Search PubMed⌕ Search

Biomedical subjects

V V Popov

Publications and source records attributed to V V Popov.

At least 73 records · Page 4Linked to original sources
PubMed1979

[Cancer of the gallbladder].

Clinical observations in 25 patients with cancer of the gallbladder are described. Tumor of this localization, as a rule, is characterized by a latent course with symptoms of cholelithiasis, chronic cholecystitis, manifested by jaundice and signs of neoplasia only ar later stages. Special attention is given to a frequent association of gallbladder cancer with an acute inflammatory process. The prophylaxis against gallbladder cancer is early surgery for cholelithiasis.

Aged↗
PubMed1977

[Diagnosis and treatment of internal biliary fistulas].

In the paper the diagnostic and therapeutic policy employed in 11 patients with internal biliary fistulas, most frequently caused by cholelithiasis, is analysed. Some aspects of the preoperative diagnosis are eluciadated, and it is concluded that patients with internal biliary fistulas are to be treated surgically: cholecystectomy, suturing of defects in the gastric and intestinal wall, the drainage of bile tracts.

Aged↗
PubMed1976

[Detemination of the hearing characteristics of the dolphin by the evoked potential method].

The evoked potentials were recorded in the dolphin Tursiops truncatus auditory cortex with implanted electrodes. Thresholds of the responses to sounds (clicks, noises and tones) ranged from 10(-2) to 10(-3) Pa. Noises evoked potentials with the lowest threshold of about 1-10(-3) Pa. The evoked responses were elicited both by on and off sound effects as well as by change of the sound intensity or frequency. The thresholds of responses to changes of intensity were about 0.6-0.8 db (7-10%); those of responses to changes of frequency were about 0.25%. The temporal summation could be observed up to 20 msec.

Animals↗
PubMed1975

The influence of variable gravitational fields on the embryonic development of some ecaudate amphibians.

The fertilized eggs of the frog Rana temporaria immediately after fertilization were rotated on a clinostat in the vertical plane at the rate of 0.66 rotations per minute with a radius of 20 mm for 2.5 hours. A wide spectrum of developmental anomalies was found (33% in the experiment, 14% in the control) which, in the authors' opinion, result from abnormalities in the cortical reaction of symmetrization. These abnormalities manifest themselves in the irregular distribution of cortical pigment and in eccentric division lines.

Animals↗