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Results of development of an experimental external electric defibrillator with programmable pulse shape are described. The defibrillator can be used for experimental determination of the optimal shape of defibrillation pulse.

Comparative assessments of the efficiency and noise immunity of the algorithms detecting the shock cardiac rhythms (SCR) are described in the paper. It is suggested to use the rejection filter of ventricular fibrillation as the principle algorithm for the SCR detection in an automated external defibrillator. The use of the method combining the after-threshold interval and the method of spectral analysis is demonstrated to be preferable for a portable external defibrillator.

There is a comparison of parameters of different-form bipolar pulses for external electric defibrillators described in the paper. The electric schemes of generators used in pulse shaping are elucidated; the appropriate recommendations concerning their choice are defined.

A comparative study of the energy efficiency of three known versions of chopping-modulated defibrillation pulses was carried out using the hypothesis of guaranteed defibrillation and the ten Tusscher−Panfilov 2006 cardiomyocyte model subjected to simulated fibrillation. The results of the study showed that the unmodulated equivalent of a chopping-modulated defibrillation pulse has lower threshold energy of guaranteed defibrillation than the chopping-modulated pulse itself. In addition, the ratio of the threshold energy of guaranteed defibrillation of the chopping-modulated pulse to the threshold energy of its unmodulated equivalent is approximately equal to the reciprocal of the modulation duty cycle. Based on this, it can be assumed that the use of chopping modulation for defibrillation pulse shaping leads to a decrease in its energy efficiency. [ABSTRACT FROM AUTHOR]

The main biographic details and scientific activity of the Russian electrophysiologist B. M. Tsukerman (1920-2007), who made an enormous contribution to the development and clinical introduction of the electroimpulse method of treating supraventricular arrhythmias, are presented. [ABSTRACT FROM AUTHOR]

The research and education complex for personnel training and basic and applied science research established at the Biomedical Systems Department of the National Research University of Electronic Technology is described. Advances achieved by the department are listed. [ABSTRACT FROM AUTHOR]