[Scintigraphic evaluation of the efficacy of nonstandard methods of treating critical ischemia of the lower limbs].

In 77 patients with critical limb ishaemia treated surgically (arterialization of venous blood flow, creation of arteriovenous fistulas, transplantation of great omentum on microvascular anastomosis) regional perfusion of both legs was evaluated with radionuclide angiography. High perfusion of the ishaemic limb was revealed in the majority of patients. In these patients positive results were achieved most often, particularly in creation of arteriovenous fistulas on the leg low third and foot.

[Noninvasive assessment of myocardial functional reserves in young women with nonspecific aortoarteritis and aortic arch syndrome].

Aim: To study functional myocardial reserve in patients with nonspecific aortic arteritis (NAA) and aortic arch syndrome (AAS).

Material And Methods: Myocardial functional reserve was studied in 42 patients with NAA using ECG, spiroveloergometry, section and doppler echocardiography, radionuclide ventriculography. Healthy nonsportswomen served control.

[The effect of an extracranial occlusive lesion of the branches of the aortic arch on the status of the intracranial circulation].

Unilateral occlusion of extracranial cerebral arteries results in asymmetric intracranial flow rate against unaffected regional tissue circulation. Multiple occlusions entail reduction of intracranial circulation even in satisfactory collateral circulation. Reduction of tissue cerebral circulation occurs in well-defined occlusive processes with decompensated collateral circulation in the absence of carbogenic vascular responses.

[Regional cerebral blood flow as dependent on the nature of the occlusive lesion of the branches of the aortic arch].

A 133Xe radionuclide investigation was employed for examination of regional cerebral circulation with 5% carbogen mixture loading in patients with occlusions of the aortic arch major arteries. It was established that a positive response to carbogen mixture inhalation indicates a compensated cerebral circulation irrespective of the arterial lesion type and number. The negative vascular response is associated with uni- or bilateral reduction of the regional cerebral circulation depending on the type and severity of the arterial involvement.

[The assessment of the efficacy of surgical treatment in critical ischemia of the lower extremities by the forming of arteriovenous anastomoses].

The authors show the significance of radionuclide angiography in evaluating the efficacy of surgical treatment of lower limb critical ischemia by formation of an arteriovenous anastomosis on the side of the affection. An operation for formation of an arteriovenous anastomosis on the lower third of the leg or the foot was found to be most effective. Increased perfusion of the ischemic limb on the level of balanced mixing of the blood flow was revealed in most patients, which the authors believe to be caused by venous stasis in the lower limb due to reduced difference in pressure in the arterial and venous bed.

[The function of the heart ventricles in patients with a lesion of the aortic arch branches].

Radionuclide equilibrium ventriculography was used to examine general and regional ejection fractions and velocity characteristics for both cardiac ventricles in 28 patients with occlusions of the aortic arch branches consequent to aortic arteritis of atherosclerosis. In nonspecific aortic arteritis (NAA) even young patients have myocardial dysfunction comparable to that in the elderly with atherosclerosis. However, as shown by the nitroglycerin test, these patients preserve functional reserves of the myocardium.

[Evaluation of functional reserves of the oxygen transport system in cardiac surgery patients].

The informative value of determination of the restoration rate of spiroergometric parameters was examined in cardiosurgical patients who had undergone exercise testing. All the patients were divided into 3 homogeneous groups: (1) those without disorders; (2) those with moderate restoration; and (3) pronounced restoration. There was a moderate relationship between the restoration rate and the function of the oxygen transport system (OTS) and a high relationship between the rate and exercise tolerance in decompensated metabolic acidosis and left ventricular function.

[The possibility of normalizing the microcirculation using hemosorption in experimental peritonitis].

The goal of the present paper was a comparative study of microcirculation in the peritoneum, mesentery and omentum during the development of experimental peritonitis, as well as the investigation of possible correction of microcirculatory disturbances with the help of hemosorption. It has been established that different degree of microcirculatory disturbances in the tissues under study depended on the duration of peritonitis. Hemosorption recovered microcirculation to initial values, which indicated the reversibility of the disturbances.

[Significance of total and regional myocardial contractility in determining the indications for aortocoronary shunting].

As shown dy static radionuclide ventriculography and nitroglycerin test used to study 72 coronary patients aged 38-65, myocardial function is the essential factor for deciding on aortocoronary shunting. Focal destruction ot the myocardium responsible for a sharp attenuation of myocardial contractility may be indicative of poor prognosis and high risk of aortocoronary shunting.

[Use of anaerobic threshold for determining the level of exercise capacity in rehabilitation of patients operated on for heart defects].

An analysis of results of spiroergometry and radionuclide ventriculography in the mixed group of cardiosurgical patients allowed to reveal a reliable accretion of fraction of expulsion of the left ventricle during transition from the state of rest to work at the level of anaerobic threshold and absence of accretion of this index in further increase of exercise. The results obtained allowed to propose the use of anaerobic threshold equal to 60% of the threshold uptake of oxygen as an indicator in choosing the optimum intensity of the training exercise of patients operated on for heart diseases.

[Correction of pulmonary hypertension in heart surgery patients during the immediate postoperative period].

Long-acting nitrates given to patients undergone mitral commissurotomy caused a decrease in pulmonary hypertension severity. With nitroglycerin, euphylline, and papaverine, pulmonary pressure and total pulmonary and pulmonary arterial resistances, which was followed by enhanced cardiac output, optimized ejection fraction, and mean left ventricular blood ejection rate.

[Indicators of hepatic and intracardiac hemodynamics in the surgical treatment of liver cirrhosis].

Under analysis are results of operative treatment of 54 patients with cirrhosis of the liver. Most satisfactory hemodynamic results were obtained after endovascular embolisation of the splenic artery as the increased general hepatic blood flow and simultaneously decreased splenic blood flow, better indices of intracardiac hemodynamics. The method of peritoneoatrial shunting is most perspective in patients with cirrhosis of the liver at the stage of decompensation of portal hypertension.

[Echographic and hemodynamic indicators in liver cirrhosis with portal hypertension].

The efficiency of combined echoradionuclide investigation for the identification of the severity of portal hypertension and the determination of clear-cut criteria for the differentiation of stages of portal hypertension with reference to functional potentials of renal hemodynamics and systemic circulation at large is demonstrated.

[Improved method of equilibrium radionuclide ventriculography].

The commonly used method of static radionuclide ventriculography with a cardiosynchronizer does not permit obtaining a curve of ventricular function over a complete cardiac cycle, especially using computers with a small memory volume. Besides, the final segment of a curve is usually insignificant as a result of variations in a duration of the R-R interval. A method of 2-stage recording of radionuclide ventriculography has been proposed, the second stage being shifted to a certain time interval, i.

[Development of a set of instruments and tools for fixation of facial bones by the Osipov-Ermolaev-Kulagov technic].

A kit of instruments and devices for the fixation of the facial skeleton according to Osipov-Ermolyaev-Kulagov method has been worked out to replace the two manufactured kits of similar purpose. The above kit has parts and devices with higher functional characteristics, the total number of instruments and the cost have been reduced.

[Non-invasive methods of examination in the diagnosis of aneurysms].

Radionuclide angiography and ultrasonic echolocation were used for the examination of 38 patients with aneurysms. Isotope angiography was fulfilled in all the 38 patients, ultrasonography was used in 20 patients. Radionuclide angiography and ultrasonography are thought to be sufficiently effective methods of diagnosis of vessel aneurysms.

[Radiocardiographic evaluation of the hemodynamic effect of mitral commissurotomy at different stages of the postoperative period].

The analysis of hemodynamic effect of closed mitral commissurotomy in 73 patients it different postoperative terms is presented. Within the first day after operation a dramatic hyperfunction of the myocardium was observed in patients with the 3d stage of blood circulation disorders. In patients with the 4th stage of the disease mitral commissurotomy failed to give a positive hemodynamic effect both within the first day and at later terms.