THE PROPAGATION OF THE TEMPERATURE WAVE IN MYOCARDIUM

Vladyslav Shlykov

Abstract


The method for estimating the rate of propagation of temperature waves in the myocardium during hypothermia and hyperthermia of the heart based on noninvasive temperature control on the heart surface in conditions of cardiopulmonary bypass is proposed. The solution of the heat conduction equation for temperature waves in the myocardium is presented, which allows determining at each point of the medium the temperature change function, as well as the amplitude and phasing velocity of the temperature wave upon cooling and warming of the heart in conditions of cardiopulmonary bypass. The velocity distribution for the temperature field on the surface of the myocardium and in the depth of tissues during the hypothermia and hyperthermia of the heart is obtained.

The thermographic images of the heart during controlled hypothermia and hyperthermia of the heart under cardiopulmonary bypass are obtained. The study of the conditions for spreading the temperature wave in the myocardium is performed, which allows to improve the means of intraoperative protection of vital organs and tools for controlling its effectiveness. The results of introduction of methods of non-invasive temperature control in cardiac surgery and the process of intraoperative cardiac protection in the temperature range from +10°С to +38°С are presented.


Keywords


heart temperature; temperature waves; hypothermia; hyperthermia; cardiopulmonary bypass

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References


Gurev, V., Lee, T., Constantino, J., Arevalo, H., Trayanova, N. A. (2010). Models of cardiac electromechanics based on individual hearts imaging data: Image-based electromechanical models of the heart. Biomechanics and Modeling in Mechanobiology, 10 (3), 295–306. doi: 10.1007/s10237-010-0235-5

Vetter, F. J., McCulloch, A. D. (1998). Three-dimensional analysis of regional cardiac function: a model of rabbit ventricular anatomy. Progress in Biophysics and Molecular Biology, 69 (2-3), 157–183. doi: 10.1016/s0079-6107(98)00006-6

Nickerson, D., Smith, N., Hunter, P. (2005). New developments in a strongly coupled cardiac electromechanical model. Europace, 7, 118–127. doi: 10.1016/j.eupc.2005.04.009

Helm, P. A., Tseng, H.-J., Younes, L., McVeigh, E. R., Winslow, R. L. (2005). Ex vivo 3D diffusion tensor imaging and quantification of cardiac laminar structure. Magnetic Resonance in Medicine, 54 (4), 850–859. doi: 10.1002/mrm.20622

Lunkenheimer, P. P., Redmann, K., Kling, N., Jiang, X., Rothaus, K., Cryer, C. W. et. al. (2006). Three-dimensional architecture of the left ventricular myocardium. The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology, 288 (6), 565–578. doi: 10.1002/ar.a.20326

Vadakkumpadan, F., Arevalo, H., Prassl, A. J., Chen, J., Kickinger, F., Kohl, P. et. al. (2010). Image-based models of cardiac structure in health and disease. Wiley Interdisciplinary Reviews: Systems Biology and Medicine, 2 (4), 489–506. doi: 10.1002/wsbm.76

Helm, P., Beg, M. F., Miller, M. I., Winslow, R. L. (2005). Measuring and Mapping Cardiac Fiber and Laminar Architecture Using Diffusion Tensor MR Imaging. Annals of the New York Academy of Sciences, 1047 (1), 296–307. doi: 10.1196/annals.1341.026

Sivukhin, D. V. (2005). Obshhiy kurs fiziki. Vol. 2. Termodinamika i molekulyarnaya fizika. Moscow: Fizmatlit/MFTI, 544.

Lobasova, M. S., Finnikov, K. A., Milovidova, T. A., Dekterev, A. A., Serebrennikov, D. S., Minakov, A. V. (2009). Teplomassoobmen. Krasnoyarsk: IPK SFU, 295. Available at: http://files.lib.sfu-kras.ru/ebibl/umkd/1536/u_lecture.pdf

Irodov, I. E. (1999). Volnovye protsessy. Osnovnye zakony. Moscow: Laboratoriya bazovykh znaniy, 256.

Pushkareva, A. E. (2008). Metody matematicheskogo modelirovaniya v optike biotkani. Saint Petersburg: SPbGU ITMO, 103.

Kotovskyi, V. Y. (2009). Obgruntuvannia vymoh do umov provedennia termohrafichnykh doslidzhen biolohichnykh ob`yektiv. Visti akademii inzhenernykh nauk Ukrainy, 2 (39), 6–11.

Nicholas, A., Diakides, В., Joseph, D., Bronzino, А. (2008). Medical Infrared imaging. London: CRC Press Taylor Group LLC, 451.

Ghosh, S., Falter, F., Cook, D. J. (Eds.) (2009). Cardiopulmonary Bypass. New York: Cambridge University Press, 207. Available at: https://suny-perfusion-knowledge.wikispaces.com/file/view/Cardiopulmonary+bypass+book+-+Ghosh.pdf

Shlykov, V., Danilova, V., Maksymenko, V., Maryna, S. (2017). Application of Model of Heat Exchange for Miocardium Provided Stationary Convection Laminar Flow. Journal of Cardiology & Current Research, 10 (1). doi: 10.15406/jccr.2017.010.00350

Lokshin, L. S., Lur'e, G. O., Dement'eva, I. I. (1998). Iskusstvennoe i vspomogatel'noe krovoobrashhenie v serdechno-sosudistoy khirurgii. Moscow: Nauchnyy tsentr khirurgii, Rossiyskaya akademiya meditsinskikh nauk, 93.




DOI: http://dx.doi.org/10.21303/2461-4262.2018.00580

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ISSN 2461-4262 (Online), ISSN 2461-4254 (Print)