If the patient has an accelerated heartbeat, accompanied by panic and chest tightness, there are several factors as follows: 1. The most common factor is cardiogenic disease, when the heart has organic lesions, such as coronary atherosclerotic heart disease, unstable angina pectoris or arrhythmia type, the patient will have an accelerated heartbeat accompanied by palpitations, chest tightness, shortness of breath and other clinical symptoms due to insufficient blood supply and oxygen supply capacity of the heart muscle. 2. For example, patients with acute lung infection, large pneumothorax or pleural effusion may experience varying degrees of oxygen deprivation, which may lead to a certain degree of respiratory insufficiency, and patients may also experience an accelerated heartbeat, accompanied by panic and chest tightness. 3.