Nasal airflow resistance at simulated altitude
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چکیده
منابع مشابه
Nasal airflow resistance at simulated altitude.
This issue includes an important paper by BARRY et al. [1] in which the changes in nasal peak inspiratory flow (NPIF), and oral peak inspiratory flow (OPIF), during acclimatized exposure to low barometric pressure (equivalent to a simulated altitude of 8000 m, about the height of Mount Everest) of subjects in a hypobaric chamber were analysed. The changes were presumably due to hypoxia and its ...
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STUDY OBJECTIVES The aim of this study was to investigate whether nasal prongs, which have been proposed to assess nasal flow during sleep, affect nasal airflow resistance (NR). DESIGN NR was estimated by posterior rhinomanometry at a 0.5 L/s flow, under eight conditions: in the basal state, and with seven different nasal prongs. PARTICIPANTS The study was performed in 17 healthy supine sub...
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Laboratory Centre for Disease Control (Canada). Clin Infect Dis 2001; 33: 492–503. 3 Kern DG, Neill MA, Schachter J. A seroepidemiologic study of Chlamydia pneumoniae in Rhode Island. Evidence of serologic cross-reactivity. Chest 1993; 104: 208–213. 4 Johnston SL, Blasi F, Farrell DJ, Nieman RB. Chlamydia pneumoniae infection in patients with acute exacerbations of asthma: the TELICAST study. A...
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There have been a number of anecdotal reports of rhinitis and nasal obstruction occurring at altitude. To quantify these reports, we investigated nasal obstruction and mucociliary transport in a group of healthy volunteers trekking to Mount Everest Base Camp, Nepal, altitude 5,300 m. Nasal obstruction was estimated by subjective scoring and mucociliary transport was determined by the saccharin ...
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At high altitudes, the air pressure is much lower than it is at sea level and contains fewer oxygen molecules and less oxygen is taken in at each breath. This requires deeper and rapid breathing to get the same amount of oxygen into the blood stream compared to breathing in air at sea level. Exercises increase the oxygen demand and make breathing more difficult at high altitude. In this study, ...
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ژورنال
عنوان ژورنال: European Respiratory Journal
سال: 2001
ISSN: 0903-1936,1399-3003
DOI: 10.1183/09031936.02.00282902