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Biomedical subjects

E V Flerov

Publications and source records attributed to E V Flerov.

17 recordsLinked to original sources
PubMed1977

[Effect of prostaglandin Bl on systemic and regional hemodynamics].

The effect of prostaglanding B1 (PGB1) on the cardiovascular system of dogs was studied in experiments on anesthetized dogs. The intravenous injection of PGB1 (40 microng/kg) was followed by aortic hypertension, tachycardia, an increase of myocardial contractility, an enhancement of minute volume of the heart, and in increase of arterial pressure in the pulmonary artery. Total peripheral resistance and total lung resistance were reduced. The work of the left and the right ventricles and the coronary flow increased (the latter by 29%). The average voluminous blood flow velocity in the femoral and the superior mesenteric arteries increased significantly, while in the common carotid and the renal arteries--insignificantly. The observed changes in the systemic and regional hemodynamics were of short duration.

Animals↗
PubMed1977

[Effect of prostaglandin E1 on the systemic and regional hemodynamics of dogs].

The effect of prostaglandin E1 (PGE1) on the cardiovascular system of the dog has been studied in experiments with anesthetized dogs. After intravenous injections of PGE1 (5 microgram/kg) arterial hypotension, tachycardia, increase of cardiac output, increase of myocardial contractility were observed. PGE1 induced dilatation of pulmonary vessels. Peripheral resistance reduced. The work of the left ventricle after PGE1 injection underwent two-phase changes: it increased for a short period of time and then reduced. The work of the right ventricle was activated. PGE1 caused a significant increase of the volume flow rate in the coronary (44%), femoral (83%) and superior mesenteric (59%) arteries.

Animals↗
PubMedDate not supplied

[The concentration of carbon dioxide at the end of expiration as an index of hemodynamic status in open-heart operations].

The interrelationship of the cardiac index (CI) and carbon dioxide concentration measured at the end of respiration (CO2ER) was studied in 258 patients, aged from 5 to 71 years, during operations on the open heart. Statistical analysis of the stage of revision of the left ventricular posterior wall showed that CO2ER decreases from 29.9 +/- 0.7 mm Hg to 24.9 +/- 1.4 mm Hg in parallel with reduction of CI from 2.81 +/- 0.19 l/min/m2 to 1.62 +/- 0.13 l/min/m2. At the end of this manipulation the CI and CO2ER were restored to the initial level. Marked parallel dynamics of CO and CO2ER was revealed in continuous appraisal of the cardiac output (CO), determined by the method of catheter flow measurement, at the stage of parallel circulation and blood pumping from the extracorporeal circulation apparatus before CO2ER stabilization. The correlation coefficient of these parameters varied in this stage in various patients from +0.73 to +0.96. Analysis of the mass of data (n = 161) collected in 14 patients showed that the CI--CO2ER relation was exponential in character and could be expressed by the equation CI (l/min/m2) = e (-0.99 + 0.065 x CO2ER); standard determination error +/- 0.42 l/min/m2. Analysis of the "CO2ER-venous pressure" relation in these 14 patients showed it to be similar to the "cardiac index-venous pressure" relation. The coefficients of correlation between CVD and CO2ER at this stage ranged in various patients from +0.74 to +0.96 and those between VP and CI from +0.58 to +0.97. Transition of the relations to the plateau occurred at equal CVP values.

Adolescent↗
PubMedDate not supplied

[New parameters of the oxygen transport function of arterial blood].

New criteria of the arterial blood oxygen transport function suggested by O. Siggaard-Andersen et al. are reviewed. The examples from clinical practice show the possibility to evaluate the capacity of the arterial blood to transport O2 during general anesthesia and intensive care.

Heart Transplantation↗
PubMedDate not supplied

[Effect of prostaglandin F2alpha on the systemic and regional hemodynamics of dogs].

The effect of PGF2alpha on the systemic and regional hemodynamics was studied in experiments on narcotized dogs. After an intravenous injection of F2alpha (in a single dose of 10 mg/kg) aortal hypertension, tachycardia, an increased pressure in the pulmonary artery and a slightly greater cardiac output were recored. The total peripheral and pulmonary resistance was up. The left and right ventricles showed a higher activity. However, in spite of an increased myocardial contractility a short-lived deterioration in the pumping function of the heart was noted. Under the influence of PGF2alpha the coronary blood flow was becoming more intensive. PGF2alpha caused a significant reduction of the circulation rate in the femoral and superior mesenteric arteries while in the carotid and renal ones a biphasic change of the blood flow was in evidence.

Animals↗
PubMedDate not supplied

[Effect of prostaglandin A1 on systemic and regional hemodynamics in dogs].

Intravenous administration of prostaglandin A1--PGA1 (10 gamma/kg) brings down arterial pressure, increases the rate of cardiac contractions, of cardiac output and myocardial contractility. Despite elevated pressure in the pulmonary artery the overall pulmonary resistance decreases without any substantial intensification of the right ventricle output. The mean circulation volume in the common carotid and superior mesenteric arteries shows but a momentary increase under the effect of PGA1. This is attended by a more significant and protracted rise of the circulation volume in the femoral and renal arteries, the maximum increase amounting to 140 and 39 per cent, respectively.

Animals↗