The relationship between J wave and ventricular tachycardia during Takotsubo cardiomyopathy
10.1186/s42444-020-00016-6
- Author:
Seong Huan CHOI
1
;
Oh‑Hyun LEE
;
Gwang‑Seok YOON
;
Sung Woo KWON
;
Sung‑Hee SHIN
;
Sang‑Don PARK
;
Seong‑Ill WOO
;
Jun KWAN
;
Dae‑Hyeok KIM
;
Yong‑Soo BAEK
Author Information
1. Division of Cardiology, Department of Internal Medicine, Inha University College of Medicine and Inha University Hospital, 27 Inhang‑ro, Jung‑gu, Incheon 22332, Republic of Korea
- Publication Type:REVIEW
- From:International Journal of Arrhythmia
2020;21(2):e8-
- CountryRepublic of Korea
- Language:0
-
Abstract:
Background and objectives:Takotsubo cardiomyopathy (TTC) occasionally causes life-threatening ventricular arrhythmia. J wave on surface electrocardiography (sECG) has also been associated with idiopathic ventricular fibrillation and cardiac events; therefore, we investigated whether the presence of J wave on sECG is a potential risk factor for ventricular arrhythmia in patients with TTC.
Subjects and methods:We performed a retrospective study in 79 patients who were diagnosed with TTC from 2010 to 2014. Among them, 20 (25.3%) were diagnosed with ventricular tachycardia (VT). The J wave on the sECG was defined as J point elevation manifested through QRS notching or slurring at least 1 mm above the baseline in at least two leads.
Results:A higher prevalence of ventricular tachycardia was observed in patients with J wave. The corrected QT interval (QTc) was significantly longer in the VT group than in the non-VT group. In a multivariate analysis, the presence of J wave appeared to be the only independent predictors of VT [Hazard Ratio (HR) 3.5, p = 0.019].
Conclusion:Our results suggest that the presence of J wave on the sECG is significantly associated with VT, and appear to indicate that the presence of J wave is a strong and independent predictor of VT in patients with TTC.
