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Biomedical subjects

A Prodanov

Publications and source records attributed to A Prodanov.

33 records · Page 2Linked to original sources
PubMed1976

[Morphological changes in the organs of rats subjected to limited feeding and physical loading].

Changes in the liver, stomach, small intestine, kidneys, lungs, myocardium, aorta, spleen and mesenterial lymph nodes are studied histologically in 120 male white rats from the Wistar line, subjected to a deficient alimentation regime, with and without physical exertion. The observed slight degree of adiposogenital dystrophy of the liver during free feeding regime indicates that the latter is equivalent to overfeeding. Variations from the normal histological picture in some organs (liver, myocardium, stomach and small intestine) are detected in the groups undergoing rather prolonged, moderate undernourishment--a sign of the sensitivity of these organs to the limited supply of nutritive ingredients. Physical loading, combined with free alimentary regimen, exert a beneficial effect on the organism which is suggested by the morphological data disclosing a slightly enhanced function of the myocardium and kidneys in these animals.

Animal Nutritional Physiological Phenomena↗
PubMed1976

[Systolic and diastolic load of right heart and right bundle block].

Analysing the Ecg and VCG of 818 subjects, healthy or with different congenital and acquired cardiopaties, the frequency of right bundle branch block (RBBB) is established to decrease with the increase in age of children, and is observed to be 8.9% in healthy adults. The right bundle block is observed in 82.5% of the patients with atrial septal defect and quite often in patients with right ventricle tension loading, gradually decreasing with the level of the left ventricle loading, as well as with the development of extreme right ventricle hypertrophy. Out of 50 experiments with dogs with acute and chronic right heart tension loading it is evident that the number of certain and marginal (uncertain) cases with RBBB steadily increases. At the same time this increase cannot be connected with the type of loading, in dogs in which dilatation of the right ventricle is presented as well as in others with light or marked hypertrophy. Besides, under the same conditions and durations of loading some hearts exhibit RBBB, while others do not. What has been stated before gives enough grounds to accept that RBBB in healthy subjects, as well as in patients with congenital and acquired cardiopaties manifests the electromotive tension (EMT) of persistent from foetal and children-age more pronounced physiological hypertrophy (as normal variant) of the basal part of the right ventricle. Whether the picture of RBBB is retained, pronounced or disappears is determined by the correlation between the quantity and the time-manifestation of EMT of the left ventricle and of the corps part of the right ventricle.

Adolescent↗
PubMed1975

[Some problems in rheumatic valvular defects].

The post-mortem examined rheumatic valvular diseases are confronted for the period 1961-1967 and 1968-1973. Advanced age with one decade is established in the deceased during the second period, as well as increased per cent of thromboembolic complications and chronic cardiac insufficiency and decreased per cent of rheumatic activity. A considerable per cent of rheumatic activity is observed in the deceased during the fourth and fifth decade. No difference concerning sex and valvular lesions are established in both groups.

Adult↗