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False tendons may be associated with the genesis of J-waves: prospective study in young healthy male.

Abstract：

BACKGROUND:Recent studies showed that J-waves are associated with vulnerability to ventricular fibrillation. Recently we reported the association between false tendons (FTs) and J-waves in a retrospective study. METHODS AND RESULTS:We prospectively studied 50 young healthy men (mean age 24.6±2.7 years). FTs were detected echocardiographically and classified based on their points of attachment as type 1 (longitudinal type), type 2 (diagonal type), and type 3 (transverse type). J-waves were defined as terminal QRS notching or slurring with ≥0.1 mV. The filtered QRS duration (fQRSd), RMS40, and LAS40 were measured on signal-averaged ECGs. FTs were detected in 37 of the 50 subjects (74%). The incidence of J-waves was significantly higher in subjects with type 1 or type 2 FTs than those with no- or type 3 FTs (61% vs. 26%, p<0.05). The leads with J-waves were closely associated with the location of the FT. While no late potential was recorded in any study subjects, fQRSd and LAS40 were significantly longer in subjects with type 1 or type 2 FTs (p<0.05). Univariate and multivariate logistic regression analysis revealed that only the existence of FTs (type 1 or 2) was an independent predictor of the presence of J-waves. CONCLUSIONS:Our results suggest that FTs were related to the genesis of J-waves with conduction delay.

journal_name

Int J Cardiol

journal_title

International journal of cardiology

authors

Nakagawa M,Ezaki K,Miyazaki H,Ebata Y,Shinohara T,Teshima Y,Yufu K,Takahashi N,Saikawa T

doi

10.1016/j.ijcard.2014.01.101

subject

Has Abstract

pub_date

2014-03-15 00:00:00

pages

428-33

issue

2

eissn

0167-5273

issn

1874-1754

pii

S0167-5273(14)00312-X

journal_volume

172

pub_type

杂志文章

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