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[Comparative studies with 4 orthogonal electrocardiographic systems of left ventricular hypertrophy patients]
Insights
Electrocardiography (ECG) systems effectively detect left ventricular hypertrophy (LVH). MacFee and SVEK systems are superior for diagnosing LVH, showing sex-based differences in electrocardiographic characteristics.
Area of Science:
- Cardiology
- Medical Diagnostics
Background:
- Left ventricular hypertrophy (LVH) is a significant clinical finding.
- Arterial hypertension is a primary cause of LVH in the studied population.
Purpose of the Study:
- To evaluate the effectiveness of different orthogonal electrocardiography (ECG) systems in diagnosing LVH.
- To identify sex-based differences in ECG characteristics of LVH.
Main Methods:
- Analysis of ECG data from 138 patients with confirmed LVH.
- Comparison with 155 healthy subjects.
- Utilized Frank, MacFee, SVEK III, and Akulinicev orthogonal ECG systems.
Main Results:
- Specific ECG changes, including increased R amplitude and deviations in Rz and Rx, were characteristic of LVH.
- The MacFee and SVEK systems demonstrated the best manifestation of LVH characteristics.
- These systems also revealed positive discrepancies between sexes in ECG findings.
Conclusions:
- MacFee and SVEK orthogonal ECG systems are most effective for diagnosing left ventricular hypertrophy.
- ECG characteristics of LVH vary between males and females, particularly when analyzed with MacFee and SVEK systems.
Abstract:
One hundred and thirty eight patients with left ventricular hypertrophy confirmed clinically or roentgenologically are discussed, being grouped into three age subgroups, separately males and females. Arterial hypertension is the predominating disease--128. The following orthogonal ECG systems were used: Frank, MacFee, SVEK III and Akulinicev. The results obtained from 155 healthy subjects serve as a comparison. Most typical were established to be the changes with the increased R amplitude in the axes and X, the deviations of Rz being more characteristic for the systems Frank, MacFee and SVEK and in Rx--for Akulinicev system. The changes in some other indices were also discussed (Xt, Xst)--according to age and sex. It was established that the characteristics of left ventricular hypertrophy are electrocardiographically best manifested in MacFee and SVEK, those systems providing positive discrepancies between both sexes.