DEVELOPMENT OF AN ALGORITHM FOR THE FUNCTIONING OF THE SYSTEM TO DETERMINE ACHIEVING THE EFFECT OF TRANSMURALITY 

Antipenko Vladimir Viktorovich, postgraduate student, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: v.antipenko7@yandex.ru
Kulkov Vladimir Nikolaevich, director of Aniko LLC (build. 1 Tsentral'naya street, Penza, Russia), E-mail: kulkov_v@mail.ru
Pecherskaya Ekaterina Anatolevna, doctor of technical sciences, associate professor, head of sub-department of information and measuring equipment and metrology, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: pea1@list.ru
Antipenko Svetlana Anatolevna, engineer, PIC «Electropribor» (69 Pobedy avenue, Penza, Russia), E-mail: zarsveta5@gmail.com 

615.47.144 

10.21685/2307-5538-2020-4-11 

Background. The main methods for determining the achievement of the effect of transmurality of biological tissue are to measure the temperature in the area of exposure to the electrodes and the impedance between the electrodes. These methods have significant drawbacks associated with poor quality heating of the fabric. The aim of this work is to develop an algorithm for determining the achievement of the effect of transmurality, which allows to achieve high-quality heating of the inner layers of tissue and to determine the effect of achieving transmurality in a shorter time.
Materials and methods. In this work, a number of experiments have been carried out, proving that the effectiveness of the effect on the ablated tissue and the quality of the result obtained depend on the correct choice of power applied to the treated biological tissue.
Results. On the basis of the experiments, an algorithm for the functioning of the system was developed to determine the achievement of the transmural effect, capable of controlling additional parameters. In particular, the control and regulation of the rate of tissue heating is carried out, the volume of the processed tissue is estimated, the required amount of energy for heating a certain volume of tissue is calculated, and the compliance of the actually consumed amount of energy with the calculated one is monitored.
Conclusions. The developed algorithm allows you to obtain high-quality heating of the inner layers of tissue and determine the effect of achieving transmurality in a shorter time, which is extremely important when performing operations using artificial circulation. The obtained results allow to identify the moment and fact of transmural myocardial lesion with higher reliability. 

transmurality, electrode, tissue impedance, radiofrequency ablation method