Heart congestion is called chest tightness in medical terminology. There are more causes of this symptom, including coronary heart disease, arrhythmia, gastroesophageal reflux, psychosomatic factors, etc. It is judged according to the accompanying symptoms and medical history. The diseases that may be associated with heart congestion are as follows: 1. Coronary heart disease: Coronary heart disease (angina pectoris, heart attack, can cause myocardial ischemia and hypoxia, causing a feeling of chest tightness. Coronary heart disease is related to exertion, emotional excitement, etc., and can be relieved by rest or nitroglycerin inhalation. Cardiac enzymes, troponin, electrocardiogram, echocardiogram, coronary CT, cardiac MRI or angiography can be used to clearly exclude cardiovascular problems. 2, arrhythmia: When arrhythmia occurs, such as atrial fibrillation, atrial flutter, frequent premature beats, etc. due to tachycardia or arrhythmia affects the effective contraction of the heart muscle, which can lead to the cardiac output being affected and insufficient blood supply to the heart muscle, causing a feeling of chest tightness. 3, gastroesophageal reflux disease: gastroesophageal reflux disease occurs when the reflux stimulates the esophagus, which can cause chest pain, sometimes similar to angina pectoris. It can be accompanied by reflux and a feeling of heartburn. Gastrointestinal disorders are affected by eating and antacid therapy, etc. It can be clarified by gastrointestinal endoscopy or ultrasound and other examinations. 4. Psychosomatic factors: cardiac neurosis and psychological factors. Cardiac neurosis and psychological factors can be considered under the circumstance that no clear cause can be found after careful examination. If you find that your heart is blocked, you must first exclude cardiovascular system diseases, because heart attack may lead to death if not handled in time. Regardless of the cause of the blocked heart, the patient needs to go to the hospital as soon as possible to rule out critical illnesses.