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Effect of Valsalva Maneuver on Surface Electrocardiographic P-wave Dispersion in Paroxysmal Atrial Fibrillation

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Journal Am J Cardiol
Date 2000 Apr 12
PMID 10758937
Citations 22
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Abstract

The purpose of this study was to investigate the effect of the Valsalva maneuver on P-wave durations and dispersion. After the Valsalva maneuver, we found that maximum P-wave duration increased, minimum P-wave duration decreased, and P-wave dispersion increased in controls, whereas the opposite was true for unselected patients with paroxysmal AF. It was concluded that patients with paroxysmal AF performing the Valsalva maneuver normalized their P-wave dispersion, thereby correcting the inhomogeneous intra-atrial conduction.

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