Relationship between frontal QRS-T duration and the severity of coronary artery disease in who were non-diabetic and had stable angina pectoris

Akın, Halil; Bilge, Önder

doi:10.5152/anatoljcardiol.2021.33232

Cited by 3 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Frontal QRS-T angle was found to be associated with all-cause death, cardiac death, and arrhythmias in patients with ischemic heart failure, non-ischemic heart failure, heart failure with preserved ejection fraction, myocarditis, acute myocardial infarction, and in the normal population [ 2 , 3 - 11 ]. In addition, patients with the coronary slow-flow [ 14 ] and severe coronary artery disease [ 15 ] were found to have wider frontal QRS-T angles compared to those without. In our study, the frontal QRS-T angle was observed to be wider in the mortality group.…”

Section: Discussionmentioning

confidence: 99%

The Relationship Between In-Hospital Mortality and Frontal QRS-T Angle in Patients With COVID-19

Taştan¹,

İnci²

2022

Cureus

View full text Add to dashboard Cite

BackgroundRecent studies have demonstrated that the frontal QRS-T angle, defined as the angle between the mean QRS and T vectors, is a strong independent predictor of mortality in patients with cardiovascular disease and in the normal population. In this study, we aimed to investigate the relationship between frontal QRS-T angle and in-hospital mortality in COVID-19 patients. MethodsA total of consecutive 532 patients with positive polymerase chain reaction (PCR) tests were enrolled. The patients were divided into two groups as in-hospital mortality and survival groups. Frontal QRS-T angle was automatically calculated from the admission electrocardiography (ECG). ResultsThe median age in the study population was 62 (49-72) years and 273 (51.4%) of the patients were male. The median frontal QRS-T angle was 40 degrees (20-67 IQR) in the in-hospital mortality group, while it was 27 (11-48 IQR) in the survival group (p=0.001). In multivariable logistic regression analysis, frontal QRS-T angle was found to be an independent predictor of mortality (Odds ratio (OR):1.01, 95% Confidence interval (CI):1.00-1.02, p=0.036). ConclusionFrontal QRS-T angle, which was observed wider in the in-hospital mortality group, was found to be associated with in-hospital mortality in patients hospitalized for COVID-19.

show abstract

Section: Discussionmentioning

confidence: 99%

The Relationship Between In-Hospital Mortality and Frontal QRS-T Angle in Patients With COVID-19

Taştan¹,

İnci²

2022

Cureus

View full text Add to dashboard Cite

show abstract

“…This parameter is not routinely used since advanced knowledge is required for its determination and analysis. Recent studies have demonstrated that FQRST enlargement is associated with the aging process [6], the risk of cardiac arrhythmias, such as atrial fibrillation [7], hypertension [8], the severity of coronary artery disease and myocardial infarction [9,10], heart failure [11], idiopathic dilated cardiomyopathy [12], etc. It is also recommended for stratifying cardiac risk [13] and for monitoring patients after cardiac resynchronization therapy [14], myocardial revascularization, or cardiac valve surgery [15].…”

Section: Introduction 1the Frontal Qrs-t Angle On Ecg In Epidemiologi...mentioning

confidence: 99%

The Relationship between the Frontal QRS-T Angle on ECG and Physical Activity Level in Young Adults

Ciucurel

Iconaru

2023

IJERPH

View full text Add to dashboard Cite

Background: The heart’s electrical activity has been the subject of numerous research concerning various physiological parameters. The frontal QRS-T angle (FQRST) is an advanced ECG variable with clinical epidemiological utility. This study aimed to determine the relationship between FQRST and physical activity exposure among young adults. Methods: We recorded the ECG with 12 leads of 124 participants (mean age 20.28 ± 2.23 years, age range 18–27 years). Next, we measured their physical activity level (PAL) with the International Physical Activity Questionnaire—Short Form (IPAQ), which categorizes activity into three classes: low, moderate, or high. Results: An inferential analysis, based on the Kruskal-Wallis H test and Mann–Whitney U test, revealed a statistically significant difference in FQRST between the three groups of subjects, classified by their PAL (p < 0.001). We also identified a significant regression model between the body mass index (BMI) and the FQRST (p < 0.001). Conclusions: The physical activity regime of young adults significantly influences the concordance between ventricular depolarization and repolarization, reflected in the FQRST’s width. Also, we found a regression model between FQRST and BMI with statistical significance.

show abstract

Detection of left ventricular systolic dysfunction in patients with ischemic heart disease using spatial and frontal QRS-T angles of the electrocardiogram

Sakhnova,

Blinova,

Dotsenko

et al. 2024

Terapevticheskii arkhiv

View full text Add to dashboard Cite

Aim. To evaluate the possibilities of the spatial QRS-T angle (sQRS-Ta) and the frontal QRS-T angle (fQRS-Ta) to detect low left ventricular ejection fraction (LVEF) in patients with chronic coronary heart disease. Materials and methods. We analyzed the data of 287 patients with chronic coronary artery disease, in 80 cases complicated by chronic heart failure with low LVEF. fQRS-Ta was calculated as absolute value of the difference between the frontal plane QRS and T axes. sQRS-Ta was calculated using the synthesized vectorcardiogram as a spatial angle between the integral QRS and T vectors. Results. The fQRS-Ta values in the group were 70 [25; 141]°. sQRS-Ta values in the group were 96 [55; 148]°. There were correlations between fQRS-Ta and LVEF (r=-0.58; p0.0001) and sQRS-Ta with LVEF (r=-0.63; p0.0001). According to the ROC analysis, fQRS-Ta with a threshold value of 90° made it possible to identify patients with LVEF≤40% with a sensitivity of 85% and a specificity of 75% (area under the ROC curve 0.85±0.03) and patients with LVEF≤35% with 87% sensitivity and 69% specificity (area under the ROC curve 0.84±0.04). sQRS-Ta with a threshold value of 125° made it possible to identify patients with LVEF≤40% with a sensitivity of 86% and a specificity of 82% (area under the ROC curve 0.89±0.03) and patients with LVEF≤35% with sensitivity 93% and specificity 76% (area under the ROC curve 0.89±0.02). Conclusion. In patients with chronic coronary artery disease, as the LVEF decreases, the frontal and spatial angles between the QRS and T vectors increase. These indicators with sufficiently high sensitivity and specificity make it possible to identify patients with reduced LVEF among patients with chronic coronary artery disease.

show abstract

Relationship between frontal QRS-T duration and the severity of coronary artery disease in who were non-diabetic and had stable angina pectoris

Cited by 3 publications

References 24 publications

The Relationship Between In-Hospital Mortality and Frontal QRS-T Angle in Patients With COVID-19

The Relationship Between In-Hospital Mortality and Frontal QRS-T Angle in Patients With COVID-19

The Relationship between the Frontal QRS-T Angle on ECG and Physical Activity Level in Young Adults

Detection of left ventricular systolic dysfunction in patients with ischemic heart disease using spatial and frontal QRS-T angles of the electrocardiogram

Contact Info

Product

Resources

About