or in severe cases, increased blood pressure In the respiratory aspect, shortness of breath, dyspnea, coughing, coughing sputum, and in severe cases, triple concave sign, tidal breathing, coughing pink frothy sputum, etc. In the nervous system, dizziness, syncope, and in severe cases, mental confusion, mania, drowsiness, etc. In addition, poor cardiopulmonary function may also appear oliguria, loss of appetite, nausea, vomiting, kidney function, and Liver insufficiency, etc. The clinical manifestations of poor cardiopulmonary function are mainly dyspnea, weakness, edema, dizziness, syncope, etc. When the above symptoms appear, early identification and timely hospital consultation are required.