Longstanding persistent accelerated idioatrial rhythm: Benign sinus node-like rhythm or insidious rhythm?


INTRODUCTION:Detailed description of longstanding persistent accelerated idioatrial rhythm (AIAR) is lacking. This observational study investigated the clinical manifestations, electrophysiological characteristics, diagnosis, treatment, and prognosis of this unusual arrhythmia. METHODS AND RESULTS:Fifteen patients (11 males; average age 25.9 ± 15.7 years) suspected with longstanding persistent AIAR were enrolled in our study. All patients had electrocardiogram (ECG), 24-hour Holter monitoring, isoproterenol provocation test, echocardiogram, and exercise treadmill test. Electrophysiological study (EPS) and catheter ablation were performed if necessary. The above noninvasive tests would be repeated during follow-up. Among the patients, 10 were asymptomatic; 5 had concomitant paroxysmal atrial tachycardia. Two asymptomatic patients had impaired left ventricular function. AIAR was observed throughout 24-hour Holter monitoring, showing chronotropic profile similar to sinus rhythm (SR). Such AIAR exhibited competitive property with SR when provoked by isoproterenol or during treadmill test. Twelve patients had EPS and 8 of them had successful ablation to eliminate AIAR. During a medium follow-up of 3.7 years, all patients were in well clinical course and preserved left ventricular dysfunction, and 3 patients spontaneously reverted to SR at 10-year follow-up. CONCLUSIONS:Longstanding persistent AIAR is an unusual entity of atrial arrhythmias and in most situations a benign rhythm requiring no treatment. The clinical course will be worsened when AIAR develops rapid focal firing, is associated with focal atrial tachycardias or results in tachycardia-mediated cardiomyopathy, but can be resolved via catheter ablation.


Liu H,Zhu C,Yang B,Ju W,Chen H,Zhang F,Gu K,Li M,Kojodjojo P,Chen M




Has Abstract


2017-08-01 00:00:00












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    pub_type: 临床试验,杂志文章,多中心研究,随机对照试验


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    pub_type: 杂志文章


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