SciELO - Scientific Electronic Library Online

 
vol.89 número5Uso de agentes hipolipemiantes y cumplimiento de metas terapéuticas en pacientes de alto riesgo cardiovascular en la República ArgentinaRelación entre la duración del sueño y la presión arterial elevada en estudiantes universitarios índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

  • No hay articulos similaresSimilares en SciELO

Compartir


Revista argentina de cardiología

versión On-line ISSN 1850-3748

Resumen

INGINO, CARLOS A. et al. Novel sign of frontal plane ventricular repolarization to predict left ventricular systolic dysfunction. Rev. argent. cardiol. [online]. 2021, vol.89, n.5, pp.402-408.  Epub 01-Oct-2021. ISSN 1850-3748.  http://dx.doi.org/10.7775/rac.es.v89.i5.20433.

Background:

Different electrocardiographic abnormalities have been associated with left ventricular systolic dysfunction (LVSD), although the association with standard electrocardiographic frontal plane ST-segment depression (STD) has not been established.

Objective:

The aim of this study was to evaluate whether lead I STD (STD-I) allows predicting the presence of LVSD.

Methods:

Patients with risk factors or stable chronic heart disease, and baseline electrocardiogram (ECG) and echocardiogram that provided evaluation of left ventricular ejection fraction (LVEF), left ventricular wall motility, and dichotomous evaluation of left ventricular hypertrophy (LVH), were prospectively included in the study. ST-segment morphology in leads I and V6 was evaluated, defining horizontal (≥1mm at 80 ms from the J point) or downsloping STD as abnormal STD-I and STD-6.

Results:

A total of 691 patients; with mean age of 69.8 ± 12 years and 61.6% men, were prospectively analyzed. STD-I and STD-6 were identified in 250 (36.2%) and 199 (28.8%) cases, respectively. Presence of STD-I and STD-6 was associated with a significantly lower LVEF compared with the absence of this finding: 44.8 ± 13.9% vs. 55.6 ± 8.9% (p <0.0001) and 45.8 ± 14.1% vs. 54.1±10.4% (p <0.0001), respectively. Both were associated with the presence of LVSD, defined as LVEF <50%, although STD-I showed better diagnostic performance than STD-6 [area under the ROC curve 0.72 (95% CI 0.69-0.76) vs. 0.64 (95% CI 0.61-0.68), p = 0.0001].

Conclusions:

This study showed that STD-I predicts the presence of LVSD better than STD-6. The potential relevance of these findings should be placed in the current context of the emerging use of wearable devices that analyze electrocardiographic information through a single lead.

Palabras clave : ST-depression; D1 lead; Left ventricular systolic dysfunction.

        · resumen en Español     · texto en Español     · Español ( pdf )