Abstract
One of the pressing problems of modern cardiology is the study of the etiological and risk factors for sudden cardiac death (SCD). Arrhythmias, which in most cases correlate with signs of myocardial hypertrophy, are important for its occurrence. The most common cause of left ventricular hypertrophy (LVH) is hypertension. However, an equally important trigger mechanism for malignant arrhythmias is coronary heart disease (CHD). It is known that LVH is considered as an independent risk factor for cardiovascular complications. Methods. The study design included an assessment of the effect of cardiac remodelling, the degree of LVH, and the degree of dilatation of left atrium (LA) on the development of malignant disorders of rhythm and conduction of the heart (DRCH). 78 patients with II degree of hypertension were examined. Patients were divided into two groups depending on the presence of CHD. In each group, there were malignant rhythm and conduction disorders. The control group consisted of 20 healthy people. Results and discussion. The stages of LVH were equally represented in both groups, but the concentric LVH, the initial degree of LVH, and the dilatation of LA predominated. In patients with malignant DRCH, a moderate degree of LVH predominated. Significantly, more likely malignant DRCH occurred in the second group and presented with high-grade ventricular extrasystoles, prolonged QT interval, and sinus node weakness syndrome.
Highlights
LEFT VENTRICULAR HYPERTROPHY AND ports on the features of the typesOne of the pressing problems of modern cardiology is the study of the etiological and risk factorsLEFT ATRIAL DILATATION AS MARKERS OF MALIGNANT ARRHYTHMIAS DEVELOPMENT and degrees of left ventricular hypertrophy (LVH), dilatation of the left atrium (LA), which would most likely lead to malignant arrhythmias.for sudden cardiac death (SCD)
Malignant DRCH occurred in 19 (50 %) patients of group II, but significantly (p> 0.05) occurred more frequently among patients with stable angina or existing HF of functional class (FC) III, as confirmed by other authors [8]. They had no significant difference depending on the indices of pressure, degrees and duration of hypertension, duration of coronary heart disease (CHD), anamnestic myocardial infarction and acute damage to the cerebral circulation
The most common type of malignant DRCH were ventricular extrasystoles 3–5 gradations according to Laun, which occurred significantly (p>0.05) more frequently in patients of group II
Summary
LEFT VENTRICULAR HYPERTROPHY AND ports on the features of the typesOne of the pressing problems of modern cardiology is the study of the etiological and risk factorsLEFT ATRIAL DILATATION AS MARKERS OF MALIGNANT ARRHYTHMIAS DEVELOPMENT and degrees of LVH, dilatation of the LA, which would most likely lead to malignant arrhythmias.for SCD. LEFT VENTRICULAR HYPERTROPHY AND ports on the features of the types. One of the pressing problems of modern cardiology is the study of the etiological and risk factors. LEFT ATRIAL DILATATION AS MARKERS OF MALIGNANT ARRHYTHMIAS DEVELOPMENT and degrees of LVH, dilatation of the LA, which would most likely lead to malignant arrhythmias. Arrhythmias, which in most cases correlate with signs. The most common cause of LVH is hypertension. In CHD, myocardium is affected; metabolic processes and. 56 Pirogova str., Vinnytsya, Ukraine, 21018 or absence of CHD
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