Abstract
After implantation of a permanent pacemaker, patients may experience severe symptoms of dyspnea, palpitations, malaise, and syncope resulting from pacemaker syndrome. Although pacemaker syndrome is most often ascribed to the loss of atrioventricular (A-V) synchrony, more recent data may also implicate left ventricular dysynchrony caused by right ventricular pacing. Previous studies have not shown reductions in mortality or stroke with rate-modulated dual-chamber (DDDR) pacing as compared to ventricular-based (VVI) pacing. The benefits in A-V sequential pacing with the DDDR mode are likely mitigated by the interventricular (V-V) dysynchrony imposed by the high percentage of ventricular pacing commonly seen in the DDDR mode. Programming DDDR pacemakers to encourage intrinsic A-V conduction and reduce right ventricular pacing will likely decrease heart failure and pacemaker syndrome. Studies are currently ongoing to address these questions.
Original language | English (US) |
---|---|
Pages (from-to) | 195-200 |
Number of pages | 6 |
Journal | Indian Pacing and Electrophysiology Journal |
Volume | 4 |
Issue number | 4 |
State | Published - Oct 1 2004 |
Keywords
- A-V = atriovetricular
- AAI = single-chamber atrial
- AF = atrial fibrillation
- DDDR = rate modulated dual-chamber
- LBBB - left bundle branch block
- LV = left ventricular
- LVEF = left ventricular ejection fraction
- RV = right ventricular
- SND = sinus node dysfunction
- V-A = ventricular-atrial
- V-V = interventricular
- VVI = ventricular-based
- VVIR = rate modulated ventricular-based
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Physiology (medical)