Effects of meteorological factors on hospital admissions and outcomes of patients with acute coronary syndromes
Abstract
Abstract
Aim. Global warming is affecting the entire Earth, and the temperatures will continue to rise. We aimed to provide data about admissions to a coronary care unit and its relation to temperature and climatic data that will probably change in nature in the following decades. Methods. The study group comprised 289 consecutive patients with acute coronary syndrome admitted to the coronary care unit of Uludağ University Hospital in Bursa between 1 July 2006 and 31 June 2007. We retrospectively analyzed the data of patients and gathered the climate data from the Department of Meteorology of the Republic of Turkey Ministry of Environment and Forestry, for the city of Bursa (40°11′N, 29°04′E). Results. The mean age of the 289 cases was 60.5 ± 12.3. Among the study group, 224 cases were male (77.5%). Hyperlipidemia was present in 80 patients (27.7%). Among the patients 120 (41.5%) cases had hypertension, and 64 (22.1%) cases had type 2 diabetes mellitus. The number of admissions tended to decrease with increasing mean daily temperature. Seasonal variations including temperature, humidity and pressure did not significantly affect the outcome of inpatients. Conclusions. In this study, we did not find any association between the outcome and seasonal distribution in the admission of acute coronary patients. The number of admissions increases in the cold season. Only presence of anemia and obesity appeared to affect the outcome of patients.
Keywords: Acute coronary syndrome, seasons, meteorological factors
Özet
Amaç. Küresel ısınma tüm yerküreyi etkilemektedir ve sıcaklıklar artmaya devam edecektir. Bu çalışmada koroner yoğun bakım ünitesine yatışlar ve muhtemelen önümüzdeki yıllar içinde doğasında değişiklik olacak olan sıcaklık ve iklimsel veriler ile ilişkisi incelendi. Yöntem. Çalışma grubu Uludağ Üniversitesi Hastanesi Koroner Bakım Ünitesine akut koroner sendrom ile 1 Temmuz 2006 ile 31 Haziran 2007 tarihleri arasında başvuran 289 hastadan oluşturuldu. Geriye dönük olarak hastaların verileri analiz edildi ve Çevre ve Orman Bakanlığı Meteoroloji dairesinden Bursa için (40°11dk Kuzey, 29°04dk Doğu) meteorolojik verileri alındı. Bulgular. Çalışma grubundaki 289 hastanın yaş ortalaması 60,5 ± 12,3 idi ve 224'ü (%77,5) erkekti. Seksen (27,7%) hastada hiperlipidemi mevcuttu . Yüz yirmi (41,5%) hastada hipertansiyon, 64 (22,1%) hastada tip 2 diabetes mellitus vardı. Artan sıcaklıklar ile hastaneye başvuru sayısında azalmaya eğilim vardı. Mevsimsel ve sıcaklık, nem ve basınç gibi iklimsel değişiklikler hastane içi sonuçları etkilemedi. Sonuçlar. Bu çalışmada hastaneye başvuran akut koroner sendrom hastalarında hastane içi sonuçlar ve ve mevsimsel dağılım arasında ilişki bulunamadı. Soğuk mevsimde hastaneye yatışlar daha fazlaydı. Yalnızca anemi ve obezite varlığı hasta sonuçlarını etkilemiştir.
Anahtar sözcükler: Akut koroner sendrom, mevsimler, iklimsel etkenler
Keywords
References
- Masters AM, Dack S, Jaffe HL. Factors and events associated with onset of coronary artery thrombosis. JAMA 1937; 109: 546-9.
- Spencer FA, Goldberg RJ, Becker RC, Gore JM. Seasonal distribution of acute myocardial infarction in the second National Registry of Myocardial Infarction. J Am Coll Cardiol 1998; 31: 1226-33.
- Willich SN, Levy D, Rocco MB, Tofler GH, Stone PH, Muller JE. Circadian variation in the incidence of sudden cardiac death in the Framingham Heart Study population. Am J Cardiol 1987; 60: 801-6.
- Hernández EG, O’Callaghan AC, Doménech JC, et al. on behalf of the PRIMVAC study research team. Seasonal Variations in Admissions for Acute Myocardial Infarction. Rev Esp Cardiol 2004; 57: 12-9.
- IPCC. Climate change 2001: the scientific basis. Contribution of working group I to the third assessment report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University Press, 2001.
- Nutritional anaemias. Report of a WHO scientiŞc group. World Health Organ Tech Rep Ser 1968; 405: 5–37.
- NHBLI Expert Panel on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults: Clinical guidelines on identification, evaluation, and treatment of overweight and obesity in adults: the evidence report. Obes Res 1998; 6: 51S–209S.
- Panagiotakos DB, Chrysohoou C, Pitsavos C, et al. Climatological variations in daily hospital admissions for acute coronary syndromes International Journal of Cardiology 2004; 94: 229– 33
- Weerasinghe DP, MacIntyre CR, Rubin GL. Seasonality of coronary artery deaths in New South Wales, Australia. Heart 2002; 88: 30–4.
- Auliciems A, Frost D. Temperature and cardiovascular deaths in Montreal. Int J Biometeorol 1989; 33: 151-6.
- Auliciems A, Frost D, Siskind V. The time factor in mortality: weather associations in a subtropical environment. Int J Biometeorol 1997; 40: 183-91.
- Frost DB, Auliciems A, de Freitas C. Myocardial infarct death and temperature in Auckland, New Zealand. Int J Biometeorol 1992; 36: 14-7.
- Woodhouse PR, Khaw KT, Plummer M, Foley A, Meade TW. Seasonal variations of plasma fibrinogen and factor VII activity in the elderly: Winter infections and death from cardiovascular disease. Lancet 1994; 343: 435-9.
- Servoss SJ, Januzzi JL, Muller JE. Triggers of Acute Coronary Syndromes. Progress in Cardiovascular Diseases 2002; 44: 369-80.
- Heyer HE, Teng HC, Barris W. The increased frequency of acute myocardial infarction during summer months in a warm climate. Am Heart J 1953; 45: 741–6.
- Muller JE, Stone PH, Turi ZG, et al. for the MILIS Study Group. Circadian variation in the frequency of onset of acute myocardial infarction. N Engl J Med 1985; 313: 1315–22.
- Muller JE, Abela GS, Nesto RW, Tofler GH. Triggers, acute risk factors and vulnerable plaques: the lexicon of a new frontier. J Am Coll Cardiol 1994; 23: 809–13.
- Argiles A, Mourad G, Mion C. Seasonal changes in blood pressure in patients with end- stage renal disease treated with hemodialysis. N Engl J Med 1998; 339: 1364–70.
Abstract
Amaç. Küresel ısınma tüm yerküreyi etkilemektedir ve sıcaklıklar artmaya devam edecektir. Bu çalışmada koroner yoğun bakım ünitesine yatışlar ve muhtemelen önümüzdeki yıllar içinde doğasında değişiklik olacak olan sıcaklık ve iklimsel veriler ile ilişkisi incelendi. Yöntem. Çalışma grubu Uludağ Üniversitesi Hastanesi Koroner Bakım Ünitesine akut koroner sendrom ile 1 Temmuz 2006 ile 31 Haziran 2007 tarihleri arasında başvuran 289 hastadan oluşturuldu. Geriye dönük olarak hastaların verileri analiz edildi ve Çevre ve Orman Bakanlığı Meteoroloji dairesinden Bursa için (40°11dk Kuzey, 29°04dk Doğu) meteorolojik verileri alındı. Bulgular. Çalışma grubundaki 289 hastanın yaş ortalaması 60,5 ± 12,3 idi ve 224’ü (%77,5) erkekti. Seksen (27,7%) hastada hiperlipidemi mevcuttu . Yüz yirmi (41,5%) hastada hipertansiyon, 64 (22,1%) hastada tip 2 diabetes mellitus vardı. Artan sıcaklıklar ile hastaneye başvuru sayısında azalmaya eğilim vardı. Mevsimsel ve sıcaklık, nem ve basınç gibi iklimsel değişiklikler hastane içi sonuçları etkilemedi. Sonuçlar. Bu çalışmada hastaneye başvuran akut koroner sendrom hastalarında hastane içi sonuçlar ve ve mevsimsel dağılım arasında ilişki bulunamadı. Soğuk mevsimde hastaneye yatışlar daha fazlaydı. Yalnızca anemi ve obezite varlığı hasta sonuçlarını etkilemiştir
References
- Masters AM, Dack S, Jaffe HL. Factors and events associated with onset of coronary artery thrombosis. JAMA 1937; 109: 546-9.
- Spencer FA, Goldberg RJ, Becker RC, Gore JM. Seasonal distribution of acute myocardial infarction in the second National Registry of Myocardial Infarction. J Am Coll Cardiol 1998; 31: 1226-33.
- Willich SN, Levy D, Rocco MB, Tofler GH, Stone PH, Muller JE. Circadian variation in the incidence of sudden cardiac death in the Framingham Heart Study population. Am J Cardiol 1987; 60: 801-6.
- Hernández EG, O’Callaghan AC, Doménech JC, et al. on behalf of the PRIMVAC study research team. Seasonal Variations in Admissions for Acute Myocardial Infarction. Rev Esp Cardiol 2004; 57: 12-9.
- IPCC. Climate change 2001: the scientific basis. Contribution of working group I to the third assessment report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University Press, 2001.
- Nutritional anaemias. Report of a WHO scientiŞc group. World Health Organ Tech Rep Ser 1968; 405: 5–37.
- NHBLI Expert Panel on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults: Clinical guidelines on identification, evaluation, and treatment of overweight and obesity in adults: the evidence report. Obes Res 1998; 6: 51S–209S.
- Panagiotakos DB, Chrysohoou C, Pitsavos C, et al. Climatological variations in daily hospital admissions for acute coronary syndromes International Journal of Cardiology 2004; 94: 229– 33
- Weerasinghe DP, MacIntyre CR, Rubin GL. Seasonality of coronary artery deaths in New South Wales, Australia. Heart 2002; 88: 30–4.
- Auliciems A, Frost D. Temperature and cardiovascular deaths in Montreal. Int J Biometeorol 1989; 33: 151-6.
- Auliciems A, Frost D, Siskind V. The time factor in mortality: weather associations in a subtropical environment. Int J Biometeorol 1997; 40: 183-91.
- Frost DB, Auliciems A, de Freitas C. Myocardial infarct death and temperature in Auckland, New Zealand. Int J Biometeorol 1992; 36: 14-7.
- Woodhouse PR, Khaw KT, Plummer M, Foley A, Meade TW. Seasonal variations of plasma fibrinogen and factor VII activity in the elderly: Winter infections and death from cardiovascular disease. Lancet 1994; 343: 435-9.
- Servoss SJ, Januzzi JL, Muller JE. Triggers of Acute Coronary Syndromes. Progress in Cardiovascular Diseases 2002; 44: 369-80.
- Heyer HE, Teng HC, Barris W. The increased frequency of acute myocardial infarction during summer months in a warm climate. Am Heart J 1953; 45: 741–6.
- Muller JE, Stone PH, Turi ZG, et al. for the MILIS Study Group. Circadian variation in the frequency of onset of acute myocardial infarction. N Engl J Med 1985; 313: 1315–22.
- Muller JE, Abela GS, Nesto RW, Tofler GH. Triggers, acute risk factors and vulnerable plaques: the lexicon of a new frontier. J Am Coll Cardiol 1994; 23: 809–13.
- Argiles A, Mourad G, Mion C. Seasonal changes in blood pressure in patients with end- stage renal disease treated with hemodialysis. N Engl J Med 1998; 339: 1364–70.
Details
| Primary Language | English |
|---|---|
| Journal Section | Medical Science Research Articles |
| Authors | |
| Publication Date | March 6, 2009 |
| Published in Issue | Year 2009Volume: 31 Issue: 1 |