Sulfur mustard is one of the major potent chemical warfare agents. It was widely used against not only military personnel but also civilian people ofIranduring the last years (1984–1988) of the Iraq–Iran war. A number of studies were performed regarding the acute and long-term consequences of sulfur mustard on respiratory system. Currently, many aspects of leading respiratory disorder that was ...

The design of the mathematical model of the respiratory system is described in the study. The model has been designed using an electro-acoustic analogy and geometrical dimensions of the morphological models of the respiratory system. The dependence of the geometrical dimension of the airways upon the total lung impedance is studied. Geometrical dimensions of adult respiratory system and neonate...

despite improvement of mechanical ventilation devices for infants, lung injury still causes morbidity and mortality in many cases. to determine the effect of high frequency oscillatory ventilation (hfov) in infants with severe respiratory failure, 10 neonates were evaluated prospectively. mean gestational age of these patients was 35 weeks and alveolar-arterial oxygen gradient (a-ado2) and the ...

background : the present study was undertaken to ascertain whether (or not) long term occupational exposure to low (sub-tlv levels) atmospheric concentrations of chlorine gas was associated with any significant decrements in the parameters of pulmonary function and/or  increased prevalence of respiratory symptoms. methods : in this retrospective cohort study that was performed in 2012, 54 worke...

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...

background: national institute of environmental health sciences (niehs) scientists shows that long-term exposure to air pollutants increases the risk of respiratory diseases such as allergies, asthma, chronic obstructive pulmonary disease, and lung cancer. children and the elderly are particularly vulnerable to the health effects of ozone, fine particles, and other airborne toxicants. air pollu...

background: sulfur mustard (sm) as a chemical warfare agent, increases permeability of bronchial vessels and damages airway epithelium. sm exposure causes debilitating respiratory complications. this study was designed to evaluate clinical respiratory manifestations, and to compare chest x ray (cxr) and high resolution computed tomography (hrct) scan of chest in sm exposed patients with respira...

asthma is one of the most common chronic illnesses in childhood with an increased rate of hospitalization. in order to detemine the considerable factors for hospitalization of asthmatic children in our patients, we carried out a retrospective study of children with asthma who were admitted to children medical center affiliated to tehran university of medical sciences over a 3 year period ( 1993...