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KMID : 1011920200210010014
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International Journal of Arrhythmia
2020 Volume.21 No. 1 p.14 ~ p.14
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Relationship between right ventricular pacing and non-sustained ventricular arrhythmias in patients with dual-chamber pacemaker and normal range left ventricular ejection fraction
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El-Zein Rayan S.
Amin Anish K.
Billakanty Sreedhar R.
Fu Eugene Y.
Nichols Allan J.
Nelson Steven D.
Kleman James M.
Kidwell Gregory A.
Chopra Nagesh
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Abstract
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Background: Right ventricular pacing (RVP) increases heart failure, AF, and death rates in pacemaker patients and ventricular arrhythmias (VAs) in defibrillator patients. However, the impact of RVP on VAs burden and its clinical significance in pacemaker patients with normal range LVEF of?>?50?55% remains unknown. We sought to evaluate the relationship of RVP and VAs and its clinical impact in a pacemaker patient population.
Methods: Records of 105 patients who underwent de novo dual-chamber pacemaker implant or a generator change (Medtronic™ or Boston Scientific™) for AV block and sinus node disease at a tertiary care center between September 1, 2015, and September 1, 2016, were retrospectively reviewed.
Results: Data from 105 patients (51% females, mean age 76?±?1 years, mean LVEF 61?±?0.7%) without history of VAs (98.2%) were reviewed over 1044?±?23 days. Dependent patients (100% RVP) exhibited the lowest VAs burden when compared to??1/h of PVC runs and increasing PVC runs/h were significantly associated with hospitalization (p?=?0.04) and all-cause mortality (p?=?0.03), respectively.
Conclusions: In pacemaker patients with normal range LVEF (>?50?55%), 100% RVP is associated with the lowest burden of NSVT. Furthermore, patients with?
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KEYWORD
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Right ventricular pacing, Non-sustained ventricular arrhythmias, Dual-chamber pacemaker, Premature ventricular complex
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