Long-term ambulatory work, can not be separated from the computer more and more people, often a sitting is three or four hours, for many people are a daily routine. After sitting for a long time if there is chest pain, suffocating, and increasingly serious, do not have “rest for a while on the idea that it’s okay”. Don’t hesitate to call “120” immediately! Long-term sedentary can cause the blood in the leg veins to stagnate, clot and form thrombus, when the thrombus reaches the pulmonary artery vessels may form a pulmonary embolism, if not timely treatment, will endanger life. The young man died suddenly from chest pain after sitting for a long time They recently saw a young patient. This patient has been working for a long time, often sitting for three or four hours. A few days ago, he felt swelling and discomfort in his left leg after work, so he got up and moved around a bit, but he had chest pain, and then he felt an obvious breathlessness, and he couldn’t breathe, and it was getting heavier and heavier, so he was sent to the emergency room by his colleagues. The doctor suspected that the patient was suffering from lower limb venous thrombosis and pulmonary embolism, and sent him to the CT room to confirm the diagnosis; the CT found that the main trunk and branches of the patient’s pulmonary artery were blocked by blood clots, and the diagnosis was established, but when the patient was ready to be transported after the examination, his blood pressure dropped and he rapidly went into cardiac arrest. How does pulmonary embolism occur? Pulmonary embolism is caused by the blockage of arterial blood vessels in the lungs, causing the blood in the lungs to fail to circulate normally and the blood cannot exchange gases in the lungs. In other words, the oxygen inhaled cannot be brought to the whole body, and the carbon dioxide produced by the whole body metabolism cannot be expelled from the body through the lungs, which is the same as being unable to breathe when the trachea is pinched. If all the blood vessels of the pulmonary artery are blocked at once, it is very difficult to save the patient. Of course, the degree of arterial embolism varies. If only a small number of small branches of the artery are blocked, there may be no symptoms, but if more of them are blocked, chest pain will appear, and if more of them are blocked, there will be suffocation and lack of breath. If the artery trunk and large branches are blocked, it will be more serious, and timely unblocking of the blocked blood vessels will be the key factor for successful resuscitation. The causes of pulmonary artery embolism are various, but the most common is caused by thrombosis in the veins of the legs. Long-term sedentary can cause blood in the leg veins to pool and clot and form thrombus; thrombus blocking the veins can cause symptoms such as swelling in the lower limbs, but sometimes the swelling is less obvious and unnoticed, because there may be multiple veins and drainage is still possible. The thrombus in the vein can be dislodged by activity squeezing, blood flow flushing and other factors, and the dislodged thrombus will be carried to the pulmonary artery with the blood flow, thus causing pulmonary embolism. The patient mentioned above was caused by sedentary lower limb vein thrombosis, and his leg swelled up. What should I do if I have chest pain and suffocation after sitting for a long time, and it is getting more and more serious? Don’t have the idea of “it will be fine if you rest for a while”, but call “120” immediately! After the doctor diagnoses that the chest pain and suffocation are caused by pulmonary embolism, while trying to maintain the heart rhythm, blood pressure and blood oxygen level, he/she will immediately take corresponding measures to unblock the blocked blood vessels so that the main pulmonary artery and its large branches can be reopened, thus saving the patient’s life. In addition, to prevent further pulmonary embolism caused by further dislodgment of other thrombi in the veins of the lower extremities, a filter (somewhat like placing a fish-stopping net in a small stream) may be placed in the inferior vena cava to block large thrombi that can cause severe pulmonary embolism.