Estella Pulse Generators - BIOTRONIK USA - News

Estella Pulse Generators Technical Manual 13917.1.2.3 DVIThe DVI mode is clearly indicated if• AV sequential contraction is necessary due to symptomaticbradycardia and slow atrial rate, and/or• a pacemaker syndrome has already been documented.The DVI mode is conditionally indicated for• frequent supraventricular arrhythmia in which a combination ofpacing and medication has proved therapeutically effective, and/or• the presence of a bradycardia-tachycardia syndrome, presumingthat setting the atrial rate and the AV interval with or withoutaccompanying medication stops or prevents supraventriculararrhythmia.The DVI mode is contraindicated for• frequent or persistent supraventricular tachyarrhythmia, includingatrial fibrillation or flutter.17.1.3 Dual Chamber Modes17.1.3.1 VDDThe VDD mode is clearly indicated for• ventricular pacing when adequate atrial rates and adequateintracavitary complexes are present. The indication includes thepresence of complete AV block when--the atrial contribution is necessary for hemodynamicoptimization, and/or--a pacemaker syndrome has already occurred or is expected.The VDD mode is conditionally indicated for• patients with normal sinus rhythms and normal AV conduction, butwho intermittently need ventricular pacing.The VDD mode is contraindicated for• frequent or persistent supraventricular tachyarrhythmia, includingatrial fibrillation or flutter, and/or• inadequate intra-atrial complexes that do not permit safe sensing,and/or• intact retrograde conduction.