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Association between use of air-conditioning or fan and survival of elderly febrile patients: a prospective study

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Abstract

Elderly individuals are more susceptible to excess summer heat. We sought to examine whether the use of cooling systems (air-conditioning or fan) affected the clinical outcomes of elderly febrile patients. We prospectively followed elderly (≥75 years old) febrile patients requesting the medical services of the SOS Doctors (a network of physicians performing house-call visits) from July 10 to August 20, 2011. Patients who used cooling systems (“users”) were compared with those who did not (“non-users”) regarding mortality, clinical outcome of primary illness (improvement or deterioration), and emergency hospitalization. Prospectively collected data were available for 339 individual elderly febrile patients. “Users” had lower mortality (10 % vs. 19 %, p < 0.05) than “non-users”; no difference was noted on clinical improvement (85 % vs. 76 %, p = 0.11) and emergency hospitalization rates (21 % vs. 30 %, p = 0.16). No difference was noted between users of air-conditioning and fan regarding mortality or clinical improvement, but fan use was associated with more hospitalizations (37 % vs. 19 %, p < 0.05). On multivariate analysis (assessing daily ambient temperature, use of cooling systems, patient age, and living conditions), the sole variable significantly associated with mortality was the non-use of cooling systems [odds ratio (OR): 2.18, 95 % confidence interval (CI): 1.06–4.50]. The use of air-conditioning or fan during hot summer periods appeared to be beneficial for elderly febrile patients living in a large city. Large prospective studies are warranted in order to provide further insight into potential individual and public health initiatives aiming to alleviate the impact of excess summer heat on the health of elderly patients.

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References

  1. Kinsella K, He W (2009) An aging world: 2008. International Population Reports. P95/09-1

  2. Conti S, Meli P, Minelli G et al (2005) Epidemiologic study of mortality during the Summer 2003 heat wave in Italy. Environ Res 98:390–399

    Article  PubMed  CAS  Google Scholar 

  3. Fouillet A, Rey G, Laurent F et al (2006) Excess mortality related to the August 2003 heat wave in France. Int Arch Occup Environ Health 80:16–24

    Article  PubMed  CAS  Google Scholar 

  4. Nogueira PJ, Falcão JM, Contreiras MT, Paixão E, Brandão J, Batista I (2005) Mortality in Portugal associated with the heat wave of August 2003: early estimation of effect, using a rapid method. Euro Surveill 10:150–153

    PubMed  CAS  Google Scholar 

  5. Analitis A, Katsouyanni K, Biggeri A et al (2008) Effects of cold weather on mortality: results from 15 European cities within the PHEWE project. Am J Epidemiol 168:1397–1408

    Article  PubMed  CAS  Google Scholar 

  6. Michelozzi P, De Sario M, Accetta G et al (2006) Temperature and summer mortality: geographical and temporal variations in four Italian cities. J Epidemiol Community Health 60:417–423

    Article  PubMed  Google Scholar 

  7. Baccini M, Biggeri A, Accetta G et al (2008) Heat effects on mortality in 15 European cities. Epidemiology 19:711–719

    Article  PubMed  Google Scholar 

  8. D’Ippoliti D, Michelozzi P, Marino C et al (2010) The impact of heat waves on mortality in 9 European cities: results from the EuroHEAT project. Environ Health 9:37

    Article  PubMed  Google Scholar 

  9. Ballester F, Corella D, Pérez-Hoyos S, Sáez M, Hervás A (1997) Mortality as a function of temperature. A study in Valencia, Spain, 1991–1993. Int J Epidemiol 26:551–561

    Article  PubMed  CAS  Google Scholar 

  10. Theocharis G, Mavros MN, Vouloumanou EK et al (2012) Comparison of morbidity of elderly patients in August and November in Attica, Greece: a prospective study. Int J Clin Pract 66:84–90

    Article  PubMed  CAS  Google Scholar 

  11. Gradel KO, Schønheyder HC, Dethlefsen C, Kristensen B, Ejlertsen T, Nielsen H (2008) Morbidity and mortality of elderly patients with zoonotic Salmonella and Campylobacter: a population-based study. J Infect 57:214–222

    Article  PubMed  Google Scholar 

  12. Nørgaard M, Larsson H, Pedersen G, Schønheyder HC, Rothman KJ, Sørensen HT (2006) Short-term mortality of bacteraemia in elderly patients with haematological malignancies. Br J Haematol 132:25–31

    Article  PubMed  Google Scholar 

  13. Wang CS, Chen HC, Yang CJ et al (2008) The impact of age on the demographic, clinical, radiographic characteristics and treatment outcomes of pulmonary tuberculosis patients in Taiwan. Infection 36:335–340

    Article  PubMed  Google Scholar 

  14. Freemeteo. Home page at: http://www.freemeteo.com

  15. Lin YK, Ho TJ, Wang YC (2011) Mortality risk associated with temperature and prolonged temperature extremes in elderly populations in Taiwan. Environ Res 111:1156–1163

    Article  PubMed  CAS  Google Scholar 

  16. Wilkinson P, Pattenden S, Armstrong B et al (2004) Vulnerability to winter mortality in elderly people in Britain: population based study. BMJ 329:647

    Article  PubMed  Google Scholar 

  17. Semenza JC, Rubin CH, Falter KH et al (1996) Heat-related deaths during the July 1995 heat wave in Chicago. N Engl J Med 335:84–90

    Article  PubMed  CAS  Google Scholar 

  18. Baccini M, Kosatsky T, Analitis A et al (2011) Impact of heat on mortality in 15 European cities: attributable deaths under different weather scenarios. J Epidemiol Community Health 65:64–70

    Article  PubMed  CAS  Google Scholar 

  19. Bouchama A, Dehbi M, Mohamed G, Matthies F, Shoukri M, Menne B (2007) Prognostic factors in heat wave related deaths: a meta-analysis. Arch Intern Med 167:2170–2176

    Article  PubMed  Google Scholar 

  20. [No authors listed] (1997) Cold exposure and winter mortality from ischaemic heart disease, cerebrovascular disease, respiratory disease, and all causes in warm and cold regions of Europe. The EuroWinter Group. Lancet 349:1341–1346

    Article  Google Scholar 

  21. Aylin P, Morris S, Wakefield J, Grossinho A, Jarup L, Elliott P (2001) Temperature, housing, deprivation and their relationship to excess winter mortality in Great Britain, 1986–1996. Int J Epidemiol 30:1100–1108

    Article  PubMed  CAS  Google Scholar 

  22. Wikipedia. Home page at: http://www.wikipedia.com

  23. Wolfe RM (2003) Death in heat waves: beware of fans. BMJ 327:1228

    Article  PubMed  Google Scholar 

  24. Fujino Y, Matsuda S (2009) Prospective study of living arrangement by the ability to receive informal care and survival among Japanese elderly. Prev Med 48:79–85

    Article  PubMed  Google Scholar 

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Authors and Affiliations

  1. SOS Doctors, Athens, Greece

    G. Theocharis, T. Spiropoulos & S. G. Barbas

  2. Alfa Institute of Biomedical Sciences (AIBS), 9 Neapoleos Street, 151 23, Marousi, Athens, Greece

    G. S. Tansarli, M. N. Mavros & M. E. Falagas

  3. Department of Internal Medicine—Infectious Diseases, Mitera Hospital, Hygeia Group, Athens, Greece

    M. E. Falagas

  4. Department of Medicine, Tufts University School of Medicine, Boston, MA, USA

    M. E. Falagas

Authors
  1. G. Theocharis
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  2. G. S. Tansarli
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  3. M. N. Mavros
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  4. T. Spiropoulos
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  5. S. G. Barbas
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  6. M. E. Falagas
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Correspondence to M. E. Falagas.

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Theocharis, G., Tansarli, G.S., Mavros, M.N. et al. Association between use of air-conditioning or fan and survival of elderly febrile patients: a prospective study. Eur J Clin Microbiol Infect Dis 32, 1143–1147 (2013). https://doi.org/10.1007/s10096-013-1860-6

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  • DOI: https://doi.org/10.1007/s10096-013-1860-6

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