Document Detail


Advantage of right ventricular outflow tract pacing on cardiac function and coronary circulation in comparison with right ventricular apex pacing.
MedLine Citation:
PMID:  20800440     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
BACKGROUND: The purpose of this study was to investigate the acute effect of right ventricular outflow tract (RVOT) pacing and right ventricular apex (RVA) pacing on synchronous ventricular activation and coronary flow dynamics.
METHODS: We enrolled 20 consecutive patients who underwent electrophysiologic study. Echocardiographic study including two-dimensional tissue tracking imaging and Doppler guide wire examination was performed during RVOT pacing and RVA pacing.
RESULTS: The improvement of left ventricular radial dyssynchrony (99 ± 12 ms vs. 142 ± 16 ms, P < .001), time-averaged peak velocities of coronary blood flow (54 ± 18 cm/s vs. 47 ± 17 cm/s, P = .007), and coronary microvascular resistance index (2.0 ± 0.8 vs. 2.4 ± 1.1, P = .028) was observed with RVOT pacing compared with RVA pacing.
CONCLUSION: RVOT pacing might provide favorable effects on the left ventricular function and coronary flow dynamics over RVA pacing.
Authors:
Takahshi Yamano; Takashi Kubo; Shigeho Takarada; Kohei Ishibashi; Kenichi Komukai; Takashi Tanimoto; Yasushi Ino; Hironori Kitabata; Kumiko Hirata; Atushi Tanaka; Toshio Imanishi; Takashi Akasaka
Publication Detail:
Type:  Journal Article     Date:  2010-08-30
Journal Detail:
Title:  Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography     Volume:  23     ISSN:  1097-6795     ISO Abbreviation:  J Am Soc Echocardiogr     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8801388     Medline TA:  J Am Soc Echocardiogr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1177-82     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 American Society of Echocardiography. Published by Mosby, Inc. All rights reserved.
Affiliation:
Department of Cardiovascular Medicine, Wakayama Medical University, Wakayama, Japan. akasat@wakayama-med.ac.jp
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