What is the cause of low air pressure, chest tightness and shortness of breath?

Under normal circumstances, when the air pressure is low, patients will have clinical symptoms and reactions of chest tightness. There are physiological reasons and pathological factors. The physiological reason is that when the air pressure is low, the air is thinner, the oxygen content is relatively low, and the oxygen concentration is relatively low. At this time, patients will suffer from varying degrees of symptoms due to decreased blood oxygen saturation and insufficient oxygen partial pressure in the body. The clinical symptoms of chest tightness and shortness of breath are normal phenomena if the patient consciously relieves and improves them by improving the air pressure. However, if the patient has symptoms of chest tightness for a long time, it means that the compensatory function of the heart is insufficient, or the patient has chronic heart failure or chronic pulmonary failure, and will have obvious chest tightness and shortness of breath when the blood pressure and air pressure are low, which is and Insufficient oxygen and blood supply to myocardial cells is directly related. If the chest tightness does not relieve for a long time, you must actively go to the hospital for treatment.