Effect of Valsalva maneuver on surface electrocardiographic P-wave dispersion in paroxysmal atrial fibrillation.
Cardiovascular Research Center, Istanbul Faculty of Medicine, Turkey.
- Published Article
The American Journal of Cardiology
- Publication Date
Apr 01, 2000
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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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/10758937