J Waves in Patients with Vasospastic Angina

Koji Nakagawa, Satoshi Nagase, Masamichi Tanaka, Nobuhiro Nishii, Hiroshi Morita, Kunihisa Kohno, Kengo Kusano, Tohru Ohe, Hiroshi Itoh

Research output: Contribution to journalArticle

Abstract

Objectives: The purpose of this study was to determine whether J wave is a marker of arrhythmic risk in patients with vasospastic angina (VSA). Background: Both VSA and the presence of J waves in ECG are associated with fatal ventricular arrhythmias and sudden death. However, the prevalence of J waves among VSA patients is little known. Methods: We reviewed 66 patients with VSA in our hospital retrospectively and assessed the association between the presence of J wave and clinical backgrounds among them. J wave was defined as an elevation of the QRS-ST junction of > 0.1mV from baseline. Results: Spontaneous VF and syncope occurred in 9 (13.6%) and 14 (21.2%) of all patients, respectively. J waves were observed in 33 patients (50%) and were significantly more prevalent in males than females (60.4% vs. 16.7%, Pμ0.01). Arrhythmic symptoms (ventricular arrhythmias or syncope) were observed frequently in patients with J waves, compared to without J wave (48.4% vs. 23.8%, Pμ0.05). Both of the locations and height of J waves were not associated with the history of arrhythmic symptoms. Conclusions: J waves are observed frequently among male patients with VSA. The presence of J waves potentially influence the development of lethal ventricular arrhythmias associated with VSA.

Original languageEnglish
Pages (from-to)191
Number of pages1
JournalJournal of Arrhythmia
Volume27
DOIs
Publication statusPublished - 2011

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Cardiac Arrhythmias
Syncope
Sudden Death
Electrocardiography
History

Keywords

  • J wave
  • vasospastic angina
  • ventricular fibrillation

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

J Waves in Patients with Vasospastic Angina. / Nakagawa, Koji; Nagase, Satoshi; Tanaka, Masamichi; Nishii, Nobuhiro; Morita, Hiroshi; Kohno, Kunihisa; Kusano, Kengo; Ohe, Tohru; Itoh, Hiroshi.

In: Journal of Arrhythmia, Vol. 27, 2011, p. 191.

Research output: Contribution to journalArticle

Nakagawa, Koji ; Nagase, Satoshi ; Tanaka, Masamichi ; Nishii, Nobuhiro ; Morita, Hiroshi ; Kohno, Kunihisa ; Kusano, Kengo ; Ohe, Tohru ; Itoh, Hiroshi. / J Waves in Patients with Vasospastic Angina. In: Journal of Arrhythmia. 2011 ; Vol. 27. pp. 191.
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