Accelerated atrial escape heart rate, also known as nonparoxysmal atrial tachycardia, refers to increased autoregulation of ectopic pacing points in the atria or vena cava tissue, causing an active atrial rhythm, formed mainly by reduced autoregulation of the sinus node pacing points. The rhythm of the atria seen on the ECG is mostly around 60-100 beats/min, and the morphology, timing, and amplitude of the QRS wave groups are basically normal. If there is an accelerated atrial fugitive heart rate without sinus rhythm competition, it means that the autoregulation of the sinus node is reduced or suppressed. This condition is mostly seen in organic heart disease, such as coronary artery disease, pathological sinus node syndrome, etc. It can also be seen in subnormal individuals, or due to autonomic regulation disorders.