The Prevalence of Apical Wall Motion Abnormalities in Patients with Long-Term Right Ventricular Apical Pacing

Background Long-term right ventricular apical pacing (RVAP) can lead to adverse clinical outcomes. Although left ventricular (LV) dyssynchrony is the major causative factor, other potential mechanisms are not fully understood. We sought to clarify whether RVAP elicits apical wall motion abnormalitie...

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Veröffentlicht in:	Journal of the American Society of Echocardiography 2011-05, Vol.24 (5), p.556-564.e1
Hauptverfasser:	Sato-Iino, Takako, MD, Watanabe, Hiroyuki, MD, Koyama, Takashi, MD, Iino, Kenji, MD, Kosaka, Toshimitsu, MD, Ito, Hiroshi, MD
Format:	Artikel
Sprache:	eng
Schlagworte:	Aged Apical pacing Cardiovascular Female Heart Atria - diagnostic imaging Heart Atria - pathology Heart Ventricles - diagnostic imaging Heart Ventricles - pathology Humans Left ventricular apical wall motion abnormality Left ventricular contractile dysfunction Male Natriuretic Peptide, Brain Pacemaker implantation Prevalence Regional myocardial damage Retrospective Studies Sick Sinus Syndrome - blood Sick Sinus Syndrome - diagnostic imaging Sick Sinus Syndrome - pathology Statistics, Nonparametric Stroke Volume Time Factors Ultrasonography Ventricular Dysfunction, Left - diagnostic imaging Ventricular Dysfunction, Left - pathology Ventricular Dysfunction, Right - diagnostic imaging Ventricular Dysfunction, Right - pathology Ventricular Function, Left
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Zusammenfassung:	Background Long-term right ventricular apical pacing (RVAP) can lead to adverse clinical outcomes. Although left ventricular (LV) dyssynchrony is the major causative factor, other potential mechanisms are not fully understood. We sought to clarify whether RVAP elicits apical wall motion abnormalities that contribute to LV contractile dysfunction. Methods We studied annual echocardiographic data over a 5-year period after pacemaker implantation (PMI) for 74 patients who underwent RVAP. The patients were divided into two groups according to the percentage of ventricular pacing: right ventricular (RV) pacing
ISSN:	0894-7317 1097-6795
DOI:	10.1016/j.echo.2010.12.025