If the patient consciously holds his breath is related to the heart, the specific reasons are as follows: 1, for example, the patient has coronary atherosclerotic heart disease, myocarditis, pericarditis, hypertrophic obstructive cardiomyopathy, or heart valve disease, hypertensive heart disease, there will be coronary artery of the heart ischemia, stenosis, spasm and other conditions occur, once the above situation, the patient will appear chest tightness, shortness of breath, breath-holding and other clinical 2. Patients with respiratory system diseases, such as chronic bronchitis, bronchiectasis, chronic pulmonary heart disease or pulmonary hypertension, may also experience breath-holding symptoms. 3. Breath-holding symptoms may also occur when the patient has certain endocrine metabolic disorders, such as imbalance in thyroid function.