铅接触工人心律反应变化初探

Study on the Changes of Heart Rate in Lead Exposed Workers

对蓄电池厂和工业陶瓷厂铅接触工人进行自主神经系统功能心电图测试和问卷调查，对照组为公司非铅接触人员组成。测试项目包括：ＶａｌｓａｌｖａＭａｎｏｅｕｖｒｅ心律反应，深呼吸时心律变化，即心律反应。测试值结果显示年龄增长与测试值间呈高度负相关（Ｐ＜０．０００１），表明年龄是影响自主神经功能的重要因素，年龄相近的接触组与对照组间测试差异均无显著性（Ｐ＞０．０５），接触组测试值与接触指标间未见显著相关关系（Ｐ＞０．０５），未观察到铅接触与自主神经功能下降有直接关系的证据。

CG examination and questionnaires survey were performed among lead exposed workers in order to assess whether moderate occupational lead exposure may cause autonomic nervous system(ANS) dysfunction.The tests included:1.heart rate response to Valsalva manoeuvre(HR V);2.heart rate variation during deep breathing(HR DB);3.immediate heart rate response to immediate stand up (30∶15 or Max∶Min).The results did not show any evidence that lead exposure is related to ANS dysfunction.There was no significant difference between the exposed workers and controls who were with the same ages ( P >005).The important cause for ANS dysfunction was aging.