Because the AV node is intermittently (not regularly) refractory ... showing atrial fibrillation will have no visible P waves and an irregularly irregular QRS complex. The ventricular rate ...

Cardiac radioablation is an emerging treatment option for patients suffering from refractory ventricular ... by multiple episodes of VT or ventricular fibrillation occurring in a short period.

Which intervention is appropriate for definitive therapy in a patient with atrial fibrillation with a fast ventricular response refractory to high doses of AV blocking agents and that has failed a ...

Prolonging this phase increases the refractory period (a "pause ... such as recurrent arrhythmias like atrial fibrillation, atrial flutter, and ventricular tachycardia. Catheters are inserted ...