Baszczyński J, Karpiński E, Sobuś W, Sordyl E, Szydłowski A, Zytkiewicz B, Bak L, Jackowski W, Wosik-Erenbek M, Klepacz H
Med Pr. 1985;36(3):202-8.
A group of 201 boys of vocational schools living in an area of developing industry (Bełchatów) and another area of developed industry (Lódź) were examined twice: at the age of 16-17 (I examination) and 14-18 months later (II examination). Incomplete right bundle-branch block and intraventricular conduction impairment have been demonstrated mainly in the resting ECG tracings (Table I). The risk factors of coronary heart disease were increasing with age, especially in boys of Bełchatów area (Table II). Five boys with risk factors of coronary heart disease exhibited ischaemic type of postexertional ST segment changes (Table III).
对居住在工业发展地区（贝乌哈托夫）和工业发达地区（罗兹）的201名职业学校男生进行了两次检查：一次是在16 - 17岁时（第一次检查），另一次是在14 - 18个月后（第二次检查）。主要在静息心电图记录中发现了不完全性右束支传导阻滞和室内传导障碍（表一）。冠心病的危险因素随年龄增加，在贝乌哈托夫地区的男孩中尤其如此（表二）。五名有冠心病危险因素的男孩出现了运动后ST段缺血型改变（表三）。
