High-frequency electrocardiography as an additional method for diagnosing myocardial ischemia in patients with СHD of various ages
https://doi.org/10.21886/2712-8156-2020-1-3-63-67
Abstract
Objectives: to study the relationship between high-frequency electrocardiography (ECG) and selective coronary angiography data.
Materials and methods: the study was conducted on 125 patients with a diagnosis of coronary heart disease (CHD), who were sent for selective coronary angiography. Patients were divided into groups: I group - young age, II group 2- middle age, III group — senile and elderly age. All patients were recorded high-frequency ECG in 12 common leads using a computer electrocardiograph, the data obtained were analyzed by special software.
Results: according to the selective coronary angiography data, hemodynamically insignificant lesions of the coronary arteries were present in 34 (27.2%) people, and in 49 (39.2 %) people - hemodynamically significant lesions of the coronary arteries. Hemodynamically significant coronary artery stenoses are more often detected in elderly and senile patients. Stenotic lesions of the coronary arteries were more common in group 3 as opposed to group 2 (p = 0.002). High-frequency ECG analysis revealed a significant difference in the amount of RAZ between elderly and senile patients compared to young and middle-aged patients (p 1–2 = 0.373; p 1–3 = 0.006; p 2–3 = 0.008). The RAZ parameter of a high-frequency ECG in 12 common leads has a relationship with the age of patients, the number of coronary arteries with stenotic lesions, and the number of hemodynamically significant stenoses.
Conclusion: the results of the study show that high-frequency ECG can be further developed as an additional method for diagnosing myocardial ischemia.
About the Authors
K. S. Kolosova
Privolzhsky Research Medical University
Russian Federation
Russian Federation
Ksenia S. Kolosova, Post-graduate student of the Department of faculty and polyclinic therapy
Nizhny Novgorod
N. Y. Grigoreva
National Research Lobachevsky State University of Nizhny Novgorod
Russian Federation
Russian Federation
Natalia Yu. Grigoryeva, Dr. Sci. (Med.), associated professor, Head of the Department of clinical medicine
Nizhny Novgorod
Y. I. Kosuga
Privolzhsky Research Medical University
Russian Federation
Russian Federation
Yuri I. Kosuga, Сand. Sci. (Med.), associated professor, associated professor of the Department of pathological physiology
Nizhny Novgorod
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For citations:
Kolosova K.S., Grigoreva N.Y., Kosuga Y.I. High-frequency electrocardiography as an additional method for diagnosing myocardial ischemia in patients with СHD of various ages. South Russian Journal of Therapeutic Practice. 2020;1(3):63-67. (In Russ.) https://doi.org/10.21886/2712-8156-2020-1-3-63-67
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