PubMed Health⌕ Search

Biomedical subjects

L Georgiev

Publications and source records attributed to L Georgiev.

At least 37 records · Page 2Linked to original sources
PubMed1976

[Origin of the staphylococci in slaughtered poultry].

Studied were 382 coagulase-positive and 290 coagullase-negative Staphylococcus strains isolated from birds during their post-slaughter handling, from the vats for water cooling as well as from the women working on the slaughter-house conveyor. Studied were the phage behaviour, fibrinolysine production, the crystal-violet test and the type of hemolysines. It was established that the coagulase positive staphylococci were lysed slightly by the human and the bovine set of phages. The main sources of staphylococci of both human and bovine origin appeared to be the nasal cavity and the hands of workers. Evisceration proved to contribute to the tenfold higher count of staphylococci in the slaughtered birds. Most of the investigated strains of Staphilococcus aureus and Staphylococcus epidermidis differed from the human and the bovine type and were probably staphylococci of avian origin.

Abattoirs↗
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

[Significance of some coefficients resulting from dye photometry in the functional characterization of mitral defects].

One hundred and eighty six patients with mitral defects were examined and subdivided into four groups according to the basic clinical and instrumental tests: 59 with pure, 46 with prevailing mitral stenosis, 37 with prevailing and 44 with pure mitral insufficiency. The patients, within the pointed group were subdivided into subgroups, depending on the character of the auricular rhythm, the presence of accompanying tricuspid insufficiency with hemodynamic significance and cardiac decompensation. The circilatory times, TA, TD and TC were calculated for all the patients and especially the coefficients (see article) from the dye dilution curves. The analysis covers only patients from the different groups without other defects and cardiac decompensation. Fluctuations of the minimal and maximal values of TA, K1, K2, and K3 are presented. Their average values are calculated as well as the square deviations. In sinus rhythm and compensated heart, the combination of the values for K1 over 1,80 and K2 over 1,50 in prevailing and for K1 over 1,90 and K2 over 1,60 in pure mitral insufficiency might be used as a criterion for differentiation of pure and prevailing mitral stenosis. The close values in pure and prevailing mitral stenosis, as well as in pure and prevailing mitral insufficiency do not present a possibility to be used in the differentiation of the groups with hemodynamic significance of stenosis and insufficiency. In arrhythmia absoluta, accompanying tricuspid insufficiency and cardiac decompensation, the coefficient K1 and K2 have no value in mitral defect characterization. The close average values of TA and K3 for all patient groups devaluate their importance as functional indices of mitral defects.

Arrhythmias, Cardiac↗
PubMed1975

[Influence of the storage of slaughtered birds at low temperature on the viability of some microorganisms].

Studied was the effect of the period of storing slaughtered broiler birds at low temperatures on the activity of pathogenic staphylococci, enteropathogenic Escherichia coli organisms and pathogenic species of the Proteus genus. It was found that freezing at minus 34 degrees C and storage of the slaughtered birds at minus 18 degrees C contribute to the considerable decrease in the bacterial count of the investigated test organisms, this being observed to a highest extent during the first fifteen days of storage.

Animals↗
PubMed1975

[Retention of water in slaughtered birds].

Studied was the effect of some factors on the retention of water in the slaughtered birds during their technologic processing in all poultry-dressing combines of this country. It was found that the carcass size plays an important role: the greater the weight the lower the percent of the absorbed water. On the other hand, prolonged water cooling was found to correlate positiely with the amount of retained water, while the time of dripping does not lead to essential change of this value.

Animals↗
PubMed1975

[Terminal bundle-branch block (TBB) in acute and chronic overloading of the right heart].

The authors performed a model loading of the right heart ventricle in 40 dogs in 17 dogs--acute tension loading by creating a partial ligature (banding) of the pulmonary artery; the dogs were examined in respect to the changes hemodynamics and ECG for a period of three hours. In the second group of 10 dogs a chronic tension loading of the right heart was created by a partial ligation of the pulmonary artery (banding); the dogs were followed--up in respect to hemodynamic and vectocardiographic changes for a period of one year. In the other group of 10 dogs a chronic loading of the right heart: was formed by operative route and interatrial defect was obtained; the dogs were followed-up in respect to hemodynamics and vectrocardiographic changes for a period of one year. The authors described the changes in the intraventricular conduction of vectro cardiograms, made by the three plane system of Akulincev, and these vectrocardiograms were compared with the type and degree of loading as well as with the morphologic changes occurred in the heart. The authors indicated the nonspecificity of TBB as a sign of volume loading of the right heart ventricle.

Acute Disease↗