Frontal QRS-T angle as a marker of left ventricular hypertrophy in patients with essential hypertension
Journal Title: Dokuz Eylul Universitesi Tip Fakultesi Dergisi - Year 2018, Vol 32, Issue 2
Abstract
Objective: Previous studies showed that myocardial repolarization markers are prolonged in hypertensive patients with left ventricular hypertrophy (LVH) compared to patients with non-LVH. Frontal QRS-T angle, angle between the QRS and T wave axes, is novel marker of myocardial repolarization. The aim of our study is to investigate the relationship between frontal QRS-T angle and LVH in hypertensive patients. Material and Method: A total 187 hypertensive patients were included our study. Frontal QRS-T angle was obtained from the automatic reports of the ECG machine. LVH was defined as left ventricular mass index (LVMI) > 115 g/m2 in men and 95 g/m2 in women. Results: Patients with LVH had significantly longer QT dispersion (p=0.028), corrected QT dispersion (p=0.010), Tp-e interval (p = 0.045) and wider frontal QRS-T angle (p<0.001) compared to patients with non-LVH. In correlation analysis, LVMI was positively correlated with QT dispersion (r=0.150, p=0.041), corrected QT dispersion (r=0.167, p=0.022), Tp-e interval (r = 0.160, p = 0.046) and frontal QRS-T angle (r=0.360, p<0.001). By a multivariate analysis, frontal QRS-T (OR: 1.04, 95% CI: 1.02-1.06, P < 0.001) angle was found to be the only independent predictor of LVH. ROC curve analysis showed that the best cut-off value of frontal QRS-T angle for predicting LVH was ≥ 28o. This cut-off value predicted LVH with a sensitivity of 70.5% and a specificity of 54.5%. Conclusion: Frontal QRS-T angle is a simple, inexpensive and easily obtainable parameter from surface electrocardiography. It can be used as a simple marker of LVH in hypertensive subjects.
Authors and Affiliations
Zülkif TANRIVERDİ, Feyzullah BEŞLİ, Fatih GÜNGÖREN, İbrahim Halil ALTIPARMAK, Asuman BİÇER YEŞİLAY, Musluhittin Emre ERKUŞ, Recep DEMİRBAĞ
Keywords
Related Articles
- EP ID EP413044
- DOI 10.5505/deutfd.2018.98700
- Views 87
- Downloads 0
Sulcus Nervi Dorsalis Penis / Clitoridis: Anatomik Bir Çalışma
Amaç: Bu çalışmanın amacı, pubis üzerinde bulunan ve klinik önemi olan Sulcus Nervi Dorsalis Penis/Clitoris’in (SNDP/C) bulunma oranını ve anatomik özelliklerini tanımlamaktır. Yöntem ve Gereçler: Bu çalışma Dokuz...
The challenges and needs of investigators conducting a clinical trial: a pilot survey study
Objective: This study was conducted to identify the challenges and needs in the clinical trial process faced by faculty members of the Dokuz Eylul University Faculty of Medicine who were the principal investigator in the...
Distal hipospadias onarımı; klinik sonuçlarımız
Amaç: Bu çalışmanın amacı, hipospadias onarımı yaptığımız 71 hastanın sonuçlarını cerrahi teknik, komplikasyonlar açısından değerlendirmektir Gereç ve Yöntemler: Ocak 2012-2013 tarihleri arasında Snodgrass yöntemi ile...
Yaşlı Hastalarda Ventral Herni Tamirinde Elektif Cerrahiye Karşı Acil Cerrahi Yaklaşımın Karşılaştirılması
Amaç: Yaşam süresinin ve beklentisinin artmasıyla yaşlı hastalar ile artık daha fazla karşılaşılmaktadır. Gelişen teknoloji ve tıbbi uygulamalar ile yaşlı hastalar daha rahat opere edilmekte ve morbidite-mortalite riskle...
Infertility Cases in Pulmonary Medicine Departments
Herein, we present two cases of infertility who were evaluated by urologists and gynecologists. The first case was a 33-year-old man with recurrent sinusitis and bronchiectasis for 10 years, and he was evaluated by an ur...