FEATURES OF THE CIRCULATORY SYSTEM IN PEOPLE WITH DIFFERENT HEAT SENSITIVITY
DOI:
https://doi.org/10.11603/1811-2471.2023.v.i1.13719Keywords:
higher heat sensitivity, lower heat sensitivity, global warming, central hemodynamics, peripheral hemodynamicsAbstract
SUMMARY. One of the most urgent threats to humanity is global climate change on the planet. A universal indicator of the adaptive capacity of the human body to this change is the functional state of the cardiovascular system. Therefore, it is important to assess the state of the circulatory system in order to establish mechanisms that ensure high thermal resistance.
The aim – to establish the peculiarities of central and peripheral hemodynamics in people with different heat sensitivity.
Material and Methods. Assessment of central and peripheral blood circulation in pre-established groups of persons with higher and lower heat sensitivity was carried out with the help of the computer complex "Reokom" (NTC HAI-Medyka, Kharkiv, Ukraine) before and after short-term heat exposure.
Results. In the group of people with lower heat sensitivity in the initial state, hypokinetic type of blood circulation was established in 20 % of examinees, eukinetic type in 77 %, and hyperkinetic type in only 3 %. Among the examinees with higher heat sensitivity, the majority of people have a hyperkinetic type of blood circulation (52 %), and the rest have a eukinetic type (48 %). Short-term heat exposure in the group of people with higher heat sensitivity led to a tendency to increase the minute blood volume and cardiac output against the background of a decrease in peripheral resistance. In the group of people with lower thermal sensitivity after short-term exposure to heat, the following was established: all indicators of central hemodynamics slightly decreased, and the total peripheral resistance did not change significantly. In subjects with a higher sensitivity to the heat factor, changes in peripheral hemodynamics in the initial state are characterized by an increase in arterial blood filling of the studied areas and lower vascular tone, compared to individuals with a lower sensitivity to the heat factor. After short-term heat, they have a lower tone and higher elasticity of vessels of medium and small caliber, as well as increased arterial blood filling of the upper extremities. In the group of people with lower heat sensitivity, no significant difference between the indicators of peripheral hemodynamics after short-term heat exposure, compared to the initial data, was established.
Conclusions. The established features of central and peripheral hemodynamics in people with higher and lower heat sensitivity indicate that the cardiovascular system of people with lower sensitivity to the heat factor is characterized by high stability and economy of functioning, regardless of the increase in the average annual temperature of the environment. And in people with higher heat sensitivity, as a result of high energy consumption and tension of the blood circulation system, adaptation processes will sooner fail in the conditions of global warming.
References
Masson-Delmotte, V., Zhai, P., & Pirani, A. (2021). IPCC: Summary for Policymakers. In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press. Retrieved from: https://www.ipcc.ch/report/sixth-assessment-report-working-group-i/.
European State of the Climate 2020. (2020). Copernicus Climate Change Service. Retrieved from: https://climate.copernicus.eu/esotc/2020.
Baevskyi, R.M. (2001). Prognozirovaniye sostoyaniya na grani normy i patologii [Forecasting the state on the verge of norm and pathology]. Moscow: Meditsyna [in Russian].
Glazkov, E.O. (2013). Adaptatyvni mozhlyvosti sercevo-sudynnoyi systemy organizmu studentiv u procesi navchannya u vyshhomu navchalnomu zakladi [Adaptive capabilities of the cardiovascular system of the body of students in the process of studying at a higher educational institution]. Bukovynskyj medychnyj visnyk. – Bukovyna Medical Herald, 17, 2(66), 25-28 [in Ukrainian]. DOI: https://doi.org/10.24061/2413-0737.XVII.2.66.2013.56
Bein, T., Karagiannidis, C., & Quintel, M. (2020). Climate Change, Global Warming, and Intensive Care. Intensive Care Medicine, 46, 485-487. DOI: 10.1007/s00134-019-05888-4. DOI: https://doi.org/10.1007/s00134-019-05888-4
González-Alonso, J. (2012). Human thermoregulation and the cardiovascular system. Experimental Physiology, 97, 340-346. DOI: https://doi.org/10.1113/expphysiol.2011.058701
Charkoudian, N. (2010). Mechanisms and modifiers of reflex induced cutaneous vasodilation and vasoconstriction in humans. J. Appl. Physiol., 109, 1221-1228. Retrieved from: https://journals.physiology.org/doi/epdf/10.1152/ japplphysiol.00298.2010. DOI: https://doi.org/10.1152/japplphysiol.00298.2010
Lim, C.L (2020). Fundamental Concepts of Human Thermoregulation and Adaptation to Heat: A Review in the Context of Global Warming. Int. J. Environ. Res. Public Health, 17, 7795. DOI: 10.3390/ijerph17217795. DOI: https://doi.org/10.3390/ijerph17217795
Miles, Marchand, & Kenneth, Gin (2022). The Cardiovascular System in Heat Stroke. CJC Open, 4(2), 158-163. DOI: 10.1016/j.cjco.2021.10.002. DOI: https://doi.org/10.1016/j.cjco.2021.10.002
Pluess, M. (2015). Individual Differences in Environmental Sensitivity. Child Development Perspectives, 9(3), 138-143. DOI: 10.1111/cdep.12120. DOI: https://doi.org/10.1111/cdep.12120
Obradovic, J., & Boyce, W.T. (2009). Individual differences in behavioral, physiological, and genetic sensitivities to contexts: implications for development and adaptation. Developmental Neuroscience, 31(4), 300-308. DOI: https://doi.org/10.1159/000216541
Pluess, Michael ,Lionetti, Francesca, Aron, Elaine, & Aron, Arthur (2020). People Differ in their Sensitivity to the Environment: An Integrated Theory and Empirical Evidence. PsyArXiv. DOI: 10.31234/osf.io/w53yc. DOI: https://doi.org/10.31234/osf.io/w53yc
Vadzyuk, S.N., Kharkovska, T.V., Huk, V.O., Dzhyvak, V.H., Papinko, I. Y., & Nikitina, I.M. (2022). Prognostic criteria for the selection of individuals with different heat sensitivity. Wiadomosci Lekarskie (Warsaw, Poland: 1960), 75(5, 2), 1370-1375. DOI: 10.36740/WLek202205225. DOI: https://doi.org/10.36740/WLek202205225
Kubichek, W. (1994). Development and evaluation of an impedance cardio output system. Aerospace Med., 37, 1208-1212.
Goncharuk, M.D. (2014). K metodyke opredelenyya typov centralnoj gemodynamyky [To the method of determining the types of central hemodynamics]. Naukovi praci Chornomorskogo derzhavnogo universytetu imeni Petra Mogyly kompleksu Kyievo-Mogylyanska akademiya. Seriya: Texnogenna bezpeka. – Scientific works of the Petro Mohyla Black Sea State University of the Kyiv-Mohyla Academy Complex. Series: Man-made safety, 238, 226, 40-44 [in Ukrainian].
Goncharenko, M.S., & Chykalo, T.M. (2011). Doslidzhennya adaptaciinykh mozhlyvostei ta fraktalnykh kharakterystyk kardiorytmu studentiv Kharkivskoho natsionalnoho universytetu imeni V. N. Karazina z riznymy typamy krovoobihu [Study of adaptive capabilities and fractal characteristics of the cardiorhythm of students of Kharkiv National University named after V. N. Karazin with different types of blood circulation]. Visnyk Kharkivskoho natsionalnoho universytetu imeni V. N. Karazina. Seriya: biolohiya. – Bulletin of Kharkiv National University named after V. N. Karazin. Series: biology, 170-175 [in Ukrainian].
Kryuchko I.O., Petrosyan L.I. & Stencel J.I. Doslidzhennya funkcionalnoho stanu sertsevo-sudynnoyi systemy organizmu lyudyny. [Study of the functional state of the cardiovascular system of the human body]. Skhidnoukrayinskyi natsionalnyi universytet imeni Volodymyra Dalya, Sievyerodonetska bahatoprofilna likarnya – Eastern Ukrainian National University named after Volodymyr Dahl. Severodonetsk multidisciplinary hospital, 97-102 [in Ukrainian].
Bathini, T., Thongprayoon, C., & Petnak, T. (2020). Circulatory failure among hospitalizations for heatstroke in the United States. Medicines (Basel), 7, 32. DOI: https://doi.org/10.3390/medicines7060032
Hausfater, P., Doumenc, B., & Chopin, S. (2010). Elevation of cardiac troponin I during non-exertional heat-related illnesses in the context of a heatwave. Crit. Care, 14, 99. DOI: https://doi.org/10.1186/cc9034
Chen, W.T., Lin, C.H., Hsieh, M.H., Huang, C.Y., & Yeh, J.S. (2012). Stress-induced cardiomyopathy caused by heat stroke. Ann. Emerg. Med., 60, 63-66. DOI: https://doi.org/10.1016/j.annemergmed.2011.11.005
