A few days ago, I met a young woman who came to the clinic with an abnormal ECG at work indicating “accelerated atrial voluntary rhythm”. What is the cause and does it need to be treated? Today, we will give you a general introduction to atrial autonomic rhythm. 1. What is accelerated atrial voluntary rhythm? Accelerated atrial voluntary rhythm is also called non-paroxysmal atrial tachycardia, accelerated atrial fugitive rhythm, accelerated atrial self-rhythm, etc. Accelerated atrial autonomic rhythm is a condition commonly associated with organic heart disease involving the atria, usually without obvious symptoms and with a heart rate of 60 to 140 beats/min without significant increase. 2.What are the ECG characteristics? (1) Three or more consecutive P′ waves (non-normal sinus P waves), the morphology of P′ waves is different from sinus P waves. (2) P′ wave frequency is 60-140 beats/min, with a neat rhythm. (3) P′-R interval >0.12s. (4) QRS wave group is the same as sinus. (5) Not accompanied or accompanied by sinus competition. 3.What are the reasons for the appearance of atrial rhythm? (1) Heart disease: Accelerated atrial autonomic rhythm is commonly associated with organic heart disease involving the atria, such as rheumatic heart disease, chronic pulmonary heart disease, pulmonary infection, emphysema, coronary heart disease, myocardial infarction, myocarditis, post cardiac surgery, digitalis toxicity and systemic infection. (2) If the above disease factors are ruled out then it is most likely due to underdevelopment or lifestyle effects: it is entirely possible for young people to have sinus node function that is not fully developed. On the other hand, a poor lifestyle such as tobacco, alcohol, tea and coffee, coupled with factors such as staying up late and mental stress, can lead to autonomic dysfunction, which may result in similar arrhythmias. 4, how to treat and prevent (1) first need to rule out the possibility of disease: it is recommended that you can further improve the lung CT, dynamic ECG, cardiac ultrasound, and esophageal electrophysiological examination. It is also recommended that blood be drawn to check thyroid function and electrolytes. If there is a diagnosis of a related disease then treatment of the cause should be done and treatment of the disease will improve the arrhythmia. The prognosis for accelerated atrial voluntary rhythm itself is good. (2) If it is a young group, no congenital heart disease, no hereditary heart disease, no clinical symptoms, no obvious high-risk factors, most of them belong to the first type, do not worry too much, atrial autonomic rhythm has almost no effect on the heart function, no need to be nervous. It is possible that it will get better slowly and without medication. (3) For those who have a bad lifestyle. It is still important to advise such patients to avoid bad lifestyle, ensure rest, proper exercise and avoid excessive stress.