You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today.

Age and experience-related differences in bloodcirculation functioning of underground coal miners

ISSN 2223-6775 Ukrainian journal of occupational health Vol.17, No 3, 2021


https://doi.org/10.33573/ujoh2021.03.175

Age and experience-related differences in bloodcirculation functioning of underground coal miners

N.A. Bobko1, R.Ya. Yabchanka2
1State Institution «Kundiiev Institute of Occupational Health of the National Academy of Medical Sciences of Ukraine», Kyiv
2Danylo Halytsky Lviv National Medical University, Lviv


Full article (PDF)

Introduction. Every fourth case of acute diseases of the bloodcirculatory system in miners becomes fatal. Arterial hypertension (AH) is classified as an occupational disease. In those employed in underground work, the depth and rate of development of pathological processes exceed those of workers employed on the ground. The reasons for this situation are associated with a complex of harmful and dangerous factors in the working conditions of miners.

The purpose of the research was to identify some age and experience-related differences in bloodcirculation functioning in miners employed at underground coal mining enterprises.

Materials and research methods. 31 miners of 32–58 years (43,5±1,2) with the total work experience of 13–28 years (20,6±0,7), underground shift work experience in the occupation - 8–22 years (15,7±0,7) were measured: heart rate (HR), systolic and diastolic blood pressure (BPS, BPD), height and weight. Haemodynamic indices, Kerdo's (VIK) and bloodcirculatory failure (BFI) indices were calculated, the type of bloodcirculation self-regulation was determined. Data were analyzed at the p<0,05 level.

Results. According to the average group data, BPS and BPD were found in the zone of high norm, HR - at the upper limit of the norm, stroke volume (SV) and cardiac output (CO) - in the zone of the "average" functional state of the bloodcirculatory system, peripheral vascular resistance (PVR) - in the "below average" zone, BFI - in the zone of tension of regulatory systems, VIK - in tendency to parasympathicotonia. 39% of miners showed BP in the zone of moderate AH, 6% - in medium AH, 100% - showed impaired self-regulation of bloodcirculation: 81% - by vascular type, 19% - by cardiac type. With an increase in age and experience, BPS, BPD, mean dynamic pressure, PVR increased, SV, CO decreased, and VIK decreased with age. With an increase in underground work experience, the asymmetry of BPD increased and the asymmetry of BPS decreased in miners. The functional state of the miners' bloodcirculatory system passed into the class of "below average" at the age of 48, with the total work experience of 24 years, and with the underground work experience – of 18 years.

Conclusions. The miners showed an unfavourable state of the bloodcirculatory system: in 45% - increased BP corresponded to AH, in 100% of the examined - impaired self-regulation of blood circulation, which is considered as a risk factor for the development of AH. The early transition of the functional state of the bloodcirculatory system to the "below average" class reflects the pronounced adverse effect of working conditions. An increase in BPD asymmetry and a decrease in BPS asymmetry (p<0,05) with an increase in underground work experience can be associated with the involvement of specific mechanisms of adaptation to work, in particular, cardiorenal. The identified isolated age-related increase in parasympathicotone is not consistent with the population norm and indicates the presence of adverse effects of a non-production origin, reflecting the need for comprehensive preventive measures to improve the working and living conditions of miners to extend their occupational longevity.

Key words: miners, underground work, shift work, night work, hypertension, parasympathicotonia, functional state of the bloodcirculatory system, harmful and dangerous working conditions.

References

  1. Statystychnyy shchorichnyk Ukrayiny 2019.[Statistical Yearbook of Ukraine 2019]. The State Statistics Service of Ukraine, edited by I.Ye. Verner. Kyiv, 2020, 465 p. http://ukrstat.gov.ua/druk/publicat/kat_u/2020/zb/11/zb_yearbook_2019.pdf
  2. Bukhtiyarov I.V., Golovkova N.P., Khelkovskiy-Sergeyev N.A., Kotova N.I. (2018). "Causes and measures to prevent the sudden death of workers in mines during coal mining." Aktual'nyye problemy meditsiny truda : Sbornik trudov instituta [Actual problems of labour medicine: A collection of works of the Institute]. 1, 341-350. https://doi.org/10.31089/978-5-907035-94-2-2018-1-341-350
  3. Karabalin S.K., Karabayeva R.Zh., Mazhitov T.M.(2009). "Production conditionality of arterial hypertension in miners."Byulleten' Vostochno-Sibirskogo nauchnogo tsentra SO RAMN. 1, 118-121.
  4. Ustinova O.Yu., Vlasova Ye.M., Nosov A.Ye., Kostarev V.G., Lebedeva T.M. (2018). "Assessment of the risk of cardiovascular disease development in miners engaged in underground mining of chrome ore".Analiz riska zdorov'yu. 3, 94-103. https://doi.org/10.21668/health.risk/2018.3.10
  5. Shlyapnikov D.M., Shur P.Z., Vlasova Ye.M., Alekseyev V.B., Lebedeva T.M. (2015). "Occupational risk to develop the circulatory system diseases in workers employed in underground mining."Meditsina truda i prom. ekologiya, 8, 6-9.
  6. Babanov S.A. (2020). Professional'nyye porazheniya serdechno-sosudistoy sistemy rabotnikov.[ Occupational damage to the cardiovascular system of workers.]GBOU VPO «Samarskiy gosudarstvennyy meditsinskiy universitet» MZ RF. 12 p. https://www.trudcontrol.ru/press/publications/25775/professionalnie-porazheniya-serdechno-sosudistoy-sistemi-rabotnikov
  7. Maksimov S.A., Skripchenko A.Ye., Artamonova G.V. (2014). "Comparative analysis of the prevalence of cardiovascular risk factors in miners in Western Siberia with all-Russian data."Profilakticheskaya meditsina, 2, 30-34.
  8. Kérdö, I.(1966), "Ein aus Daten der Blutzirkulation kalkulierter Index zur Beurteilung der vegetativen Tonuslage von I. Kérdö", Acta neurovegetativa, 29 (2), 250-268. https://doi.org/10.1007/BF01269900
  9. Khramov, Yu. A. and Veber, V. R. (1985), Vegetativnoye obespecheniye i gemodinamika pri gipertonicheskoy bolezni[Vegetative maintenance and hemodynamic under hypertensive disease], Nauka, Novosibirsk, Russia.
  10. Arinchin, N. I. and Kulago, G. F. (1969), Gipertonicheskaya bolezn' kak narusheniye samoregulaytsii krovoobrascheniya [Hypertensive disease as a disorder of blood circulation], Nauka i tekhnologiya, Minsk, Belarus.
  11. Chalmers, J., MacMahon, S., Mancia, G., Whitworth, J., Beilin, L., Hansson, L., Neal, B., Rodgers, A., Ni Mhurchu, C. and Clark, T. (1999), "World Health Organization-International Society of Hypertension Guidelines for the management of hypertension. Guidelines sub-committee of the World Health Organization",Clin. Exp. Hypertens., 21(5-6), 1009-1060. https://doi.org/10.3109/10641969909061028
  12. Buzunov, V. A. (1991),Proizvodstevennye factory i vozrastnaya rabotosposobnost' [Production factors and aged work ability], Zdorov'ya, Kiev, Ukraine.
  13. Bobko, N. A. (2002), "State of the cardiovascular system in electricity distribution network controllers", Meditsina truda iprom. ekologiya, 3, 8-12.
  14. Cheremisina, A. Yu., Saifutdinov, R. G. and Ismagilov, M. F. (2013), "Comparative analysis of parallel double daily monitoring of arterial blood pressurein shoulder arteries in patients with hypertension of the I, II stages", Vestnik sovremennoy klinicheskoy meditsiny, 6 (5), 31-34. https://doi.org/10.20969/VSKM.2013.6(5).31-34
  15. Pul's cheloveka: norma po vozrastam [Human pulse: the norm for ages]. https://puls-msk.ru/puls-cheloveka/
  16. Tebenova, K. S., Ilyasova, B. I., Zarkenova, Zh. T. and Zarkenova, L. S. (2015), "Functional state of the bloodcirculatory system in employees of video display terminals in shift dynamics". Uspekhi sovremennogo yestestvoznaniya, 1, 382-387.
  17. Vorona, A.A., Golovkina, O.L., Matyukhin, V.V., Yushkova, O.I. (1999), "Influence of occupational factors on the clinical and physiological status of persons working with video display terminals",Meditsina truda i prom. ekologiya, 7, 25-28.
  18. Tkachenko L. M., Perederiy H. S. (2000), "Vegetative correlates of emotional stress in persons with different states of the autonomic nervous system",Fiziolohichnyy zhurn, 46 (6), 61-67.
  19. Sato,S., Taoda, K., Kawamura, M., Wakaba, K., Fukuchi, Y., Nishiyama, K. (2001), "Heart rate variability during long truck driving work". J. Hum. Ergol. 30, 1-2, 235-240.
  20. ShadetovaA.Zh., Kaliyeva I.A., Alshynbekova G.K., Shokabayeva A.S. (2016), "Pre-nosological status of the population living in the Aral Sea region" Nauchnoye obozreniye. Meditsinskiyenauki. 3, 142-144. https://science-medicine.ru/ru/article/view?id=901.
  21. Bobko N.A., Dovgopola S.P. (2021). "Biological age and cognitive functions in surgeons under round-o-clock duties". Ukrainian Journal of Occupational Health, 17 (1, 66), 35-52. https://doi.org/10.33573/ujoh2021.01.035
  22. Bobko N.A. (2010). "Age changes in mental activity and blood circulation in human-operators of intense shift work". Problemy stareniya i dolgoletiya, 19 (1), 66-89.
  23. Martynova N.A., Kislitsyna V.V. (2017). "Occupational morbidity in miners (literature review)"Zdorov'ye. Meditsinskaya ekologiya. Nauka. 5, 46-52. https://doi.org/10.5281/zenodo.1115460
  24. Frol'kis V.V., Shevchuk V.G. (1982). "Hemodynamics and its regulation during aging". Fiziologicheskiye mekhanizmy stareniya [Eds: D. F. Chebotarev, V. V. Frol'kis]. Leningrad, Nauka, 107-119.
  25. Ferrari A.U. (2002). "Modifications of the cardiovascular system with aging." Am. J. Geriatr. Cardiol. 11 (1), 30-33. https://doi.org/10.1111/1467-8446.00044-i1
  26. Melent'yev A.V., Denisova Ye.A. (2015). "Developmen of cardiorenal pathology in workers in contact with the noise and vibration factor", Meditsina truda i prom. ekologiya, 9, 93-94.