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Published in: Heart and Vessels 1/2015

01-01-2015 | Original Article

Electrocardiographic J waves are associated with right ventricular morphology and function: evaluation by cardiac magnetic resonance imaging

Authors: Takahiro Takeuchi, Takeshi Tomita, Kouji Yoshie, Hirohumi Hioki, Yasutaka Oguchi, Takashi Miura, Souichirou Ebisawa, Hirohiko Motoki, Ayako Okada, Kazunori Aizawa, Atsushi Izawa, Yusuke Miyashita, Jun Koyama, Uichi Ikeda

Published in: Heart and Vessels | Issue 1/2015

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Abstract

We assessed the relationship between J waves and the ventricular morphology and function using cardiac magnetic resonance imaging (MRI). The 12-lead electrocardiograms (ECGs) of 105 consecutive patients who underwent cardiac MRI were reviewed, and those with signs of arrhythmogenic right ventricular cardiomyopathy, complete left bundle branch block, complete right bundle branch block, or chronic atrial fibrillation, where the J wave is difficult to distinguish, were excluded. The ECGs of the remaining 68 patients were analyzed for the presence of J waves. Ventricular morphologic abnormalities were identified on MRI, based on the largest short-axis diameter in the right and left ventricles (d-RVmax/d-LVmax), the area (a-RVmax/a-LVmax), and the ratio RV/LVmax. The percentage contraction of the RV (PC-RV) was used as a measure of ventricular function. Thirty-two patients (47.0 %) had J waves defined as QRS-ST junction elevation >0.1 mV from baseline in the inferior/lateral leads (J group; 56 ± 15 years; 19 males). Thirty-six patients (53.0 %) did not present J waves (NJ group; 58 ± 15 years; 27 males). The d-RVmax and a-RVmax in the J group were larger than those in the NJ group (41 ± 5.2 vs 36 ± 6.6 mm, P = 0.002 and 14 ± 2.9 vs 12 ± 3.4 cm2, P = 0.022, respectively). The RV/LVmax ratio in the J group was larger than that in the NJ group (0.83 ± 0.15 vs 0.68 ± 0.15, P < 0.001). The PC-RV in the J group was smaller than that in the NJ group (0.28 ± 0.14 vs 0.36 ± 0.15, P = 0.013). J-wave amplitude was correlated positively with d-RVmax (P = 0.010) and negatively with PC-RV (P = 0.005). These results suggested that J waves are associated with right ventricular morphologic and functional abnormalities.
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Metadata
Title
Electrocardiographic J waves are associated with right ventricular morphology and function: evaluation by cardiac magnetic resonance imaging
Authors
Takahiro Takeuchi
Takeshi Tomita
Kouji Yoshie
Hirohumi Hioki
Yasutaka Oguchi
Takashi Miura
Souichirou Ebisawa
Hirohiko Motoki
Ayako Okada
Kazunori Aizawa
Atsushi Izawa
Yusuke Miyashita
Jun Koyama
Uichi Ikeda
Publication date
01-01-2015
Publisher
Springer Japan
Published in
Heart and Vessels / Issue 1/2015
Print ISSN: 0910-8327
Electronic ISSN: 1615-2573
DOI
https://doi.org/10.1007/s00380-013-0439-6

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