Evaluation of Frontal QRS-T Angle in Patients with Coronary Artery Ectasia
Yükleniyor...
Dosyalar
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Sociedade Brasileira de Cardiologia – SBC
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Background: Coronary artery ectasia (CAE) is defined by focal enlargement of the coronary artery exceeding 1.5
times the adjacent normal segment. CAE can often cause arrhythmias, heart failure, sudden death, and myocardial
ischemia. Ischemia due to microvascular dysfunction may be responsible for the ventricular heterogeneity in CAE.
Objectives: The aim of our study was to evaluate the frontal QRS-T angle in patients with CAE.
Methods: Our study included 55 patients with CAE and 50 individuals in the control group. Demographic
characteristics and electrocardiographic parameters were compared between the two groups. Categorical variables
were compared using the chi-square test. Continuous variables were compared using unpaired Student’s t-test.
P values < 0.05 were considered statistically significant. The frontal QRS-T angle was calculated from 12-lead
electrocardiograms (ECGs) using the automatic report from the electrocardiography machine.
Results: The average age of patients with CAE was 63.2 ± 3.4 years, with 18 women among them. The control
group had an average age of 61.1 ± 3.2 years, with 28 women included. There was no significant difference
in demographic parameters between the two groups. Compared to the control group, patients with CAE had
significantly wider frontal QRS-T angle (p < 0.001), as well as longer QTmax duration, p = 0.002; Tp-Te interval,
p = 0.02; and QT dispersion (QTd), p = 0.04.
Conclusion: The frontal QRS-T angle can be calculated easily and time-efficiently using surface electrocardiography.
In this study, we showed for the first time that the frontal QRS-T angle was significantly increased in patients
with CAE.
Açıklama
Anahtar Kelimeler
Coronary Artery Disease; Dilatation, Pathologic; Electrocardiography
Kaynak
International Journal of Cardiovascular Sciences
WoS Q Değeri
Scopus Q Değeri
Cilt
36
