谷尘职业危害的随访研究

Follow up of Occupational Adverse Effect of Grain Dust

对谷尘职业危害进行的4年随访显示,接触谷尘工人的急性刺激反应和肺功能急性改变随车间空气中谷尘浓度下降而有所缓解。接尘工人肺功能的急、慢性改变均符合肺通气功能的阻塞性特征,主要表现为小气道流速下降。由于小气道流速测定可发现小气道早期病变和显示阻塞性通气功能障碍的损害程度,故本文认为小气道流速测定可考虑作为接触谷尘工人健康监护的早期检测指标。

Four years follow up of grain workers revealed that acute irritating response and acute lung function change relieved following a reduction of air dust concentration, Acute and chronic lung function changes showed characteristics of obstructive ventilatory defect, with most significant change of V5o and V25 reduced. A test of smaller airway flow rate indicated both early smaller airway disease and degree of obstructive ventilatory defect. Moreover, this test was very sensitive, objective and convenient, so V50 and V25 may be considered as early indices of health surveillance of grain workers.