Effect of Valsalva maneuver on surface electrocardiographic P-wave dispersion in paroxysmal atrial fibrillation.
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.
Tükek
T
T
Cardiovascular Research Center, Istanbul Faculty of Medicine, Turkey.
Akkaya
V
V
Demirel
S
S
Sözen
A B
AB
Kudat
H
H
Atilgan
D
D
Ozcan
M
M
Güven
O
O
Korkut
F
F
D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D001281:Atrial Fibrillation / Q000188:drug therapy / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008012:Lidocaine / Q000031:analogs & derivatives / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013564:Sympathetic Nervous System / Q000187:drug effects / Q000503:physiopathology; D013614:Tachycardia, Paroxysmal / Q000188:drug therapy / Q000503:physiopathology*; D014636:Valsalva Maneuver
D000889:Anti-Arrhythmia Agents; D008012:Lidocaine; C042288:pilsicainide