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Pre-deployment Heat Acclimatization Guidelines for Disaster Responders

Published online by Cambridge University Press:  09 December 2015

Matt B. Brearley
Matt B. Brearley*
Affiliation:
Disaster Medicine Research, National Critical Care and Trauma Response Centre, Darwin, Northern Territory, Australia
*
Correspondence: Matt Brearley, PhD, BHMS(Hons), BBus National Critical Care and Trauma Response Centre Royal Darwin Hospital Rocklands Drive, Tiwi Northern Territory, Australia 0810 E-mail: matt.brearley@nt.gov.au
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Abstract

Introduction

Minimal preparation time is a feature of responding to sudden onset disasters. While equipment and supplies are prepared for deployment at short notice, less is known of the physical preparation of medical responders. With many disaster-prone areas classified as tropical regions, there is potential for responders to endure a combination of high ambient temperatures and relative humidity during deployment. Heat acclimatization, defined as the physiological and perceptual adaptations to frequent elevations of core body temperature (Tc), is a key strategy to improve tolerance of hot conditions by medical responders.

Methods

Pre-deployment heat acclimatization guidelines were developed based upon the duration of physical training and the subjective rate of perceived exertion (session RPE). An objective of individual training sessions was the perception of body temperature as warm to hot. The guidelines were implemented for Team Bravo (2nd rotation) of the Australian Medical Assistance Team (AusMAT) deployed to Tacloban, Philippines following Typhoon Haiyan in November 2013. The guidelines were distributed electronically five to seven days prior to deployment and were followed by a consultation. A group training session in hot conditions was undertaken prior to departure.

Results

The AusMAT responders to utilize the guidelines were based in cool or temperate climates that required extra layers of clothing, training during warmer parts of the days, or warm indoor conditions to achieve session objectives. Responders reported the guidelines were simple to use, applicable to their varied training regimens, and had improved their confidence to work in the heat despite not completing the entire 14 day period.

Conclusion

The pre-deployment heat acclimatization guidelines provided AusMAT responders the ability to quantify their physical training and promoted physiological adaptations to maximize health, safety, and performance during deployment. While maintaining year-round heat acclimatization is considered essential for medical responders, these guidelines may facilitate beneficial adaptations once notified of deployment.

BrearleyMB. Pre-deployment Heat Acclimatization Guidelines for Disaster Responders. Prehosp Disaster Med. 2016;31(1):85–89.

Keywords

deploymentdisasterguidelinesheat acclimatizationthermal
Type
Special Reports
Information
Prehospital and Disaster Medicine , Volume 31 , Issue 1 , February 2016 , pp. 85 - 89
Copyright
© World Association for Disaster and Emergency Medicine 2015 

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References

1. United Nations. Statistical Yearbook for Asia and the Pacific 2014, http://www.unescap.org/resources/statistical-yearbook-asia-and-pacific-2014. Published 2014. Accessed May 4, 2015.Google Scholar
2. Dellinger, AM, Kachur, SP, Sternberg, E, Russell, J. Risk of heat-related injury to disaster relief workers in a slow-onset flood disaster. J Occup Environ Med. 1996;38(7):689-692.CrossRefGoogle Scholar
3. Mori, K, Tateishi, S, Hiraoka, K, et al. How occupational health can contribute in a disaster and what we should prepare for the future-lessons learned through support activities of a medical school at the Fukushima Daiichi Nuclear Power Plant in summer 2011. J Occup Health. 2013;55(1):6-10.CrossRefGoogle Scholar
4. Rusiecki, JA, Thomas, DL, Chen, L, Funk, R, McKibben, J, Dayton, MR. Disaster-related exposures and health effects among US Coast Guard responders to Hurricanes Katrina and Rita: a cross-sectional study. J Occup Environ Med. 2014;56(8):820-833.CrossRefGoogle ScholarPubMed
5. Li, X, Hou, S, Zheng, J, Fan, H, Song, J. Post-disaster medical rescue strategy in tropical regions. World Journal Emerg Med. 2012;3(1):23-28.CrossRefGoogle ScholarPubMed
6. Aitken, P, Leggat, P, Robertson, A, Harley, H, Speare, R, Leclercq, M. Health and safety aspects of deployment of Australian disaster medical assistance team members: results of a national survey. Travel Med Infect Dis. 2009;7(5):284-290.CrossRefGoogle ScholarPubMed
7. Coatsworth, NR. The Australian medical response to Typhoon Haiyan. Med J Aust. 2014;201(11):632-634.CrossRefGoogle ScholarPubMed
8. Brearley, M, Harrington, P, Lee, D, Taylor, R. Working in hot conditions-a study of electrical utility workers in the northern territory of Australia. J Occup Environ Hyg. 2015;12(3):156-162.CrossRefGoogle ScholarPubMed
9. Walker, A, Driller, M, Brearley, M, Argus, C, Rattray, B. Cold-water immersion and iced-slush ingestion are effective at cooling firefighters following a simulated search and rescue task in a hot environment. Appl Physiol Nutr Metab. 2014;39(10):1159-1166.CrossRefGoogle Scholar
10. Brearley, M, Norton, I, Trewin, T, Mitchell, C. Fire fighter cooling in tropical field conditions. National Critical Care and Trauma Response Centre. http://www.territorystories.nt.gov.au/bitstream/10070/252355/1/Fire%20Fighters%20Report%20Final.pdf. Published 2011. Accessed May 4, 2015.Google Scholar
11. Brearley, M, Ruskie, S. Development of a disaster nurse well-being instrument. Prehosp Disaster Med. 2015;30(Supplement 1):s116.Google Scholar
12. Kampmann, B, Bröde, P, Schütte, M, Griefahn, B. Lowering of resting core temperature during acclimation is influenced by exercise stimulus. Eur J Appl Physiol. 2008;104(2):321-327.CrossRefGoogle ScholarPubMed
13. Burk, A, Timpmann, S, Kreegipuu, K, Tamm, M, Unt, E, Oöpik, V. Effects of heat acclimation on endurance capacity and prolactin response to exercise in the heat. Eur J Appl Physiol. 2012;112(12):4091-4101.CrossRefGoogle ScholarPubMed
14. Yamazaki, F, Hamasaki, K. Heat acclimation increases skin vasodilatation and sweating but not cardiac baroreflex responses in heat-stressed humans. J Appl Physiol. 2003;95(4):1567-1574.CrossRefGoogle Scholar
15. Armstrong, CG, Kenney, WL. Effects of age and acclimation on responses to passive heat exposure. J Appl Physiol. 1993;75(5):2162-2167.CrossRefGoogle ScholarPubMed
16. Pandolf, KB, Burse, RL, Goldman, RF. Role of physical fitness in heat acclimatization, decay and re-induction. Ergonomics. 1977;20(4):399-408.CrossRefGoogle Scholar
17. Brearley, M, Norton, I, Hutton, M, Rush, D, Smith, S, Fuentes, H. Urban search and rescue operations in tropical climates. Paper presented at: Bushfire and Natural Hazards CRC and AFAC Wellington Conference; September 2-4, 2014; Wellington, New Zealand.Google Scholar
18. Acclimatization. Centers for Disease Control and Prevention Web site. http://www.cdc.gov/niosh/topics/heatstress/acclima.html. Accessed May 4, 2015.Google Scholar
19. Read, DJ, Holian, A, Moller, CC, Poutawera, V. Surgical workload of an Australian foreign medical team after Typhoon Haiyan. ANZ J Surg. Epub ahead of print May 2015. doi: 10.1111/ans.13175.CrossRefGoogle Scholar
20. Chueng, S. Advanced Environmental Physiology. Champaign, Illinois USA: Human Kinetics; 2010.Google Scholar
21. International Organization for Standardization. ISO 9886:2004(E). Geneva, Switzerland; 2004.Google Scholar
22. Gagge, AP, Stolwijk, JA, Hardy, JD. Comfort and thermal sensations and associated physiological responses at various ambient temperatures. Environ Res. 1967;1(1):1-20.CrossRefGoogle ScholarPubMed
23. Lim, CL, Chung, KK, Hock, LL. The effects of prolonged passive heat exposure and basic military training on thermoregulatory and cardiovascular responses in recruits from a tropical country. Mil Med. 1997;162(9):623-627.CrossRefGoogle ScholarPubMed
24. Foster, C, Florhaug, JA, Franklin, J, et al. A new approach to monitoring exercise training. J Strength Cond Res. 2001;15(1):109-115.Google ScholarPubMed
25. Borg, G. Borg’s Perceived Exertion and Pain Scales. Champaign, Illinois USA: Human Kinetics; 1998.Google Scholar