Source of Support: None, Conflict of Interest: None
One hundred and eighty-eight solderers with equal number of controls were studied. Prevalence of respiratory symptoms of breathlessness, cough and tightness in chest was seen in 51.06% of solderers. Roentgenologically there was no abnormality. VC, FEV1, FEV1/FVC and MMFR25-75 were lower in solderers as compared to controls and mean values decreased as the hours of exposure to fumes increased. 6.38% of solderers experienced restrictive type of ventilatory disorder while 4.25% had obstructive type. The high prevalence of respiratory morbidity and resulting pulmonary function impairment necessitate better environmental control of solder flux fumes.