cement dust exposure is associated with increased respiratory impairment. as the major occupational hazard in the cement production industry is cement particles, our aim was to more thoroughly examine the acute effects of occupational exposure to cement dust on the respiratory system. a cross-shift study was conducted in a cement factory in iran. 100 high exposed workers from production and pac...

Introduction: Recently a relation between female sex hormones and severity of asthma symptoms has been proposed. As a common endocrine dysfunction, polycystic ovary syndrome (PCOS) could significantly influence the level of sex hormones in PCOS patients. Regarding the possible role of sex hormones in airway physiology, the present study was conducted to survey the effects of PCOS on pulmonary f...

Introduction:  In patients who underwent surgery to repair Tetralogy of Fallot, right ventricular dilation from pulmonary regurgitation may be result in right ventricular failure, arrhythmias and cardiac arrest. Hence, pulmonary valve replacement may be necessary to reduce right ventricular volume overload. The aim of present study was to assess the effects of pulmonary valve replacement on rig...

introduction: recently a relation between female sex hormones and severity of asthma symptoms has been proposed. as a common endocrine dysfunction, polycystic ovary syndrome (pcos) could significantly influence the level of sex hormones in pcos patients. regarding the possible role of sex hormones in airway physiology, the present study was conducted to survey the effects of pcos on pulmonary f...

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 prevalence of exercise induced asthma (eia) in iran is not known. in the present study the  prevalence of  eia  among female students  of  guidance school  in the  city of mashhad was evaluated. a total of 1690 female students aged 12-14 years in ten randomly selected schools in north east of iran (mashhad) completed an asthma symptoms- specific questionnaire. one hundred forty four randoml...

background: according to the growth of photocopier usage in workplaces, the potential risk of occupational exposure to the airborne chemicals has been raised up. hence, monitoring the photocopy worker's respiratory functions seems to be necessary. we aimed to evaluate the respiratory health on photocopy and printing workers so that a reliable description can be made about their occupational hyg...

background: galvanization is the process of coating steel or cast iron pieces with a thin layer of zinc allowing protection against corrosion. one of the important hazards in this industry is exposure to zinc compounds specially zinc oxide fumes and dusts. in this study we evaluated chronic effects of zinc oxide on the respiratory tract of galvanizers. method : 188 workers were selected from a ...