[Avoidance of ventricular pacing in patients with sinus node disease or intermittent AV block].
In patients with frequent right ventricular stimulation, worsening of heart failure and atrial fibrillation may occur. Avoidance of unnecessary right ventricular pacing is a major requirement for pacemaker selection and programming in patients with sinus node disease or intermittent AV block. In dual chamber pacemakers this goal can be achieved by programming a long AV delay or an AV delay hysteresis. Algorithms that allow AAI pacing in a dual chamber pacing mode and change to DDD mode in case of high degree AV block are a new attempt to avoid unnecessary right ventricular pacing. The article describes various strategies to avoid unnecessary ventricular pacing and discusses their advantages and disadvantages.
Wiegand
U K H
UK
Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Medizinische Klinik II, Ratzeburger Allee 160, 23538 Lübeck, Germany. uwe.wiegand@medinf.mu-luebeck.de
D000465:Algorithms; D054537:Atrioventricular Block / Q000503:physiopathology / Q000628:therapy*; D002304:Cardiac Pacing, Artificial; D000075202:Contraindications; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D010138:Pacemaker, Artificial; D011474:Prosthesis Design; D012804:Sick Sinus Syndrome / Q000503:physiopathology / Q000628:therapy*; D012984:Software