If the chest tightness and shortness of breath caused by serious organic heart disease may lead to death. If the chest tightness and shortness of breath are caused by non-organic heart disease, it usually does not matter and will not lead to death. 1. Because chest tightness and shortness of breath are often seen in heart disease, organic heart disease and non-organic heart disease may cause chest tightness and shortness of breath. If there is only chest tightness and shortness of breath, and there are no other accompanying symptoms, and the symptoms are not further aggravated, and there is relief after a simple rest, it is generally not important. However, if symptoms of chest tightness and shortness of breath occur frequently, it is recommended that you should go to the hospital to improve the relevant examinations and to clarify the cause of the disease. The cause of the disease. 2. Organic heart disease can be seen in arrhythmia, coronary heart disease, angina, etc. Non-organic heart disease can be seen in cardiac neurosis, mostly due to anxiety and mental tension. It is recommended that patients should consult a doctor in time if they feel unwell, and should not be negligent or discouraged, so as not to delay their condition.