ArticleThe American journal of emergency medicine2021
A new predictor for indicating clinical severity and prognosis in COVID-19 patients: Frontal QRS-T angle.
Article in The American journal of emergency medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.
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Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Prognostic value of C-reactive protein levels in pulmonary infections: A systematic review and meta-analysis.Medicine · 2025Pooled it
- The Effect of Electroconvulsive Therapy on Frontal QRS-T Angle in Psychiatric Patients.Noro psikiyatri arsivi · 2024Article
- Ferritin/lymphocyte percentage ratio to predict the severity and mortality of COVID-19.Malawi medical journal : the journal of Medical Association of Malawi · 2023Article
- Predictive efficacy of frontal QRS-T angle in COVID-19 patients.The American journal of emergency medicine · 2022Article
- Is frontal QRS-T angle a valid predictor of COVID-19 severity?The American journal of emergency medicine · 2022Article
- Predictivity of frontal QRS-T angle for death in COVID-19 patients may differ by age.The American journal of emergency medicine · 2022Article
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Abstract
objectiveCOVID-19; It spread rapidly around the world and led to a global pandemic. Indicators of poor prognosis are important in the treatment and follow-up of COVID-19 patients and have always been a matter of interest to researchers. The aim of this study was to investigate the relationship between frontal QRS-T angle values and clinical severity and prognosis in COVID-19 patients.
methodsThis prospective case-control study was conducted with 130 COVID-19 patients whose diagnosis was confirmed by reverse transcriptase-polymerase chain reaction (RT-PCR) and 100 healthy controls. The CURB-65 score was used as the clinical severity score.
resultsA total of 130 patients and 100 healthy controls were included in the study. When the patient and control groups were compared a significant difference was found between QT (378.07 ± 33.75 vs. 368.63 ± 19.65, p < 0.001), QTc (410.79 ± 28.19 vs. 403.68 ± 11.70, p < 0.001), QRS time (95.04 ± 21.67 vs. 91.42 ± 11.08, p < 0.001) and frontal QRS-T angle (36.57 ± 22.86 vs. 22.72 ± 14.08, p < 0.001). According to clinical severity scoring, QT (370.27 ± 25.20 vs. 387.75 ± 40.19, p = 0.003), QTc (402.18 ± 19.92 vs. 421.48 ± 33.08, p < 0.001), frontal QRS-T angle (32.25 ± 18.79 vs. 41.94 ± 26.27), p = 0.0.16) parameters were found to be significantly different. Age (odds ratio [OR], 1.201; 95% confidence interval [CI], 1.111-1.298; p < 0.001) and frontal QRS-T angle ([OR], 1.045; 95% [CI], 1.015-1.075; p = 0.003) values were found to be an independent predictor for the severity of the disease. Frontal QRS-T angle ([OR], 1.101; 95% [CI], 1.030-1.176; p = 0.004), and CRP ([OR], 1.029; 95% [CI], 1.007-1.051; p = 0.01) parameters were found to be independent predictors for the mortality of the disease. As a mortality indicator; for the frontal QRS-T angle of ≥44.5°, specificity and sensitivity were 93.8% and 84.2%, respectively.
conclusionFrontal QRS-T angle can be used as a reproducible, convenient, inexpensive, new and powerful predictor in determining the clinical severity and prognosis of COVID-19 patients.
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