Upper Airway Obstruction*
نویسنده
چکیده
Chronic upper airway obstruction is frequently unrecognized or misdiagnosed as other conditions such as asthma or chronic airflow obstruction (CAO). Clinical features such as stridor may lead to diagnosis or it may initially be suspected from the results of pulmonary function tests (PFTs) ordered for another reason. We will review the physiology and the pulmonary function tests which are necessary to understand and diagnose upper airway obstruction (UAO) and to differentiate this from lower airflow limitation. The classification of UAO based on the location of the lesion (intrathoracic or extrathoracic) and the nature of the lesion (fixed or variable) will be emphasized.
منابع مشابه
Correlation Between Upper Airways Obstructive Indexes in Adenotonsilar Hypertrophy with Mean Pulmonary Arterial Pressure
Introduction: Hypertrophied tonsils and adenoids may cause upper airway obstruction and cardio-pulmonary complications due to pulmonary arterial hypertension. The aim of this study was to determine the correlation between mean pulmonary arterial pressure (mPAP) and selected adenotonsilar hypertrophy indexes. Materials and Methods: Thirty two patients with upper-airway obstruction resulting ...
متن کاملبررسی شکل منحنی جریان و حجم در ضایعات انسدادی کارینا و برونش
Spirometry and flow - volume loop show the abnormal pattern of pulmonary dysfunction and the site of the obstruction of upper and peripheral airways. For determinig the shape of flow - volume loop in obstruction of carina and bronchus we examined 19 patients with large airway obstruction documented with fiberoptic bronchoscopy via pulmonary function testing and flow volume loop performing. Two...
متن کاملEffects of intranasal corticosteroids on decrease of adenoid hypertrophy in children
Introduction: Adenoid hypertrophy is associated with high morbidity rate in children. Although surgical treatment is indicated in severe cases, but there are evidences that some medical interventions are effective in improvement. This study was conducted to evaluate the effectiveness of corticosteroid nasal spray on reduction of airway obstruction due to adenoid hypertrophy. Methods: In a clini...
متن کاملA comparison on dentofacial cephalometric measurements between two mouth breathing groups with anterior and posterior obstructions of nasal airway
A comparison on dentofacial cephalometric measurements between two mouth breathing groups with anterior and posterior obstructions of nasal airway zaeim* - Dr. M.R. Baghersad** Dr. M.H. Toodeh * - Assistant Professor of Oral Orthodontics Dept. - Faculty of Dentistry - Yazd University of Medical Sciences. ** - Dentist. Background and aim: The goal of this study was to compare dentofacial cep...
متن کاملDetection of upper airway obstruction with spirometry results and the flow-volume loop: a comparison of quantitative and visual inspection criteria.
BACKGROUND There are important gaps in our understanding of the epidemiology and diagnosis of upper-airway obstruction. METHODS We examined the diagnostic value of several criteria for predicting upper-airway obstruction, and we measured the frequency of detecting upper-airway obstruction via quantitative and visual assessment of flow-volume loops. We studied 4 quantitative and 3 visual crite...
متن کاملUpper airway obstruction following adult respiratory distress syndrome. An analysis of 30 survivors.
To evaluate the effects of current supportive care measures for the adult respiratory distress syndrome (ARDS) upon the upper airway, we studied 30 survivors of ARDS. All patients were interviewed and examined and performed inspiratory and expiratory maximal flow-volume curves more than six months after the onset of ARDS. Three women had developed symptomatic upper airway obstruction due to lar...
متن کامل