J-Wave in Patients With Syncope

Background:Syncope is a common occurrence. The presence of J-wave, also known as early repolarization, on electrocardiogram is often seen in the general population, but the relationship between syncope and J-wave is unclear.Methods and Results:After excluding 67 patients with structural heart diseas...

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Bibliographic Details
Published in:Circulation Journal 2015/09/25, Vol.79(10), pp.2216-2223
Main Authors: Chiba, Yuta, Minoura, Yoshino, Onishi, Yoshimi, Inokuchi, Koichiro, Ochi, Akinori, Kawasaki, Shiro, Onuma, Yoshimasa, Munetsugu, Yumi, Kikuchi, Miwa, Ito, Hiroyuki, Onuki, Tatsuya, Watanabe, Norikazu, Adachi, Taro, Asano, Taku, Tanno, Kaoru, Kobayashi, Youichi
Format: Article
Language:English
Subjects:
Adult
Aged
Autonomic regulation
Electrocardiography
Female
Head-up tilt test
Humans
J-wave
Male
Middle Aged
Syncope
Syncope - physiopathology
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Summary:Background:Syncope is a common occurrence. The presence of J-wave, also known as early repolarization, on electrocardiogram is often seen in the general population, but the relationship between syncope and J-wave is unclear.Methods and Results:After excluding 67 patients with structural heart disease from 326 with syncope, we classified 259 patients according to the presence or absence of J-wave (≥1 mm) in at least 2 inferior or lateral leads. Head-up tilt test (HUT) was performed for 30 min. If no syncope or presyncope occurred, HUT was repeated after drug loading. Before tilt, 97/259 (37%) had J-wave (57 male, 47.6±22.5 years) and 162 patients had no remarkable change (89 male, 51.1±21.2 years). HUT-positive rate was higher in patients with J-wave, compared with patients without (P
ISSN:1346-9843
1347-4820
DOI:10.1253/circj.CJ-15-0340