Ventricular Repolarization Disturbances’ Diagnostics in Chronic Ischemia Patients Evidence Derived from MCG

Chaikovsky, Illya; Lutay, M. І.; Lomakovsky, A.N.; Gapelyuk, Andrej; Sosnitsky, V. N.; Gushcha, B. G.; Minov, Yu. D.

doi:10.1007/978-1-4612-1260-7_108

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…The EMF direction in the measuring plane was determined by the relative position of the greatest positive and negative extrema in each map. As it was already shown by us in a previous paper [2] [3], normally ventricular repolarization EMF is directed to the left and downwards and this direction remains stable from the very beginning up to the end of an interval.…”

Section: Methodssupporting

confidence: 65%

“…For example, the sensitivity of rest ECG for the purpose of diagnostics of chronic CAD does not exceed 10%, and sensitivity of the bicycle test is between 55% and 60% [1]. At the same time, both in our pre-vious papers [2] [3], and in papers of other authors [4], it has been shown that magnetocardiography (MCG) appears to be rather sensitive in diagnostics of chronic CAD even in the patients at rest with unchanged ECG.…”

Section: Introductionmentioning

confidence: 99%

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2D and 3D Analysis of Magnetocardiographic Data in the Evaluation of the Ventricular Repolarization Changes under Exercise Stress Test in Patients with CAD

Chaikovsky¹,

Stadnyuk²,

Mjasnikov³

et al. 2014

WJCD

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Objective: Non-invasive methods of evaluation of electrical activity of the heart are still the most important functional diagnostics methods in coronary artery disease (CAD) detection. It has been shown that magnetocardiography (MCG) appears to be rather sensitive in diagnostics of chronic CAD even in the patients at rest with unchanged ECG. The objective of present paper is to investigate the influence of non-invasive tests with a physical exerciseon MCG parameters in the patients with chronic CAD. Materials and Methods: In total, 10 patients were examined (mean age 41 ± 5 years) suffering from chronic stable angina (CAD). CAD was diagnosed by clinical evidences, bicycle ergometria positive data and coronary angiography (stenosis > 70% in at least onr main coronary angiography). The control group consisted of 14 healthy volunteers. MCG mapping was performed by means of a 7-channel SQUID-magnetometer installed in an unshielded room. The MCG examination was conducted twice, whilst patients were at rest and after exercise on the bicycle (in healthy persons it was conducted immediately after exercise and in the patients, after the ST depression and/or chest pain had disappeared). The homogeneity and electric motive force (EMF) direction disturbances on magnetic field distribution maps on an extent of ST-T interval have been evaluated. Results: Statistically significant differences between groups examined based I. Chaikovsky et al. 400both on 2D and 3D quantitative criteria were demonstrated. Conclusion: The application of a set of MCG criteria based on the analysis both of ventricular depolarization and repolarization will enable a greater degree of accuracy for the results of the exercise stress test, especially in doubtful cases.

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Section: Methodssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

2D and 3D Analysis of Magnetocardiographic Data in the Evaluation of the Ventricular Repolarization Changes under Exercise Stress Test in Patients with CAD

Chaikovsky¹,

Stadnyuk²,

Mjasnikov³

et al. 2014

WJCD

View full text Add to dashboard Cite

show abstract

“…of routine tests such as ECG and resting echocardiography [4,5]. Also, it is extremely important that the magnetocardiographic system developed by Ukrainian scientists can work in a normal unshielded room, which made the method of magnetocardiography suitable for wide clinical application (Figure 3).…”

Section: Figurementioning

confidence: 99%

Unshielded Magnetocardiography in Clinical Practice: Detection of Myocardial Damage in CAD Patients and in Patients Recovered from COVID-19

Chaikovsky¹,

Kazmirchyk²,

Sofienko³

et al. 2023

Clinical Use of Electrocardiogram

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The chapter deals with magnetocardiography—a specific section of electrocardiography, which is designed to analyze the magnetic component of the electromagnetic field of the heart. Magnetocardiography is described as clinical information technology (IT), i.e., a set of methods, software, and hardware combined into a technological chain, the product of which is an automated diagnostic report. There are several examples of magnetocardiographic information technology implementation in clinical routine, aiming to register and evaluate subtle changes in the electromagnetic field of the heart for early diagnosis of the most common and dangerous heart diseases, especially coronary heart disease. It is shown that new metrics of analysis of spatial structure of 2D and 3D magnetocardiographic maps of current density distribution allow diagnosis with high accuracy of various forms of myocardial ischemia as well as myocardial damage in patients, recently recovered from COVID-19.

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Ventricular Repolarization Disturbances’ Diagnostics in Chronic Ischemia Patients Evidence Derived from MCG

Cited by 2 publications

References 3 publications

2D and 3D Analysis of Magnetocardiographic Data in the Evaluation of the Ventricular Repolarization Changes under Exercise Stress Test in Patients with CAD

2D and 3D Analysis of Magnetocardiographic Data in the Evaluation of the Ventricular Repolarization Changes under Exercise Stress Test in Patients with CAD

Unshielded Magnetocardiography in Clinical Practice: Detection of Myocardial Damage in CAD Patients and in Patients Recovered from COVID-19

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