Frontal QRS/T angle can predict mortality in COVID-19 patients

ABSTRACT

Aims: fQRS-T angle was investigated from general population including healthy people to patients who has hearth failure. It can predict mortality of myocarditis, ischemic cardiomyopathy, non-ischemic cardiomyopathy, idiopathic dilated cardiomyopathy and chronic heart failure in general population. There is no study in the literature that has been investigated for COVID-19 patients. The purpose of this retrospective multi-center study is to evaluate fQRS angle of COVID-19 patients for in-hospital mortality and need mechanical ventilation. Methods and results: ECG was enrolled in 327 COVID-19 patients during admission and the fQRS angle calculated. Mechanical ventilation was needed for 119 patients and 110 of them died in hospital. Patients were divided into two groups according to their fQRS angle as fQRs>90° and fQRS≤90°. Percentages of mortality and need of MV according to fQRS angle were found 67.8% and 66.1% respectively in fQRs>90° group and 26.1%, 29.9% in fQRS≤90°group. Heart rate, SO2, fQRS, eGFR and CRP only were predictors for mortality in multivariable analysis. Mortality risk was increased 2.9-fold in univariate analysis and 1.6-fold in multivariate analysis for fQRS>90 patient group in respect to fQRS≤90 group. Conclusion: In conclusion, a wide fQRS angle (>90°) was found as a predictor for mortality in-hospital and associated with the need for mechanical ventilation in COVID-19 patients. (Figure Presented).