男性急性心肌梗塞發作日日均溫與身體質量指數相關性之探討

心血管疾病患者為溫度變化之主要衝擊對象，衝擊程度因性別、肥胖度以及地域而異。本研究，探討東台灣男性急性心股梗塞（acute myocardial infarction）發作日日均溫（日均溫）與身體質量指數之相關性。以病歷調閱法，查閱東台灣男性首次急性心肌梗塞之發作年、月、日、年齡、地址以及危險因子。探討的危險因子包括抽菸有無、糖尿病有無、高血壓有無、總膽固醉值以及身體質量指數值，並計算危險因子數。

Cardiovascular patients are the main group which is highly impacted by temperature changes. The degree of impact depends on the status of age, obesity, and habitat. This study analyzed the average temperature of the onset date and body mass index in male patients with acute myocardial infarction (AMI). With chart reviewing, the onset date, age, address, and risk factors of patients with first-time AMI in Eastern Taiwan were recorded. The risk factors analyzed included smoking, diabetes, hypertension, total cholesterol value, and body mass index(BMI, kg/㎡). The number of risk factors was calculated as well. Based on the BMI, subjects were divided into underweight group (BMI<18.5) and non-underweight group (BMI≧18.5). Furthermore, non-underweight group was divided into normal (18.5≦BMI＜23.9), overweight (24.0≦BMI＜26.9)，and obesity group (BMI≧27.0). Central Weather Bureau provided the average temperature from the local weather station on the onset date of AMI. Using whether underweight group or not as a dependent variable, logistic regression model was performed to provide odds ratios (OR) and 95% confidence interval (CI) of age, average temperature on the onset date, and number of risk factors. A total of 1218 subjects were included in the study, aged from 17 to 97 years (64.2±13.7 years). Sample size for each subgroup was: underweight group: 48, normal group: 435, overweight group: 389, and obesity group: 346. The age (OR 1.060; 95%CI=1.032-1.088), the average temperature on the onset date (OR 0.920; 95%CI=0.866-0.977), and the number of risk factors (OR 0.670; 95%CI=0.482-0.933) were significant risk factors for underweight group. The average temperature on the onset date was lower in underweight group in male patients with first-time AMI in Eastern Taiwan. The number of risk factors was less and the average age was higher in the underweight group.