[The morphofunctional transformation of skeletal muscle as a consequence of electroneurostimulation training].

By means of histological and histochemical methods slices of biopsies of the canine musculus latissimus dorsi have been investigated after electroneurostimulation for three months through the thoracodorsal nerve in situ and after cutting its initial part. Frequency of contractions increases gradually from 30 up to 80 per 1 min every 2 weeks. The preparations are stained with hematoxylin--eosin.

[Development of a technic and methodology of myoventriculoplasty using programmable cardio-synchronized electro-neurostimulation].

The present work provides the basis for the technique of myoventriculoplastics, first applied in this country, with the use of programmable cardiosynchronized electroneuropacing. The characteristics of a first Soviet implantable electroneuropacemaker, and original electrodes for electrostimulation of the neuromuscular tissue is presented and the surgical technique suggested. Data of 25 experiments on 8 dogs are included.

[Elaboration of criteria for selection of patients with chronic ischemic heart disease for direct myocardial revascularization surgery].

Indications for direct myocardial revascularization were specified on the basis of a new parameter: the disrupted myocardial blood supply zone (DBSZ). Absolute indications for the procedure included: a more than 50% narrowing in the diameter of the main trunk of the left coronary artery; two or 3 vessels affected with the DBSZ accounting for at least 75% of the left-ventricular and interventricular-septum weight. Relative indications included: two or three affected vessels with the DBSZ covering between 50 and 75% of the left-ventricular and interventricular-septum weight; and a more than 50% isolated proximal narrowing of the diameter of the anterior interventricular branch with any type of coronary blood supply, of the right coronary artery, with types 10:10 and 11:9, and of the circumflex branch, with types 5:15 and 6:14.

[Electrodes for epicardial electrical mapping].

Medical-technical characteristics of electrodes for epicardial mapping are examined. Most electrodes are bipolar. The differences between them lies either in the contact configuration or in the fixation mode.

[Methodological problems of quantitative and combined evaluation of the asynergy and volume of the left heart ventricle by contrast ventriculography in patients with ischemic heart disease].

Regional analysis was performed in 24 patients with various forms of left ventricular (LV) asynergy. Three quantitative methods of regional analysis with different types of superposition (SP) of end-phasic contours (EPC) were compared: the radial method, taking into account the dislocation of basal structures, was more sensitive (p less than 0.02) in detecting apical asynergy, as compared to the chordal method, or the radial procedure using a different type of SP.