The J-wave as a Predictor of Life-Threatening Arrhythmia in ICD Patients.
Int Heart J
; 58(1): 36-42, 2017 Feb 07.
Article
em En
| MEDLINE
| ID: mdl-28077815
ABSTRACT
The J-wave has been reported to be associated with life-threatening ventricular arrhythmia. However, the clinical implication of the J-wave is still unclear in patients with an implantable cardioverter defibrillator (ICD).The study population consisted of 170 ICD patients (age, 56 ± 16 years, 79.4% male) treated at Kitasato University Hospital between 2003 and 2014. Ventricular fibrillation (VF) and ventricular tachycardia (VT) events were documented via ICD interrogation, and the patients were divided into 3 groups 1) VF event group, 2) VT event group, and 3) No-event group. To predict VT or VF events, univariate and multivariate analysis of clinical data including ECG findings were performed. A J-wave was defined as the presence of notching or slurring of the QRS complex (≥ 0.1 mV) in inferior/lateral leads. Among the 170 patients examined, 23 experienced VF and 38 experienced VT during 54 ± 39 months follow-up. In the multivariate Cox proportional hazards model, the J-wave was identified as an independent predictor for a VF event (HR 3.886, 95% CI 1.313-10.568, P = 0.012). In contrast, BNP (HR 1.002, 95% CI 1.000-1.003, P = 0.043) and left ventricular diastolic diameter (HR 1.039, 95% CI 1.002-1.081, P = 0.049) were independent predictors for a VT event.The results suggest J-waves in the stable phase in an ECG may be a useful predictor for a VF event in ICD patients.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fibrilação Ventricular
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Taquicardia Ventricular
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Eletrocardiografia
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Int Heart J
Assunto da revista:
CARDIOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article