This foundational preclinical study challenges the circus movement theory, proposing instead that auricular arrhythmias originate from a single ectopic focus depending on the discharge rate.
Answers are grounded in this paper and cite their sources.
Challenges circus movement theory in auricular arrhythmias; leaves open single ectopic focus mechanism in humans.
The four auricular arrhythmias, premature systoles, paroxysmal tachycardia, flutter, and fibrillation, have been investigated in over 200 dogs by three methods: (1) high speed cinematography, (2) cathode-ray oscillography, and (3) multiple-channel electrocardiography. The hitherto unexplored body of the left auricle has been surgically exposed and thoroughly studied. Results indicate that all four arrhythmias are of unitary origin and may occur from one ectopic focus. The resulting arrhythmia depends largely upon the rate of discharge from that focus. There is no circus movement. Corroborative observations have been made on the arrhythmias in man. This conception of the auricular arrhythmias simplifies the understanding of their mechanism.
No takes yet. Share an insight, caveat, or question.
Prinzmetal et al. (1950) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: