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为弄清镉所致肾功能障碍的转归问题,作者分析了石川县镉污染区已确诊为肾小管功能障碍者21例随访9～14年的体检资料,着重比较他们血清肌酐和动脉血pH在该期间的变化。这21例患者(男6人、女15人)系长期食入镉污染大米后,于70年代初诊断为肾小管功能异常。初查年龄为51～78岁。1977年起,该地区将镉污染稻田的土壤移去,换之以未污染土。1980年测定稻米中镉含量已降至非污染区水平。作者将该组病例开始食入与非污染区镉含量相似水平大米的日期(文中未指明具体年份)视为开始脱离镉接触时间。
In order to understand the prognosis of renal dysfunction caused by cadmium, the author analyzed the physical examination data of 21 cases who were followed up for 9 ~ 14 years in cadmium contaminated area of Ishikawa Prefecture, and compared their serum creatinine and arterial blood pH Changes in the period. The 21 patients (6 males and 15 females) were diagnosed with tubular dysfunction in the early 1970s after long-term ingestion of cadmium-contaminated rice. First check the age of 51 to 78 years old. Since 1977, the soil in the paddy-polluted paddy fields has been removed in the area for uncontaminated soil. The determination of cadmium in rice in 1980 has dropped to non-contaminated areas. The authors consider the date when the group started to eat rice with a similar level of cadmium in the non-contaminated area (the year is not specified in the text) as starting to leave the cadmium exposure time.