Pulse decompensation is when the heart rate is greater than the pulse rate. The rhythm of the pulse reflects the rhythm of the heart. In normal people, the pulse rhythm is regular, but in those with sinus arrhythmia, the pulse rhythm may change with breathing. It increases during inspiration and slows down during expiration. Patients with various arrhythmias can affect the pulse rhythm, such as those with atrial fibrillation whose pulse rhythm is absolutely irregular. Atrial fibrillation (AF), this arrhythmia can have “three inconsistencies”, i.e., inconsistent heart sounds, inconsistent fast and slow, and inconsistent with the pulse (pulse dehiscence). Propranolol, verapamil, and cardiac glycosides such as cetiran can be used for treatment. In general, the causes of pulse dehiscence are the following: 1, various organic heart disease such as congenital heart disease, coronary heart disease, heart valve disease, myocarditis, pericarditis, cardiomyopathy, endocarditis, etc., due to the heart’s sinus node and conduction system by lesions, it is easy to occur arrhythmia, so arrhythmia is seen in the recognition of almost all types of heart disease. 2, neurological and endocrine system regulation disorders, water and electrolyte imbalance Cardiac neurological and endocrine system regulation disorders, ion balance imbalance of the heart, etc.; various causes other than cardiac factors caused by hypoxemia-mediated myocardial hypoxia, systemic and cardiac local acid-base balance regulation disorders, etc., have the necessary basis for the ion and metabolism of arrhythmia, forming the condition factors of arrhythmia, and thus often The occurrence of arrhythmia is often triggered. A variety of drugs can cause arrhythmias, such as non-potassium-protective diuretics, digitalis, epinephrine, norepinephrine, isoprenaline, dopamine, dobutamine, amrinone and milrinone. Of particular note is the fact that various antiarrhythmic drugs either prevent or terminate arrhythmias by altering ion channels, or stabilizing cell membranes, or altering the heart’s nonresponse period, or acting on cardiac receptors. However, anti-arrhythmic drugs do not have arrhythmogenic effects themselves and can mediate arrhythmias and even death if applied improperly. 4, systemic or other systemic diseases such as neurological diseases, endocrine system diseases, metabolic diseases, trauma, surgery, cardiac catheterization, etc. can cause the occurrence of arrhythmias. 5.Normal physiological characteristics Sinus tachycardia or pre-term contraction can occur in emotional excitement, shock, depression, alcohol consumption, strong coffee, etc. Healthy elderly people are more likely to have arrhythmias than young people. Generally speaking, arrhythmias occur throughout a person’s life.