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Numerical calculations based on CFD (computational fluid dynamics) have been proven to be a valuable tool to analyze flows in diverse applications.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The complexity of the human lung disallows running calculations on complete lung models due to the large number of cells that would be required. In this work, using a proprietary methodology, particle deposition in the lung is simulated by reducing its multiple branches to a single path.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The tested flow rates were 18, 30, and 75\u2009L\u2009min<jats:sup>\u22121<\/jats:sup>, which are equivalent to different respiratory rates varying from light activity to heavy exercise. Most of the particles are accumulated in the upper airways, mainly at the mouth and also at the confluence of the larynx and the trachea (epiglottis), while the remaining particles travel across the lung. The reported procedure allowed simulating the operation of the entire lung by means of a single individual path.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The obtained calculations are in good agreement with the experimental results found in the technical literature, thus showing that the model can provide a realistic description of the lung operation, while avoiding high computational costs. Moreover, the calculations suggest that particle sizes above 15\u2009\u03bcm and inspiratory flows higher than 30\u2009L\u2009min<jats:sup>\u22121<\/jats:sup> must be avoided in order to allow drug particles to reach the lower airways.<\/jats:p><\/jats:sec>","DOI":"10.1002\/cnm.3339","type":"journal-article","created":{"date-parts":[[2020,4,1]],"date-time":"2020-04-01T05:00:28Z","timestamp":1585717228000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["In silico prototype of a human lung with a single airway to predict particle deposition"],"prefix":"10.1002","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5944-4023","authenticated-orcid":false,"given":"Ana","family":"Fern\u00e1ndez\u2010Tena","sequence":"first","affiliation":[{"name":"Facultad de Enfermer\u00eda, Universidad de Oviedo. 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