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Biomedical subjects

A M Rybakov

Publications and source records attributed to A M Rybakov.

10 recordsLinked to original sources
PubMedDate not supplied

[Standardization of the resistance of grounded electrocardiographs with patient circuits ground-insulated to electrical cophase interferences from an external main].

The possibility of simulating conditions for electrocardiographic interferences examination by current and voltage generators is shown. These two models allow it to adopt for appraising the resistance of electrocardiographs to outside cophasic electric interferences any one of the two equivalent parameters, viz. "the equivalent resistance of cophasic interferences" and "coefficient of cophasic rejection". The said parameters represent the relation between the differential value of the interferences voltage at the inlet of the electrocardiograph and the interferences current and interferences voltage of the current generators and of the interverences voltage that produced the former, respectively. The required magnitudes for these parameters have been found, namely less than or equal to 14 Om and 0.5-10(-6) V. For practical purposes it is preferable to use the coefficient of cophasic rejection.

Electric Conductivity↗
PubMedDate not supplied

[Experimental assessment of the resistance of grounded electrocardiographs to outside line electrically synphasic interference].

By studying the problem of the electrocardiographs resistance to synphasic interferences it became possible to recommend measuring the noise-stability through the use of an equivalent resistor of synphasic noises and by applying the coefficient of synphasic rejection. Patterns for measurement of these parameters are proposed and several measuring circuit assessed. Principles underlying search for quantitative values for parameters of electric skin resistances used in the circuits are given.

Electrocardiography↗