The spatial QRS-T angle as a marker of ventricular repolarisation in hypertension

Dilaveris, Polychronis; Gialafos, Elias; Pantazis, Antonios; Synetos, Αndreas; Triposkiadis, Filippos; Gialafos, John

doi:10.1038/sj.jhh.1001129

Cited by 65 publications

(52 citation statements)

References 26 publications

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“…Furthermore, the spatial QRS-T angle has been shown to be increased in patients with various cardiac risk factors, including smoking, diabetes and hypertension [34][35][36][37]. The latter two associations were also observed in this study.…”

Section: Discussionsupporting

confidence: 73%

ECG-Derived Spatial QRS-T Angle Is Associated with ICD Implantation, Mortality and Heart Failure Admissions in Patients with LV Systolic Dysfunction

Gladding

Gleeson

Liao

et al. 2017

Heart, Lung and Circulation

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Section: Discussionsupporting

confidence: 73%

ECG-Derived Spatial QRS-T Angle Is Associated with ICD Implantation, Mortality and Heart Failure Admissions in Patients with LV Systolic Dysfunction

Gladding

Gleeson

Liao

et al. 2017

Heart, Lung and Circulation

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“…6 -11 It is of interest to note that a modest correlation between the planar QRS-T angle and the spatial QRS-T angle has been described among patient populations in whom both angles have been measured. 29,30 The widespread clinical use of other ECG risk markers such as signal-averaged ECGs and microvolt T-wave alternans has been limited in part because of the necessity of specialized equipment. The ability to easily measure the planar QRS-T angle from a standard 12-lead ECG is therefore particularly attractive and could be incorporated into automated ECG risk scoring, as has been proposed recently.…”

Section: Figurementioning

confidence: 99%

Prognostic Value and Temporal Behavior of the Planar QRS-T Angle in Patients With Nonischemic Cardiomyopathy

et al. 2008

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Background-The planar QRS-T angle can be easily obtained from standard 12-lead ECGs, but its predictive ability is not established. We sought to determine the predictive ability of the planar QRS-T angle in patients with nonischemic cardiomyopathy and to assess QRS-T angle behavior over time. Methods and Results-Baseline QRS-T angles from 455 patients in the Defibrillators in Nonischemic CardiomyopathyTreatment Evaluation (DEFINITE) trial were measured. All patients had nonischemic cardiomyopathy, New York Heart Association class I to III heart failure, and nonsustained ventricular tachycardia or frequent ventricular ectopy. The primary end point (a composite of total mortality, appropriate implantable cardioverter-defibrillator shock, or resuscitated cardiac arrest) occurred in 25 of 172 patients (14.5%) with a QRS-T angle Յ90°and in 72 of 283 patients (25.4%) with a QRS-T angle Ͼ90°(hazard ratio, 1.93; 95% confidence interval, 1.23 to 3.05; Pϭ0.002). A QRS-T angle Ͼ90°remained a significant predictor of the primary end point (Pϭ0.039) after adjustment for treatment group, age, gender, QRS duration, left bundle-branch block, left ventricular ejection fraction, New York Heart Association class III, atrial fibrillation, and diabetes mellitus. The secondary end point (total mortality) occurred in 17 of the 172 patients (9.9%) with a QRS-T angle Յ90°and in 49 of the 283 patients (17.3%) with a QRS-T angle Ͼ90°(hazard ratio, 1.79; 95% confidence interval, 1.03 to 3.10; Pϭ0.016). A sample of 152 patients with multiple follow-up ECGs was analyzed to assess temporal QRS-T angle behavior. Changes in the QRS-T angle correlated with changes in left ventricular ejection fraction and QRS duration over time (PϽ0.001). Conclusions-A planar QRS-T angle

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“…The mean spatial QRS-T angle (the angle between the QRS axis and T wave axis in three dimensions) is normally about 60º for women and 75º for males. 4,5 Widening of the spatial QRS-T angle has been found to be an independent risk factor for cardiac events or mortality [6][7][8] in conditions like coronary artery disease, 9 systemic hypertension, 10 diabetes mellitus 11 and chronic kidney disease. 12 More recently it has also been thought to be associated with increased mortality even in apparently healthy individuals.…”

Section: Comparison Of the Spatial Qrs-t Angle Derived From Digital Ementioning

confidence: 99%

Comparison of the spatial QRS-T angle derived from digital ECGs recorded using conventional electrode placement with that derived from Mason-Likar electrode position

Salvi

Clark

Karnad

et al. 2016

Journal of Electrocardiology

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The spatial QRS-T angle as a marker of ventricular repolarisation in hypertension

Cited by 65 publications

References 26 publications

ECG-Derived Spatial QRS-T Angle Is Associated with ICD Implantation, Mortality and Heart Failure Admissions in Patients with LV Systolic Dysfunction

ECG-Derived Spatial QRS-T Angle Is Associated with ICD Implantation, Mortality and Heart Failure Admissions in Patients with LV Systolic Dysfunction

Prognostic Value and Temporal Behavior of the Planar QRS-T Angle in Patients With Nonischemic Cardiomyopathy

Comparison of the spatial QRS-T angle derived from digital ECGs recorded using conventional electrode placement with that derived from Mason-Likar electrode position

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