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Frontal plane QRS-T angle may be a predictor for post-coronary artery bypass graft surgery atrial fibrillation
Kuyumcu, Mevlüt Serdar; Uysal, Dinçer; Özbay, Mustafa Bilal; Aydin, Oguz; Ibrisim, Erdogan.
  • Kuyumcu, Mevlüt Serdar; Süleyman Demirel University. Faculty of Medicine. Department of Cardiology. Isparta. TR
  • Uysal, Dinçer; Süleyman Demirel University. Faculty of Medicine. Department of Cardiovascular Surgery. Isparta. TR
  • Özbay, Mustafa Bilal; Ankara State Hospital. Department of Cardiology. Ankara. TR
  • Aydin, Oguz; Süleyman Demirel University. Faculty of Medicine. Department of Cardiology. Isparta. TR
  • Ibrisim, Erdogan; Süleyman Demirel University. Faculty of Medicine. Department of Cardiovascular Surgery. Isparta. TR
Rev. Assoc. Med. Bras. (1992) ; 66(12): 1673-1678, Dec. 2020. tab
Article in English | SES-SP, LILACS | ID: biblio-1143654
ABSTRACT
SUMMARY

BACKGROUND:

New-onset postoperative atrial fibrillation (POAF) is the most common arrhythmia following coronary artery bypass graft surgery (CABG) and is associated with prolonged hospitalization, stroke, and mortality. The frontal plane QRS-T [f(QRS-T)] angle, which is defined as the angle between the directions of ventricular depolarization (QRS-axis) and repolarization (T-axis), is a novel marker of ventricular repolarization heterogeneity. The f(QRS-T) angle is associated with adverse cardiac outcomes. In light of these findings, in this study, we aimed to investigate the potential relationship between the f(QRS-T) angle and POAF.

METHODS:

180 patients who underwent CABG between August 2017 and September 2018 were included in the study retrospectively. Two groups were established as patients who preserved postoperative sinus rhythm (n=130) and those who developed POAF (n=50). The f(QRS-T) angle and all other data were compared between groups.

RESULTS:

The fF(QRS-T) angle (p<0.001), SYNTAX score (p=0.039), serum high-sensitivity CRP levels (p=0.026), mean age (p<0.001), electrocardiographic left ventricular hypertrophy rate (LVH) (p=0.019), and hypertension rate (p=0.007) were higher, and the mean left ventricular ejection fraction (LVEF) (p<0.001) was lower in the POAF group. Multivariable logistic regression analyses demonstrated that lower LVEF (p=0.004), LVH (p=0.041), and higher age (p=0.008) and f(QRS-T) angle (p<0.001) were independently associated with POAF.

CONCLUSIONS:

High f(QRS-T) angle level is closely associated with the development of POAF. The f(QRS-T) angle can be a potential indicator of POAF.
RESUMO
RESUMO

OBJETIVO:

A fibrilação atrial pós-operatória de início recente (Poaf) é a arritmia mais comum após a cirurgia de revascularização do miocárdio (CABG) e associada a hospitalização prolongada, acidente vascular cerebral e mortalidade. O ângulo QRS-T [f(QRS-T)] do plano frontal, que é definido como o ângulo entre as direções da despolarização ventricular (eixo-QRS) e repolarização (eixo-T), é um novo marcador da heterogeneidade da repolarização ventricular. O ângulo f(QRS-T) está associado a desfechos cardíacos adversos. À luz desses achados, neste estudo, objetivamos investigar a relação potencial entre o ângulo f(QRS-T) e a Poaf.

MéTODOS:

Cento e oitenta pacientes submetidos a CABG entre agosto de 2017 e setembro de 2018 foram incluídos no estudo retrospectivamente. Dois grupos foram estabelecidos como pacientes com ritmo sinusal pós-operatório (n=130) e com Poaf (n=50). O ângulo f(QRS-T) e todos os dados foram comparados entre os grupos.

RESULTADOS:

Ângulo f(QRS-T) (p<0,001), escore Syntax (p=0,039), níveis séricos de PCR de alta sensibilidade (p=0,026), idade média (p<0,001), taxa de hipertrofia ventricular esquerda eletrocardiográfica (LVH) (p=0,019) e taxa de hipertensão (p=0,007) foram maiores; a fração de ejeção média do ventrículo esquerdo (LVEF) (p<0,001) foi menor no grupo com Poaf. As análises de regressão logística multivariável demonstraram que menor LVEF (p=0,004), LVH (p=0,041), maior idade (p=0,008) e maior ângulo f(QRS-T) (p<0,001) foram independentemente associados à Poaf.

CONCLUSÕES:

Níveis de ângulo altos f(QRS-T) estão intimamente associados à Poaf. O ângulo f(QRS-T) pode ser um indicador potencial de Poaf.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Atrial Fibrillation Type of study: Etiology study / Observational study / Prognostic study / Risk factors Limits: Humans Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2020 Type: Article Institution/Affiliation country: Ankara State Hospital/TR / Süleyman Demirel University/TR

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Full text: Available Index: LILACS (Americas) Main subject: Atrial Fibrillation Type of study: Etiology study / Observational study / Prognostic study / Risk factors Limits: Humans Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2020 Type: Article Institution/Affiliation country: Ankara State Hospital/TR / Süleyman Demirel University/TR