Differences between cardiac memory T wave changes after idiopathic left ventricular tachycardia and ischemic T wave inversion induced by acute coronary syndrome

Takashi Nakagawa, Tetsuo Yagi, Akihiko Ishida, Yoshiaki Mibiki, Yoshihiro Yamashina, Hirokazu Sato, Eiji Sato, Juri Komatsu, Yoshifumi Saijo

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Background Cardiac memory (CM) after idiopathic left ventricular tachycardia (ILVT) mimics ischemic T wave inversion (TWI) induced by acute coronary syndrome (ACS). We aimed to establish electrocardiography criteria for differentiating the CM from ischemic TWI. Methods and results We evaluated 16 ILVT and 48 ACS patients. We identified TWI after ILVT in 9/16 patients (CM group), typically in leads II, III, aVF, aVR, and V4–6. The characteristics of CM were similar to TWI induced by ACS involving right coronary artery, but the CM group had more TWI in V4 and shorter QTc. The criteria of (1) positive T in aVL, (2) negative or isoelectric T in II, and (3) negative T in V4–6 or (4) QTc < 430 ms were 100% sensitive and 96% specific for the CM group. Conclusion CM after ILVT can be differentiated in most cases from ischemic TWI by the distribution of TWI and the QTc.

本文言語English
ページ(範囲)596-602
ページ数7
ジャーナルJournal of Electrocardiology
49
4
DOI
出版ステータスPublished - 2016 7 1

ASJC Scopus subject areas

  • 循環器および心血管医学

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