Atrial enlargement in symptomatic heart block patients with preserved left ventricular function: possibly related to atrioventricular dyssynchrony

International Journal of Cardiology
Yu-Sheng LinMien-Cheng Chen

Abstract

Right ventricular apical pacing may possibly induce atrial dilatation as a consequence of atrioventricular dyssynchrony. However, atrial enlargement associated with atrioventricular dyssynchrony due to atrioventricular block has never been studied. This case-control survey involved 90 patients with symptomatic atrioventricular block [29 patients with Mobitz type 2 atrioventricular block, 22 patients with high degree of atrioventricular block and 39 patients with complete atrioventricular block]. The control group comprised 54 age- and sex-matched patients with sick sinus syndrome and intact intrinsic atrioventricular conduction. The M-mode measurements were obtained before implant and the left and right atrial areas were measured by planimetry. The peri-implant right atrial area (17.4±3.7 vs. 15.3±3.4 cm2, p=0.002), left atrial area (24.9±4.2 vs. 21.0±3.7 cm2, p<0.001) and left atrial diameter (36.4±5.5 vs. 33.3±4.8 mm, p=0.001) were significantly greater in atrioventricular block patients than in sick sinus syndrome patients. The two groups had similar left ventricular ejection fraction. The right atrial area (p=0.01) and left atrial area (p=0.006) remained significantly greater in atrioventricular block patients than in sick ...Continue Reading

References

Oct 23, 1997·Circulation·B M PsatyP M Rautaharju
Oct 2, 2007·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Wen-Hao LiuHsueh-Wen Chang
Dec 3, 2008·International Journal of Cardiology·Andrew J S Coats

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Citations

Sep 16, 2011·Journal of the American Veterinary Medical Association·Reid K Nakamura, Danielle L Yuhas
Sep 28, 2013·Heart Failure Reviews·Oana DickinsonGary S Francis
Mar 29, 2012·Pacing and Clinical Electrophysiology : PACE·Antonio De SistiFrançoise Hidden-Lucet

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