background :respiratory viruses are the leading cause of respiratory tract infections among children and are responsible for causing morbidity and mortality worldwide. this study was performed to detect viruses in children with respiratory infections and describe their epidemiology and clinical characteristics.   methods : in this descriptive cross sectional study, throat swabs and wash specime...

background: despite the widespread use of respiratory protection equipment in different jobs, the effects of these devices on people’s physiological responses are not well recognized as yet. therefore, the aim of this study is to evaluate the effect of the air purifying respiratory protection equipment on the heart rate. methods: this experimental study was performed in a climate chamber under ...

introduction: there are several technical features that make pet an ideal device for the noninvasive evaluation of cardiac physiology. organ motion due to respiration is a major challenge in diagnostic imaging, especially in cardiac pet imaging. these motions reduce image quality by spreading the radiotracer activity over an increased volume, distorting apparent lesion size and shape and reduci...

respiratory disorders are major concern for dairy cattle industry. viruses and bacteria in combinationwith stress play a key role in triggering acute respiratory infections. the most important viral agents arebovine viral diarrhoea virus (bvdv), bovine herpes virus type 1 (bhv-1), bovine respiratory syncytial virus(brsv), parainfluenza virus type 3 (piv-3) and bovine adenovirus (bav). this cros...

conclusions the pediatric patients undergoing general anesthesia with lma with intravenous lidocaine experienced fewer incidence of postoperative cough compared to the ones in the topical lidocaine group. results one hundred and twenty four patients fulfilled the trial. cough (primary outcome) was significantly more frequent among those with topical compared with intravenous lidocaine (46% vs. ...

conclusions infection with hmpv and rsv are most frequent infections among pediatric patients with respiratory tract symptoms. coinfection with these viruses may exacerbate the clinical symptoms and increase hospitalization rates, especially in children younger than one year old. results the hmpv and rsv were detected in 44 (15.7%) and 84 (30.0%) samples, respectively. coinfection with both vir...

background: chest radiography is one of the most usual diagnostic tools for respiratory distress. objective: the purpose of this study is to assess the specificity, sensitivity and clinical value of chest radiography of neonates with respiratory distress.patients and methods: a descriptive- analytical study was conducted on 102 neonates that were in neonatal intensive care unit of imam reza and...

background: 3dcrt (three-dimensional conformal radiotherapy) and imrt (intensity-modulated radiotherapy) has provided us with tools to delineate the radiation dose distribution of tumor targets. however, the precision of radiation can be compromised by respiratory motion, which usually limits the geometric and dosimetric accuracy of radiotherapy. the purpose of this study is to evaluate the imp...

parapharyngeal abscess is a life-threatening disease. upper respiratory tract infection is the main cause in children. we present a 15-month-old boy admitted to the emergency ward with the chief complaint of difficulty in breathing caused by parapharyngealabscess. his condition deteriorated gradually, and he transferred to the operation theater quickly for abscess drainage and because of the di...

flour dust has been introduced as one of the effective factors in the prevalence of respiratory disorders among the workers of the flour production factories. the purpose of the present study is to examine the effects of this pollutant on the pulmonary functions and survey the prevalence of respiratory symptoms among workers of flour production factories in arak, iran.   exposure to flour dust ...