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The present study was performed in order to have better understanding of the human circadian system. Two hypotheses concerning with the human circadian system have been advanced. One is a two self-sustained oscillator hypothesis, and the other is a two process hypothesis. Both hypotheses are based on a phenomenon called internal desynchronization. A major(More)
A 32-year-old man underwent catheter ablation of an orthodromic atrioventricular reentrant tachycardia. The sinus rhythm electrocardiogram exhibited a normal PQ interval and no delta waves, but atrial pacing produced a prolonged PQ interval and wide QRS morphology with right bundle-branch block due to antegrade accessory pathway (AP) conduction. During the(More)
A 46-year-old man after a tricuspid valve replacement due to traumatic severe tricuspid regurgitation developed cavotricuspid isthmus-dependent counterclockwise atrial flutter. During a linear ablation using a contact force-sensing irrigated ablation catheter, the flutter could be terminated by a radiofrequency application within a deep pouch just below the(More)
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