مرکز منطقه ای اطلاع رساني علوم و فناوري - رابطه درجه حرارت هوا با سكته قلبي در شهرستان اهر

چكيده لاتين :

Heart attack is the most current cause of death in the world, imposing huge costs to the governments. One of the diseases that threatens ailing people particularly those who are captured by heart and coroner infirmity is the cold weather of the winter. Generally heart attacks are more usual in winter than in summer. Heart attack (Myocardial Infrectose, "MI") means the un-retrievable death of part of heart muscles and its magnitude differs on the basis of its signals and appearances. The main reason of MI is the lack of balance between the demand and supply of oxygen in heart muscles whose cause also is the blocking of heart veins by blood clots. Body veins become compressed during the winter for keeping the temperature, hence increasing the activity of heart and thereby its tiredness. These conditions get intensified during the initial hours of the morning when the patient has to go out of house for his/her usual works. The occurrence of temperature inversion in cold seasons causes the previous dayʹs polluted air move down toward the lower layers of biosphere alongside the temperature reduction and occupies the living layers of the earth. The patient, who is exposed to such a contaminated and cold weather especially through cold mornings, would be probably more susceptible for heart diseases, MI and even death. As we approach toward the mid day and the weather becomes warmer, the polluted layers moves up and becomes far away from life layer. Therefore the air condition is better on midday. The present article has been compiled through a survey of 828 patients and has paid attention to the Pearson correlation analysis of linear histograms of temperature and death tolls caused by MI in Ahar Township. Results indicate that there is a significant correlation between low temperatures and heart attacks in this city. The p-values verify the significance of correlations. The correlation type is negative and its amount is average.