Suddenly rapid heartbeat and breathlessness consider the following situations: 1. To exclude whether there is a respiratory disease, such as an acute attack of asthma. Patients with asthma attacks usually appear in the presence of special irritating odors, such as chest tightness, shortness of breath, wheezing, coughing, and discontinuous speech, at this time to remove the trigger, you can use some drugs to relieve airway spasm treatment, such as salbutamol inhalation. 2, seen in patients with heart disease, such as patients with coronary heart disease, angina pectoris, acute attacks of heart failure, the patient will suddenly appear accelerated heartbeat, shortness of breath, This is the first time that the patient has been diagnosed and treated. 3, seen in functional diseases, mostly in young women this type of patients, usually in the case of emotional excitement suddenly appear accelerated heartbeat, gasping for air, it is recommended that the patient breathe deeply, change their lifestyle, pay attention to rest, you can open the window to relieve symptoms.