The relationship between frontal QRS‐T angle and the severity of newly diagnosed chronic obstructive pulmonary disease

Abstract

Chronic obstructive pulmonary disease (COPD), which is characterised by persistent airflow restriction and respiratory symptoms, is one of the most common causes of death worldwide. 1 Studies have demonstrated that COPD patients are of increased risk of cardiovascular morbidity and mortality. [2][3][4] Cardiac arrhythmias and sudden cardiac death (SCD) are very common in these patients. 3,5 The underlying mechanism of the relationships among COPD, cardiac arrhythmias and SCD has not been clearly elucidated yet. Nevertheless, hypoxemia, autonomic dysfunction and acid-base disturbances can cause the cardiac arrhythmias and SCD by altering myocardial repolarization in these patients. 6 Alteration in myocardial repolarization has a crucial role in the development of cardiac arrhythmias and SCD. 7,8 Frontal QRS-T angle, which is a novel marker of the heterogeneity in myocardial depolarization and repolarization, is described

Comparative study of frontal QRS-T angle and inflammatory parameters in obsessive compulsive disorder patients and healthy control group

“…The electrocardiogram (ECG) is a simple tool for calculating this novel marker. Information in the literature implies that fQRS-T may be an indicator of cardiovascular diseases [6].…”

Electrocardiographic alterations in patients with chronic obstructive pulmonary disease

“…Importantly, fQRST angle seems to be associated with subclinical myocardial damage even in the absence of overt cardiovascular disease[ 7 - 9 ]. Moreover, COPD seems to cause an increase in fQRST angle, and fQRST angle seems to be associated with the severity of COPD[ 10 ]. Therefore, as a sign of ventricular repolarization heterogeneity, fQRST angle may be a useful ECG parameter in the clinical evaluation of patients with COPD.…”

Is frontal QRS-T angle a valid predictor of COVID-19 severity?

“…We know that many comorbid diseases (coronary artery disease, heart failure, chronic obstructive pulmonary disease, etc.) can affect the frontal QRS-T angle [ 2 , 3 ]. In this study, the rates of diabetes mellitus, chronic obstructive pulmonary disease, and heart failure of the patient group were given, but not of the control group.…”