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Biomedical subjects

V M Bol'shov

Publications and source records attributed to V M Bol'shov.

13 recordsLinked to original sources
PubMed1977

[Determination of cardiac output by the method of tetrapolar chest rheography and evaluation of its metrological possibilities].

Tetrapolar chest rheography is an up-to-day, convenient and bloodless method of determining the cardiac stroke volume (CSV) and cardiac output (CO) in dynamic observations. The paper presents and analysis of the method and considers the possibilities and limits of its application in determining the stroke volume and cardiac output. Advantages of the Kubicek procedure as modified by the authors by comparison with other rheographic methods are shown, along with methodological procedures employed for dtermining the CSV and CO and a nomogram that significantly facilitates the calculation of the values under study is offered. Results of contrasting the cardiac ejection values in patients with congenital heart diseases and an increased pulmonary circulation as against those in patients with ischemic heart disease, obtained by means of tetrapolar chest rheography and direct Fick's method are cited. The possibility of applying tetrapolar chest rheography in assessing the effect operative treatment in patients with congenital cardiac defects and also when investigating compensatory reactions of the cardio-vascular system in patients with hypertensive disease in the course of the orthostatic and Valsalva tests is demonstrated.

Adult↗
PubMedDate not supplied

[The Pulma-01 automated microprocessor system for testing external respiratory function].

The automated system consisting of a pneumotachographic transducer, a differential pressure gauge, a precision amplifier and a microcomputer with a built-in printer is designed for the analysis of 20 main indices of external respiration functioning during forced expiration. It evaluates the measured data, compares them with the normal values and automatically diagnoses the pulmonary disease type.

Computers↗
PubMedDate not supplied

[KS-02 cardiosignal indicator].

Considerations are given as to principles of designing KC-02 indicator of electrocardiosignals. It provides continuous monitoring of cardiac activity based on examinations of rhythm patterns on ECG-recording.

Electrocardiography↗
PubMedDate not supplied

[Automatic instrument for measuring blood pressure indirectly].

The PPB-01 automatic blood pressure meter is recommended to ease the medical staff efforts, provide higher accuracy, and ability to further data input in the devices for automatic processing of biomedical information. Its functioning is based on variation of the slope of positive pulse-wave part. The meter features a high noise immunity and permits measurement at a moderate motor activity.

Blood Pressure Determination↗
PubMedDate not supplied

[Evaluation of linear distortions in rheography].

Methods permitting to estimate parameters of hemodynamics through bioimpedance measurements have gained ground in study and diagnosis of the cardiovascular system. The error in bioimpedance measurement depends considerably on dynamic characteristics of the measuring devices being employed. The dynamic characteristics can be investigated by the method evaluating linear distortions. A relation can be established between these characteristics and errors of measuring major informative parameters of a rheographic signal.

Fourier Analysis↗