dust can be produced by almost all production processes in portland cement factory. dust exposure potentially can affect respiratory function. but evidence for respiratory effect of cement dust exposure has not been conclusive. in this study we assessed effect of cement dust exposure on respiratory function in a cement production factory. a respiratory symptoms questionnaire was completed and p...

formaldehyde is a common indoor pollutant with irritant properties. the present case control study was undertaken among 37 exposed staff with formaldehyde and 19 non exposed (referent) ones to study the acute and chronic effects of it in two educational hospitals. all subjects were tested for respiratory function by a portable alpha vitalograph-uk. in addition using a respiratory questionnaire,...

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welding is one of the key components of numerous manufacturing industries, which has potential physical and chemical health hazards. many components of welding fumes can potentially affect the lung function. this study investigates the effects of welding fumes on lung function and respiratory symptoms among welders of an automobile manufacturing plant in iran. this historical cohort study asses...

introduction:  asthma exacerbation is common in children. treatment with oral corticosteroids (ocs) and inhaled corticosteroids are suggested for asthma exacerbation. it is shown that inhaled corticosteroids has similar outcome in reducing asthma symptoms compared to ocs. but few studies have evaluated the pulmonary function changes in these two treatments. in this study, we evaluated the chang...

the link between allergic rhinitis and asthma is well known. bronchial hyperreactivity (bhr) may be present in rhinitis. the present study was aimed to compare airway responses in patients  with rhinitis symptoms alone following exercise challenge, and to  determine relationship of two different respiratory function tests. 98 subjects with rhinitis were investigated by spirometry and impulse os...

objective to determine the changes in thyroid function tests in children who underwent antiepileptic therapy in shahid beheshti hospital, kashan, in 2008. materials & methods this analytical-observational study was carried out in a cohort fashion without an external control group (self controlled) on 45 children with new onset epilepsy who had not been previously treated with antiepileptic medi...