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KMID : 0381319930320030106
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Korean Journal of Occupational Health
1993 Volume.32 No. 3 p.106 ~ p.115
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Effects of Wood Dust on Lung Function
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Abstract
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Forced expiratory spirograms were performed on 211 wood furniture workers(male 132, female 79) and 145 healthy subjects(male 84, female 61), in order to study the effect of wood dust on ventilatory function. From these spirograms, forced vital capacity(FVC), forced expiratory volume in one second(FEV_(10)), forced expiratory volume in one second as a percent of FVC (FEV_(10)%) and maximal mid-expiratory flow(MMF) were obtained.
The results were as follows:
1. Mean values of FVC, FEV_(10), FEV_(10)% and MMF were significantly higher in exposed group than in control group and tended to decrease with increasing age. However, these values were within normal range.
2. In regard to the type of ventilatory impairment in workers with exposed group, 6.6 percent belonged to the obstructive type, 1.9 percent to the restrictive type and 1.4 percent to the combined type of ventilatory impairment.
3. In exposed group the percentage of workers with substandard FVC, FEV_(10) and FEV_(10)% were 3.3 percent, 8.1 percent and 8.1 percent, respectively while that with substandard MMF was 22.7 percent.
4. FVC, FEV_(10) and FEV_(10)% did not related to the exposure duration. However, MMF was significantly lower workers of 20 years and over of exposure duration, accounting for 71.3 percent of predicted normal value.
With the above consideration in mind it suggested that wood dust relate to the ventilatory function of the lungs and MMF be more sensitive index in the evaluation of ventilatory impairments caused by wood dust.
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