Document Detail

Atrial function during different multisite atrial pacing modalities in patients with bradycardia--tachycardia syndrome.
MedLine Citation:
PMID:  19749477     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Multisite atrial pacing (MAP) was introduced to improve atrial electrical synchrony and prevent recurrence of atrial fibrillation (AF). METHODS AND RESULTS: In the present study there were 57 patients with sinus node disease, AF recurrence and prolonged P-wave on ECG with 2 MAP modalities. In all patients 1 lead was implanted in the coronary sinus (CS) ostium area. In the right atrial appendage (RAA)+CS group (28 patients) the other atrial lead was in the RAA, and in the BB+CS group (29 patients) in the Bachmann's bundle (BB) region. Tissue Doppler was used to register the electromechanical delay (EMD) in the atrial walls and estimate the atrial contraction synchrony. Cardiac output and myocardial performance index did not differ during the 2 MAP modalities. During BB+CS, in comparison with RAA+CS pacing, the peak of the mitral atrial wave occurred earlier (P<0.01), the usual right-left atrial contraction sequence was reversed more frequently (P<0.004), all atrial EMDs except for the lateral left atrium (LA) were shorter (P<0.05), and LA synchrony was greater (P<0.001). CONCLUSIONS: In patients treated with MAP, implanting 1 of the atrial leads in the BB area instead of the RAA has no influence on global cardiac hemodynamics, but does result in earlier LA contraction, and reversal of the typical right-left atrial contraction sequence, as well as providing greater LA contraction synchrony.
Ewa Lewicka-Nowak; Alicja Dabrowska-Kugacka; Piotr Rucinski; Dariusz Kozlowski; Grzegorz Raczak; Andrzej Kutarski
Related Documents :
18651397 - Effects of different atrial pacing modes evaluated by intracardiac signal-averaged ecg.
3106447 - Alpha-myosin heavy chain isoform and atrial size in patients with various types of mitr...
1112007 - Echographic assessment of atrial transport, mitral movement, and ventricular performanc...
20367547 - Characterization of cardiac remodeling in a large animal "one-kidney, one-clip" hyperte...
10213347 - Sulfonylureas and ischaemic preconditioning; a double-blind, placebo-controlled evaluat...
1190047 - Specificity of elevated serum mb creatine phosphokinase activity in the diagnosis of ac...
Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-09-14
Journal Detail:
Title:  Circulation journal : official journal of the Japanese Circulation Society     Volume:  73     ISSN:  1347-4820     ISO Abbreviation:  Circ. J.     Publication Date:  2009 Nov 
Date Detail:
Created Date:  2009-10-23     Completed Date:  2010-02-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137683     Medline TA:  Circ J     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  2029-35     Citation Subset:  IM    
Department of Cardiology and Electrotherapy, Medical University of Gda??sk, Gda??sk, Poland.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Atrial Fibrillation / physiopathology,  prevention & control,  therapy
Atrial Function
Bradycardia / physiopathology,  therapy*,  ultrasonography
Cardiac Pacing, Artificial / methods*
Echocardiography, Doppler, Pulsed
Heart Conduction System / physiopathology
Middle Aged
Pacemaker, Artificial
Tachycardia / physiopathology,  therapy*,  ultrasonography

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

Previous Document:  Mechanical lymphatic drainage in the treatment of arm lymphedema.
Next Document:  Angiotensin II receptor blocker, valsartan, increases myocardial blood volume and regresses hypertro...