Sulfuric acid aerosols occur in the ambient particulate mode due to atmospheric conversion from sulfur dioxide (SO2). This paper describes the response of the rabbit tracheobronchial tree to daily exposures to sulfuric acid (H2SO4) aerosol, relating physiological and morphological parameters. Rabbits were exposed to filtered air (sham control) or to submicrometer-sized H2SO4 at 250 micrograms/m...

OBJECTIVES To review alternative surgical and anaesthetic options in the management of foreign bodies lodged in the tracheobronchial tree in children aged below 10 years. DESIGN A five year retrospective secondary data analysis. SETTING Three hospitals based in Eldoret Municipality, Kenya. MAIN OUTCOME MEASURES Outcome variables included morbidity and mortality. RESULTS Of the thirty tw...

Cystic fibrosis is the most common autosomal recessive hereditary disease in white populations. It characterized by formation of abnormal secretions exocrine glands located sweat and salivary glands, tracheobronchial tree, large intestine, pancreas. The severity clinic depends on type "cystic transmembrane regulatory protein" gene mutation. Although cases are diagnosed infancy or childhood, som...

introduction: tracheobronchial foreign body may often be treated as asthma, chronic bronchitis or etc. especially in patients with no memories of aspiration episodes. case presentation: a 74-year-old woman, suffering from persistent cough, was temporarily misdiagnosed with allergic bronchopulmonary aspergillosis and treated for six months. during this period, computed tomography (ct) findings c...

in asthmatic subjects there is a pronounced diurnal variation in bronchial responsiveness. if this phenomenon is due to variation in factors that control drug delivery, then it should be paralleled by a similar variation in competitive antagonist blockade. in order to study this possibility, we performed the methacholine challenge test and after 45 minutes, administered atropine by inhalation. ...

Numerous transportation networks in living systems are pulsatile branching trees. Due to the alternating character of the flow, these trees have to simultaneously satisfy two constraints: (1) they have to deliver the carried products in a limited time, (2) they must exhibit a satisfactory aerodynamic performance in both directions of the flow. We report here that introducing a systematic branch...