Climatological variations in daily hospital admissions for acute coronary syndromes

Citation:

Panagiotakos, D.B., et al. Climatological variations in daily hospital admissions for acute coronary syndromes. International Journal of Cardiology 94, 229-233 (2004). Copy at http://www.tinyurl.com/gt32tg8
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Abstract:

Objective: We examined the association between climatologic parameters and daily admissions for non-fatal acute coronary syndromes (ACS) to emergency units of hospitals in the greater Athens area, from January 2001 to August 2002. Methods: Daily mean, maximum and minimum temperatures, relative humidity, wind speed, barometric pressure and a thermo-hydrological index (T.H.I.) were measured at the meteorological station of the Laboratory of Climatology of the Geology Department of the University of Athens. In addition, the daily number of admissions for acute myocardial infarction or unstable angina in the five major general hospitals in the greater Athens area was recorded. Generalized additive models (GAM) were applied to regress-time-series of daily numbers of outpatients with acute cardiac events against climatological variations, after controlling for possible confounders and adjustment for over dispersion and serial correlation. Results: Five thousand four hundred fifty-eight Athenians with non-fatal acute cardiac events were admitted to the selected hospitals during the period of the study, 4093 (75%) males and 1365 (25%) females. There was a negative correlation between hospital admissions and mean daily temperature (MDT) with a 1Β°C decrease in mean air temperature yielding a 5% increase in hospital admissions (P<0.05). This association was stronger in females and the elderly (P<0.01). Relative humidity was positively correlated with hospital admissions (P<0.05). Conclusion: Despite the relatively short study period (<2 years), these findings suggest a significant association between cold weather and increased coronary heart disease incidence, especially in the elderly and females. Β© 2003 Elsevier Ireland Ltd. All rights reserved.

Notes:

Int. J. Cardiol.Cited By (since 1996):55Export Date: 13 October 2014CODEN: IJCDDCorrespondence Address: Panagiotakos, D.B.; Demosthenes Panagiotakos, 46 Paleon Polemiston st, 166 74 Glyfada, Greece; email: d.b.panagiotakos@usa.netReferences: Lye, M., Kamal, A., Effects of a heat-wave on mortality-rates in elderly inpatients (1977) Lancet, 5 (1-8010), pp. 529-531; Fish, P.D., Bennett, G.C., Millard, P.H., Heat wave morbidity and mortality in old age (1985) Age Ageing, 14 (4), pp. 243-245; Tanaka, M., Ohnaka, T., Yamazaki, S., Tochihara, Y., The effects of different vertical air temperatures on mental performance (1987) Am. Ind. Hyg. Assoc. J., 48 (5), pp. 494-498; Katsouyanni, K., Trichopoulos, D., Zavitsanos, X., Touloumi, G., The 1987 Athens heat wave (1988) Lancet, 3, p. 573; Glantz, S.A., Heart disease and the environment (1993) J. Am. Coll. Cardiol., 21, pp. 1473-1474; Kay, R.W., Geomagnetic storms: Association with incidence of depression as measured by hospital admission (1994) Br. J. Psychiatry, 164, pp. 403-409; Colwell, R.R., Epstein, P.R., Gubler, D., Maynard, N., McMichael, A.J., Patz, J.A., Climate change and human health (1998) Science, 13 (279-5353), pp. 968-969; Rooney, C., McMichael, A.J., Kovats, R.S., Coleman, M.P., Excess mortality in England and Wales, and in Greater London, during the 1995 heat wave (1998) J. Epidemiol. Community Health, 52 (8), pp. 482-486; McMichael, A.J., The urban environment and health in a world of increasing globalization: Issues for developing countries (2000) Bull. Who, 78 (9), pp. 1117-1126; Hajat, S., Kovats, R.S., Atkinson, R.W., Haines, A., Impact of hot temperatures on death in London: A time series approach (2002) J. Epidemiol. Community Health, 56 (5), pp. 367-372; Touloumi, G., Samoli, E., Katsouyanni, K., Daily mortality and winter type air pollution in Athens, Greece - A time series analysis within the APHEA project (1996) J. Epidemiol. Community Health, 50, pp. 47-s51; Hastie, T., Tibshirani, R., (1990) Generalized Additive Models, , London: Chapman and Hall; Braga, A.L., Zanobetti, A., Schwartz, J., The effect of weather on respiratory and cardiovascular deaths in 12 US cities (2002) Environ. Health Perspect., 110 (9), pp. 859-863; Brockwell, P.J., Davis, R.A., Time series theory and methods (1991) 2nd Ed., , New York: Springer; Thom, E., The discomfort index (1959) Weatherwise, 12, pp. 57-60; Tanaka, H., Shinjo, M., Tsukuma, H., Kawazuma, Y., Shimoji, S., Kinoshita, N., Seasonal variation in mortality from ischemic heart disease and cerebrovascular disease in Okinawa and Osaka: The possible role of air temperature (2000) J. Epidemiol., 10 (6), pp. 392-398; Huynen, M., Martens, P., Schram, D., Weijenberg, M., Kunst, A.E., The impact of cold spells and heat-waves on mortality rates in the Dutch population (2001) Environ. Health Perspect., 109, pp. 463-470; Keatinge, W.R., Donaldson, G.C., Mortality related to cold and air pollution in London after allowance for effects of associated weather patterns (2001) Environ. Res., 86, pp. 209-216; Kunst, A.E., Looman, C.W.N., MacKenbach, J.P., Outdoor air temperature and mortality in the Netherlands: A time-series analysis (1993) Am. J. Epidemiol., 137, pp. 331-341; Donaldson, G.C., Keatinge, W.R., Early increases in ischaemic heart disease mortality dissociated from and later changes associated with respiratory mortality after cold weather in southeast England (1997) J. Epidemiol. Community Health, 51, pp. 643-648; Opie, L., (1998) The Heart, , Philadelphia: Lippincott-Raven Publishers; Sheth, T., Nair, C., Muller, J., Yusuf, S., Increased winter mortality from acute myocardial infarction and stroke: The effect of age (1999) J. Am. Coll. Cardiol., 33, pp. 1916-1919; Alderson, M.R., Season and mortality (1985) Health Trends, 17, pp. 87-95; Thakur, C.P., Anand, M.P., Shahi, M.P., Cold weather and myocardial infarction (1987) Int. J. Cardiol., 16, pp. 19-25; Barer, D., Ebrahim, S., Smith, C., Factors affecting day to day incidence of stroke in Nottingham (1984) Br. Med. J., 289 (6446), p. 662; Messner, T., Lundberg, V., Wikstrom, B., A temperature rise is associated with an increase in the number of acute myocardial infarctions in the subarctic area (2002) Int. J. Circumpolar Health, 61 (3), pp. 201-207; Jehn, M., Appel, L.J., Sacks, F.M., Miller Jr., E.R., The effect of ambient temperature and barometric pressure on ambulatory blood pressure variability (2002) Am. J. Hypertens., 15 (11), pp. 941-945; Landsberg, H.E., (1972) The Assessment of Human Bioclimate: A Limited Review of Physical Parameters, , Geneva, WHO Technical Note No 123