3)Atrial fibrillation Mechanism: a very high frequency impulse coming from the atrial ectopic point, in multl-reenti Three inconsistence: ventricular rhythm SI intensit Heart rate; pulse• 3) Atrial fibrillation: Mechanism: a very high frequency impulse coming from the atrial ectopic point, in multi-reentry Three inconsistence: ventricular rhythm S1 intensity Heart rate; pulse