نتایج جستجو برای: airway resistance
تعداد نتایج: 455433 فیلتر نتایج به سال:
the impulse oscillation system (ios) measures respiratory impedance (zrs) in terms of resistance (rrs) and reactance (xrs) at multiples of 5 hz. these measurements can be used clinically to help diagnose and monitor respiratory disorders, independent of effort. there is, as yet, no information on reference values for ios in iranian adolescents. the predictive equation for resistance and impedan...
Background & Aim: The aim of this study was to compare air way resistance and dynamic compliance of tracheal tube and laryngeal tube in TIVA(Total Intravenous Anesthesia). Nowadays, low airway resistance and dynamic compliance improvement during the mechanical ventilation whether in ICU or during general anesthesia, especially in patients with pulmonary diseases, is a favorable purpose to c...
Active anterior rhinomanometric (AAR) evaluation of nasal airway resistance in normal Iranian sample
Abstract: Background: The most important and complex phenomenon of respiratory function of the nose is related to different nasal anatomy. The differences in facial anatomic structure between different races may also be reflected in nasal resistance and airflow. Caucasians has different facial anatomic structure which is the reflection of intranasal resistance or consequence of airflow. The...
active anterior rhinomanometric (aar) evaluation of nasal airway resistance in normal iranian sample
abstract: background: the most important and complex phenomenon of respiratory function of the nose is related to different nasal anatomy. the differences in facial anatomic structure between different races may also be reflected in nasal resistance and airflow. caucasians has different facial anatomic structure which is the reflection of intranasal resistance or consequence of airflow. the a...
Abstract Background & Aims: The peripheral parts of the lung are known as the main place of airflow obstruction in asthmatic patients; but the symptoms of asthma with the location of airway obstruction are still unknown. The aim of this study was to evaluate the association between asthma symptoms and severity of asthma and proximal and distal airways using function tests. Materials &...
Satisfactory methods, utilizing measurements of transthoracic or transpulmonary pressure and airflow, are now available for determining "nonelastic" pulmonary resistance. However, the nonelastic pulmonary resistance has two components, tissue resistance and airway resistance, and no valid direct method is available for measuring either of these components separately in man. Since airway resista...
background the relationship between gastroesophageal reflux (gerd) and airway diseases is still a matter of debate. oscillometry is an objective, independent tool for the evaluation of airway resistance. the main purpose of this study is to comparespirometry and oscillometry results before and after treatment by a proton pump inhibitor (ppi) in a group of gerd patients who have no respiratory s...
background the forced oscillation technique (fot) is a non-invasive means of measuring respiratory resistance and reactance. we tested our hypothesis that endotracheal intubation would cause more substantial preoperative increases in fot parameters than a supraglottic airway device (sgd). methods forty patients requiring general anesthesia and mechanical ventilation for transurethral bladder tu...
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