Fragmented QRS complex as a marker of myocardial fibrosis in patients with coronary artery disease
- Authors: Gordeeva M.S.1, Parmon E.V.1, Karlina V.A.1, Ryzhkova D.V.1
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Affiliations:
- Almazov National Medical Research Centre
- Issue: Vol 7, No 2 (2022)
- Pages: 95-102
- Section: Cardiology
- URL: https://ogarev-online.ru/2500-1388/article/view/100551
- DOI: https://doi.org/10.35693/2500-1388-2022-7-2-95-102
- ID: 100551
Cite item
Abstract
Aim – to analyze the relationship between fQRS and myocardial fibrosis in CAD patients using SPECT.
Material and methods. Retrospectively, we have analyzed the anamnesis and examinations of 116 patients with suspected coronary heart disease. The fQRS was assessed according to the criteria of Das M. et al., 2006, along with the presence of a pathological Q wave and a slow increase in the amplitude of the R wave. We analysed the transient myocardial ischemia and/or myocardial scarring using stress/rest SPECT with technetium-99m.
Results. fQRS was significantly more frequently detected in patients with stable and partially reversible perfusion defects – 44.1% and 52.2%, respectively, versus 13.0% and 5.5% in patients without perfusion defects or with reversible perfusion defects, p < 0.05. Among 28 patients with QRS fragmentation and myocardial fibrosis, 19 (67.8%) had classical signs of fibrosis on the ECG, 9 (32.1%) had no ECG-registered fibrosis but fQRS was detected. The sensitivity of fQRS marker in detecting myocardial fibrosis reached 84.4%, the specificity was 63.3%.
Conclusion. fQRS complex is an informative marker for detecting myocardial scarring in patients with coronary artery disease. Analysis of fQRS in daily clinical practice may increase the diagnostic value of electrocardiography in the detection of fibrosis.
Keywords
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##article.viewOnOriginalSite##About the authors
Mariya S. Gordeeva
Almazov National Medical Research Centre
Author for correspondence.
Email: mariagord@mail.ru
ORCID iD: 0000-0002-6895-5028
cardiologist
Russian Federation, 2, Akkuratova st., Saint Petersburg, 197341Elena V. Parmon
Almazov National Medical Research Centre
Email: edelbern@mail.ru
ORCID iD: 0000-0002-0852-631X
PhD, Associate professor, Department of Internal medicine, Head of the Institute of Medical Education
Russian Federation, 2, Akkuratova st., Saint Petersburg, 197341Veronika A. Karlina
Almazov National Medical Research Centre
Email: karlina.veronika.1med@gmail.com
ORCID iD: 0000-0001-9912-7789
cardiologist, specialist of the Regional Healthcare Development Unit, Department of Federal Projects Implementation
Russian Federation, 2, Akkuratova st., Saint Petersburg, 197341Darya V. Ryzhkova
Almazov National Medical Research Centre
Email: d_ryjkova@mail.ru
ORCID iD: 0000-0002-7086-9153
PhD, Professor of RAS, Head of the Scientific and Clinical Association of Nuclear Medicine, Head of the Department of Nuclear Medicine and Radiation Technologies, Chief Researcher of the Research Institute of Nuclear Medicine and Theranostics of the Institute of Oncology and Hematology
Russian Federation, 2, Akkuratova st., Saint Petersburg, 197341References
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