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Journal of Anesthesia
Published in: Journal of Anesthesia 5/2013

01-10-2013 | Original Article

Preoperative left atrial volume index predicts postoperative atrial fibrillation in patients with severe aortic valve stenosis

Authors: Yoshifumi Naito, Kazuo Yamazaki

Published in: Journal of Anesthesia | Issue 5/2013

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Abstract

Purpose

Left atrial enlargement correlates with the severity of diastolic dysfunction and is a predictor of cardiovascular complications such as atrial fibrillation. Aortic valve stenosis (AS) causes left atrial enlargement and progression of diastolic dysfunction. The aim of this study was to investigate the efficacy of the preoperative left atrial volume index (LAVI) in predicting postoperative outcome in patients with severe AS.

Methods

Forty-seven patients with severe AS who underwent aortic valve replacement were examined. Transthoracic echocardiography and LAVI measurement were performed on admission. Patients were divided into two groups according to optimal cut-off values of LAVI derived from receiver operating characteristic curves for postoperative atrial fibrillation (POAF) (group S: LAVI <52 ml/m2, group L: LAVI ≥52 ml/m2). The incidence of POAF, ventilation time, inotropic support time, duration of stay in intensive care, and overall duration of hospital stay were evaluated.

Results

By univariate analysis, the incidence of POAF in group S was significantly lower than that in group L (25.9 and 65.0 %, respectively; P < 0.01). Values for other parameters were higher in group L, although the differences were insignificant.

Conclusion

In patients with severe AS, a preoperative LAVI of ≥52 ml/m2 may be a useful predictor of POAF, although the efficacy of this index for predicting other postoperative outcomes has yet to be determined.
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Metadata
Title
Preoperative left atrial volume index predicts postoperative atrial fibrillation in patients with severe aortic valve stenosis
Authors
Yoshifumi Naito
Kazuo Yamazaki
Publication date
01-10-2013
Publisher
Springer Japan
Published in
Journal of Anesthesia / Issue 5/2013
Print ISSN: 0913-8668
Electronic ISSN: 1438-8359
DOI
https://doi.org/10.1007/s00540-013-1594-8

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