Bronchial asthma is well defined by the clinical characteristics including chronic airway inflammation, recurrent reversible airway obstruction and development of airway hyperresponsiveness as pathogenic components. Several studies have shown that genetic, environmental, immunologic, and pharmacologic factors contribute to the development of this complex disease. However, there is one important...

Chondrosarcoma is categorized as a malignant cartilaginous tumor, which occurs rarely in the craniofacial region. We report the case of a 68-year-old man with chondrosarcoma in the subglottic area. His chief symptoms were hoarseness and mild dysphagia. A computed tomography scan revealed a lesion with expansion of the cricoid cartilage and marked reduction of the airway. After biopsy, histologi...

Although there is abundant literature for both experimental and numerical studies of respiratory aerosol exposure in nasal airways, research efforts concentrating on diseased cavities undergoing pathological changes remain significantly less. This paper presents a comparative study pre- post-operative airway models based 3-year-old cavity model with severe nasopharynx obstruction due to the pre...

Airway remodeling in asthma and chronic obstructive pulmonary disease (COPD) results in thickening of bronchial walls and may affect lung function. In the present study we set out to evaluate the relationship between small airway wall thickness and the lung function parameters in patients with asthma and COPD. The study was performed in 10 patients with asthma (4M/6F, the mean age 37+/-13 yr) a...

objectives the current study aimed to compare the two methods based on the perceptions of the nurses working in neonatal intensive care units (nicu). patients and methods a comparative-descriptive study carried out on 35 nicu nurses in taleghani and al-zahra teaching hospitals in tabriz, iran, in 2013. data were collected by self-administered questionnaire (13 items). data analysis, including t...