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Biomedical subjects

I Ia Usvatova

Publications and source records attributed to I Ia Usvatova.

At least 19 recordsLinked to original sources
PubMed1979

[Attempt at mathematical prognosis of the effect of surgery in embolism of the main arteries, according to various clinico-biochemical indicators].

The possibility, in principle, of mathematical prognostication of the results of an operative intervention according to the initial clinicobiochemical indices is shown. The duration of ischemia, the blood serotonin level, and the severity of the atherosclerosis and cardiovascular insufficiency are the most significant of the studied indices influencing the outcome of operation for embolism of the major limb arteries.

Computers↗
PubMed1979

[Use of correlation analysis of clinical biochemical indices for a study of the pathogenesis of acute arterial obstruction].

The role of serotonin, histamine, and the kallikrein-kinin system in acute arterial occlusion during ischemia was studied from the standpoint of multivariate correlation analysis. The mechanisms of their participation in the genesis of pathophysiological disorders in the organism in acute arterial occlusion are discussed. The important role of serotonin and the kallikrein inhibitor in this pathological condition is shown.

Acute Disease↗
PubMed1978

[Role of the sympathetic-adrenal and kallikrein-kinin systems in regulating central hemodynamics in acute experimental occlusion of the terminal portion of the aorta].

The role of the sympatheticoadrenal and kallikrein-kinin systems in the pathogenesis of hemodynamic disorders was studied in 29 dogs with acute experimental occlusion of the terminal part of the aorta. Data confirming the close dependence of the indices of central hemodynamics on the activity of the sympatheticoadrenal and kallikrein-kinin systems are presented. Close positive correlative connection between activation of the sympatheticoadrenal and kallikrein-kinin systems was revealed. The possible mechanisms of the correction of hemodynamic disorders in severe degree of ischemia by means of agents blocking the kallikrein system are discussed.

Adrenal Glands↗
PubMed1978

[Importance of determining the renin activity in the blood plasma of the renal veins in symptomatic hypertension].

In patients with vasorenal hypertension blood plasma renin activity was always higher on the side of the lesion than on the contralateral side, whereas in patients with nephrogenic hypertension and coarctation of the aorta this value was within physiological norm. After reconstructive operations in vasorenal hypertension (in an unilateral lesion) a hypotensive effect was produced when the ratio of blood plasma renin activity on the side of the lesion to that on the healthy side was 1.4 and more. The ratio of renin activity in plasma of blood in the renal veins is an important diagnostic and prognostic criterion.

Adolescent↗
PubMed1976

[Heart preservation by means of hypothermia and hyperbaric oxygenation].

The efficiency of the methods of hypothermia and hyperbaric oxygenation for the preservation of canine hearts was studied. The cardiac function was found to reestablish itself nearly completely after 3 hours of preservation, despite some significant metabolic shifts -- disintegration of oxidation and phosphorylation, activation of lysosomal enzymes, reduction of the store of adenyl macroergs and biogenic amines. Five hours of preservation result in irreversible changes in the heart.

Acetylcholine↗