Document Detail


Does RV lead positioning provide additional benefit to cardiac resynchronization therapy in patients with advanced heart failure?
MedLine Citation:
PMID:  17038138     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND AND OBJECTIVES: The left ventricular (LV) stimulation site is currently recommended to position the lead at the lateral wall. However, little is known as to whether right ventricular (RV) lead positioning is also important for cardiac resynchronization therapy. This study compared the acute hemodynamic response to biventricular pacing (BiV) at two different RV stimulation sites: RV high septum (RVHS) and RV apex (RVA). METHODS AND RESULTS: Using micro-manometer-tipped catheter, LV pressure was measured during BiV pacing at RV (RVA or RVHS) and LV free wall in 33 patients. Changes in LV dP/dt(max) and dP/dt(min) from baseline were compared between RVA and RVHS. BiV pacing increased dP/dt(max) by 30.3 +/- 1.2% in RVHS and by 33.3 +/- 1.7% in RVA (P = n.s.), and decreased dP/dt(min) by 11.4 +/- 0.7% in RVHS and by 13.0 +/- 1.0% in RVA (P = n.s.). To explore the optimal combination of RV and LV stimulation sites, we assessed separately the role of RV positioning with LV pacing at anterolateral (AL), lateral (LAT), or posterolateral (PL) segment. When the LV was paced at AL or LAT, the increase in dP/dt(max) with RVHS pacing was smaller than that with RVA pacing (AL: 12.2 +/- 2.2% vs 19.3 +/- 2.1%, P < 0.05; LAT: 22.0 +/- 2.7% vs 28.5 +/- 2.2%, P < 0.05). There was no difference in dP/dt(min) between RVHS- and RVA pacing in individual LV segments. CONCLUSIONS: RVHS stimulation has no overall advantage as an alternative stimulation site for RVA during BiV pacing. RVHS was equivalent with RVA in combination with the PL LV site, while RVA was superior to RVHS in combination with AL or LAT LV site.
Authors:
Masayuki Shimano; Yasuya Inden; Yukihiko Yoshida; Yukiomi Tsuji; Naoya Tsuboi; Taro Okada; Takumi Yamada; Yoshimasa Murakami; Yasunobu Takada; Haruo Hirayama; Toyoaki Murohara
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  29     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-10-13     Completed Date:  2007-04-26     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1069-74     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan. mshimano@med.nagoya-u.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Cardiac Pacing, Artificial / methods*
Disease Progression
Female
Heart Failure / therapy*
Heart Ventricles*
Humans
Male
Pacemaker, Artificial*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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