6/30/2023 0 Comments Afib vs a flutter![]() ![]() Ablation of this rhythm targets a critical portion of the circuit know as the cavotricuspid isthmus (CTI) it is to this area bounded by the tricuspid valve and the inferior vena cava (IVC) that a linear ablation lesion can be delivered with successful interruption and termination of the circuit. ![]() Animated illustration of the electrical circuit in the right atrium during typical atrial flutter. Conditions that lead to right-sided heart dilation and increased pressure can increase the incidence of this rhythm disturbance (right-sided heart failure, pulmonary hypertension, COPD, hypertension, obesity, tricuspid or pulmonary stenosis).įigure 1. It can occur in patients with no structural heart disease (lone atrial flutter), but is more likely in those with a history of prior cardiac surgery, congestive heart failure, or congenital heart disease. The heartbeat on exam is typically fast, but with medications, it can be slow with either a regular or irregular pulse.Ītrial flutter is the result of a rapid electrical circuit localized to the top right heart chamber, the right atrium. This electrical circuit has been extensively mapped using electrophysiology-guided catheter mapping techniques. ![]() The atria can contract anywhere from 250-400 beats per minute, with the AV node serving as the “traffic control” preventing 1 to 1 conduction to the ventricles. Atrial flutter, another type of supraventricular tachycardia, produces a heart rhythm with typically more atrial contractions than ventricular beats. ![]()
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