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The study hypothesises that the variability in relief of air hunger with inhaled furosemide that is reported in previous studies can be explained by the breathing pattern adopted during the inhalation and the droplet size in the aerosol, both of which would influence the site of deposition of the aerosol in the lungs
Recent studies suggest that inhaling furosemide as a mist reduces air hunger in healthy volunteers in whom air hunger is induced experimentally in the lab. However, how much reduction varies among individuals. It is not known if the way the mist is breathed (slow/deep or fast/shallow) or the size of the droplets in the mist (large or small) can explain the variation in relief. Both of these factors can influence the site of deposition of the aerosol in the lungs
In this study the relief of air hunger (induced by hypercapnia and constrained ventilation) will be compared when furosemide is inhaled quickly or slowly, and when the mist has large or small droplets. 20 healthy volunteers will be recruited. After a practice session, the 'air hunger' test will be performed before and after 4ml of a 10mg/ml solution of furosemide (40mg). This will be repeated on 4 separate test days using a different method of inhaling the furosemide on each day.
Oxford Brookes University
Oxford Brookes University
Published on BioPortfolio: 2019-10-24T12:49:55-0400
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Persons with no known significant health problems who are recruited to participate in research to test a new drug, device, or intervention as controls for a patient group. (from http://clinicalcenter.nih.gov/recruit/volunteers.html, accessed 2/14/2013)
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