PubMed Health⌕ Search

Biomedical subjects

M P Ivanova

Publications and source records attributed to M P Ivanova.

14 recordsLinked to original sources
PubMed1979

[Conditions controlling the development of distant intercellular interactions during ultraviolet radiation].

The study is concerned with ascertaining the role of UV radiation in distant intercellular interactions (DII) and the conditions resulting in "MIRROR" CYTOPATHIC EFFECT ("M" CPE). It has been found that the UV radiation-induced extreme state of the cells in a radiant culture produces distantly in an intact detector culture, which has only an optic contact with it, the cytopathic effect (CPE) as a repercussion of a specificity of morphological manifestations imprinted in the affected culture. UV preparadiation of the detector cells aids in manifestation of the "mirror" CPE.

Adenoviruses, Human↗
PubMedDate not supplied

[Sevoflurane inhalation anesthesia for short surgical interventions].

Sevoflurane, a new halogen inhalation anesthetic for mononarcosis, was used in 33 patients aged 22-57 years subjected to noncavitary general surgical and urological operations lasting for 50 +/- 9 min. Induction anesthesia consisted in sevoflurane inhalation in a semi-open contour. The anesthetic was delivered first in a dose of 0.2 vol% which was increased to 3-4 vol% by the end of induction (1.5-1.8 MAC). Laryngeal mask was used in 28 patients, in the rest tracheal intubation was carried out after succinyl choline. Maintenance dose of sevoflurane was 2-3 vol%. Electrocardiogram was recorded and arterial pressure monitored by indirect methods, pulse oxymetry and capnography were carried out. For evaluating the probable toxic effect, serum levels of total bilirubin, SGPT, creatinine, alkaline phosphatase, urea, albumin, potassium, and sodium were measured. Sevoflurane did not suppress the respiration and allowed assisted ventilation of the lungs, if necessary. No appreciable changes in the hemodynamics were observed, though heart rate was to be monitored. There were no biochemical shifts indicative of hepatic or renal involvement. Sevoflurane is recommended for total anesthesia in short non-cavitary interventions as mononarcosis, that is, such anesthesia requires virtually no extra narcotics, neuroleptics, or ataractics.

Adult↗
PubMedDate not supplied

[The component composition of the human cortical motor potential during static muscle loading].

In summation and averaging of sections of the EEG of sensorimotor cortex of both cerebral hemispheres recorded during human static effort of definite duration, a complex of negative-positive oscillations was observed. These oscillations appear before the beginning of the effort, accompany its execution and finishing and are also recorded after cessation of muscles activity. Before the beginning, the potential of readiness is formed. The execution of the effort is accompanied by a slow negative wave which in some people may be broken by a pronounced positivity. Further a "final" potential appears; its fast positive oscillation is formed before the end of the effort, and a slow negative wave in which it turns, appears only after muscles relaxation.

Adult↗
PubMedDate not supplied

[Readiness potential during tracing movements].

Readiness potential (RP) has been defined in EEG recorded in the sensorimotor human cortex during tracing movements. RPs which appear prior to the tracing of different programmes, differ in the time of their appearance, duration and amplitude. Dependence has been established between the RP amplitude and tracing movements latency: movements latency is lower at higher RP amplitudes, and vice versa.

Brain↗
PubMedDate not supplied

[Cortical motor potential associated with voluntary termination of a movement].

The data are presented on potentials revealed by averaging buman EEG sections recorded during termination of a motor act. The potential consisted of two components: fast positivity and slow negative wave. The complex under study was named "final" or "relaxation" potential. The latency of the "final" potential and that of the muscle relaxation were linearily related. The potential was recorded only in cases when the relaxation of all muscles involved was necessary for a motor task solving at movement termination. If some groups of muscles relaxed and the other ones contracted the potential was not recorded.

Adolescent↗