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Symptoms, lung function, and diurnal variation in peak expiratory flow rate among female solderers in the electronics industry
Author(s) -
Lee H. S.,
Koh D.,
Chia H. P.,
Phoon W. H.
Publication year - 1994
Publication title -
american journal of industrial medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.7
H-Index - 104
eISSN - 1097-0274
pISSN - 0271-3586
DOI - 10.1002/ajim.4700260504
Subject(s) - medicine , vital capacity , asthma , peak flow meter , lung function , pulmonary function testing , physical therapy , cardiology , lung , diffusing capacity
The purpose was to determine if solderers had increased diurnal variation (DV) in peak expiratory flow rate (PEFR) and chronic impairment of lung function. A cross‐sectional study of 150 female operators doing manual soldering using flux‐cored (rosin‐based) solder wire and 52 administrative staff from two electronics factories was carried out. They answered a questionnaire, had their forced expiratory volume in 1 sec (FEV 1 ) and forced vital capacity (FVC) measured and their 3‐hourly PEFR monitored for 5 working days. The DV in PEFR was the difference in the daily maximum and minimum PEFR expressed as a percentage of the maximum. Six solderers with smoking history were excluded from the analysis. Solderers had a significantly higher prevalence of work‐related eye (14.6%) and nose (10.4%) irritation. The prevalence of cough, breathless‐ness, and wheezing was low. There was no overt case of occupational asthma. The DV in PEFR of 6.0% was not increased. The analysis of FEV 1 and FVC was restricted to Chinese only (101 solderers and 51 controls): these were not significantly different. Solderers with 5 or more years of exposure had a significantly lower FEV 1 /FVC (%) of 88.4% after adjustment for age. In conclusion, solderers with 5 or more years of exposure may have a mild obstructive effect apart from smoking, asthma, or age.