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ORIGINAL ARTICLE   

Minerva Cardiology and Angiology 2021 February;69(1):36-42

DOI: 10.23736/S2724-5683.20.05105-1

Copyright © 2020 EDIZIONI MINERVA MEDICA

lingua: Inglese

Effect of anemia on the frontal QRS-T angle

Fatih GUNGOREN , Zulkif TANRİVERDİ, Feyzullah BESLİ, Mustafa B. TASCANOV, Ibrahim H. ALTIPARMAK, Recep DEMİRBAG

Department of Cardiology, Faculty of Medicine, Harran University, Sanliurfa, Turkey



BACKGROUND: Anemia is a common health problem worldwide and is associated with a poor prognosis for cardiovascular diseases. It can alter myocardial depolarization and repolarization by affecting the generation and propagation of electrical impulses. The frontal QRS-T angle is a novel marker of the absolute difference between myocardial depolarization and repolarization. This study investigated the effects of anemia on the frontal QRS-T angle.
METHODS: The study included 66 anemic subjects with no cardiac disorders, and 50 age- and gender-matched controls. Twelve-lead electrocardiography (ECG) was obtained for all subjects, and the frontal QRS-T angle was calculated based on the automatic report of the ECG machine.
RESULTS: Subjects with anemia had a significantly higher frontal QRS-T angle than subjects without anemia (28.9±14.1 vs. 22.5±11.8, P=0.011). In correlation analysis, the frontal QRS-T angle was positively correlated with the Body Mass Index (BMI; r=0.287, P=0.002), left ventricular mass (LVM; r=0.264, P=0.004), and heart rate (r=0.275, P=0.003) and negatively correlated with the hemoglobin level (r=-0.349, P<0.001). Multivariate regression analysis showed that the hemoglobin level (β=-0.254, tβ=-2.805, P=0.006), BMI (β=0.240, t=2.770, P=0.007), and LVM (β=0.201, t=2.303, P=0.023) were independently associated with the frontal QRS-T angle.
CONCLUSIONS: The hemoglobin level was found to be an independent predictor of the frontal QRS-T angle.


KEY WORDS: Hemoglobins; Anemia; Electrocardiography

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