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  • Title: [Spirometry in workers in a wheat-processing industry].
    Author: Corzo G, Naveda R.
    Journal: Invest Clin; 1998 Sep; 39(3):175-87. PubMed ID: 9780552.
    Abstract:
    In order to determine both clinical and spirometric changes due to high environmental concentrations of wheat dust at a wheat processing plant mill, 48 exposed men and 48 age and antroprometrically-matched, non-exposed apparently healthy men were studied. In both groups a medical and occupational history were taken, and spirometric measurements were carried out, that included Forced Vital Capacity (FVC), Forced Expiratory Volume at the first second (FEV1), Peak Flow Rate (PFR), Forced Percentual Expiratory Volume (FEV%), Forced Percentual Vital Capacity (FVC%), Forced Expiratory Flow at 25% (FEV25%), at 50% (FEV50%) and at 75% (FEV75%) of their Forced Vital Capacity, which were analyzed through Corzo's predictive equations and the lung deterioration's criteria by USA's Thoracic Association. The environmental wheat dust was determined by gravimetry and its concentration was higher than the legally admitted (3/5, 60%). There was a decrease in the PFR, FEV%, FEV25% and FEV75%. (p < 0.05). In addition, 4 restrictive and 1 obstructive syndrome were detected in the exposed workers and none in the control group. The spirometric values diminished in a positive correlation with the time of exposure and smoking habits. There was no correlation between the clinical findings and the dust concentration but it did exist with the spirometric values. It is concluded that in this plant, the wheat dust exposed workers have a diminished spirometric values.
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