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Biomedical subjects

A L Matevosov

Publications and source records attributed to A L Matevosov.

At least 19 recordsLinked to original sources
PubMed1991

[Predicting the volume and hemodynamic outcome of radical correction of tetralogy of Fallot on the basis of angio- morphometry].

Using the findings from angiographic examination of 91 patients with Fallot's tetrad, the authors developed an angiomorphometric protocol which may predict the feasibility of radical correction of the defect prior to an operation and hemodynamic parameters in the immediate postoperative period, peak right/left ventricular systolic pressure ratios, in particular. The reasons for discrepancy of estimated and measured right/left ventricular systolic pressure ratios were defined and their time course was followed up 12 hours after radical Fallot's tetrad correction in relation to the type of plastic operations.

Adolescent↗
PubMed1990

[Combined roentgenoendovascular and direct surgical procedures in the treatment of chronic ischemia of the lower extremities].

The article analyses the results of combined radiologically-guided and direct surgical operations in 27 patients suffering from chronic ischemia of the lower with multiple affections of the limb arteries. All had concomitant diseases. The radiologically guided intervention was carried out before or after a reconstructive operation. Owing to such a combination the volume of the reconstruction was reduced and its level lowered, better conditions were created for its performance, and, in some cases, correction of complications of surgical operations by the methods of radiologically-guided endovascular dilatation made it possible to avoid a repeated full-volume intervention.

Arterial Occlusive Diseases↗
PubMed1988

[Roentgeno-endovascular dilatation of the brachiocephalic arteries].

The article describes the technique of radiological endovascular dilatation (RED) of stenosed brachicephalic arteries. RED was attempted in 28 arteries (18 subclavian, 7 vertebral, 2 common carotid and 1 internal carotid) in 22 patients. In one patient RED of the third portion of the left subclavian artery was supplemented with endovascular prosthesis--transcutaneous transcatheter introduction at the site of the previous stenosis of a spiral-shaped prosthesis from nitinol (a nickel-titanium alloy). Technically good results of dilatation was achieved in 21 of the 22 patients, clinical effect in 20 patients. Some angiographic criteria of the selection of patients for RED of the brachicephalic arteries are described.

Adult↗
PubMed1985

[Effectiveness of roentgeno-endovascular dilatation in the treatment of renovascular hypertension].

The techniques and methodology of roentgeno-endovascular dilatation, used as part of the treatment for renovascular hypertension in 50 patients with 66 arterial stenoses of varying etiology, are described. The factors that may affect the efficacy of the procedure are discussed: the duration and etiology of the disease, stenosis localization, the number of affected renal arteries, plasma renin activity in renal veins, the dilating catheter used, etc. The stenosed portion of an artery could not be passed in 4 patients. In 38 (82.6%) of 46 patients, whose stenosed renal arterial segments were successfully passed and roentgeno-endovascular dilatation was attempted, systemic arterial BP eventually returned to normal or diminished.

Adolescent↗
PubMed1979

[So-called coronary angiographic paradoxes].

The results of examination of 25 patients (18 with ischemic heart disease and 7 with cardialgia of other etiology) are discussed. The arteriolo-capillary bed of the coronary arteries was studied by intraarterial injection of albumin aggregates labelled with radioactive isotopes. A correlation was revealed between the degree of microcirculatory disorders and the results of electrocardiography. With increase in the degree of microcirculatory disorders, cicatricial changes in the left ventricular myocardium were found more frequently and a history of myocardial infarction (in 11 persons) and the development of left ventricular aneurysm (in 2 patients) were noted. Certain indices of integral function (EF, VcF, MNSER) and regional contractility (% delta r, L) of the left ventricle were determined in 14 patients. Among these parameters characterizing left ventricular function (EF, VCF, MNSER, % delta r, L), VCF, MNSER, and % delta r, L are most sensitive. No correlation was revealed between the state of the myocardial microcirculation bed and EF, VCF, and MNSER, but a definite correlation was found between it and % delta r, L (in the form of regional hypo- and hyperkinesia and paradoxical pulsation). Normal coronary arteriograms do not exclude the presence of ischemic heart disease and other primary diseases of the myocardium. Patients of this category should be examined more scrupulously to detect disorders of blood supply to the myocardium and function of the left ventricle.

Coronary Angiography↗