Spatial Ventricular Gradient in Patients withWolff-Parkinson-White Syndrome in Comparison withNormal Subjects. Vectorcardiographic Evidence forSignificant Repolarization Changes due to Preexcitation
Autor: | Yasushi Tomita, Fumi Inaba-Sato, Hiroshi Hayashi, Hidehiko Saito, Hiroaki Sano, Ken Sawada, Makoto Hirai, Yoshio Ichihara, Tetsuo Yanagawa, Hirotaka Agetsuma |
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Rok vydání: | 1995 |
Předmět: | |
Zdroj: | Internal Medicine. 34:738-743 |
ISSN: | 1349-7235 0918-2918 |
DOI: | 10.2169/internalmedicine.34.738 |
Popis: | We investigated the use of the spatial ventricular gradient (VG) from vectorcardiogram (VCG) to determine whether significant repolarization differences were present in patients with WPW syndrome compared with normal subjects and also examined which VG parameter (i.e., elevation, azimuth, and magnitude) reflected the differences in repolarization properties during preexcitation. VG was calculated in 49 patients of Wolff-Parkinson-White (WPW) syndrome (group A: left-sided accessory pathway, n = 29; group B: right-sided, n = 20). Group N consisted of 607 normal subjects. In group A, the azimuth of VG was significantly (p < 0.01) greater than in groups B and N. In group B, the elevation of VG was significantly (p < 0.01) greater than in groups A and N. There were no significant differences in the magnitude of VG among groups. QRS duration was significantly (p < 0.01) related with the elevation of VG in group B. These findings suggested that VG is useful for spatial evaluation of repolarization abnormalities during preexcitation, which are related to the site of the accessory pathway. |
Databáze: | OpenAIRE |
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