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A large\u2010eddy simulation, accurately capturing the spatiotemporal evolution of the flow in 3 dimensions together with the trajectories of squames, is performed for a realistic OR consisting of an operating table (OT), side tables, surgical lamps, medical staff, and a patient. Two cases are studied with blower\u2010off and blower\u2010on together with Lagrangian trajectories of 3 million squames initially placed on the floor surrounding the OT. The large\u2010eddy simulation results show that with the blower\u2010off, squames are quickly transported by the ventilation air away from the table and towards the exit grilles. In contrast, with the hot air blower turned on, the ventilation airflow above and below the OT is disrupted significantly. The rising thermal plumes from the hot air blower drag the squames above the OT and the side tables and then they are advected downwards toward the surgical site by the ventilation air from the ceiling. Temporal history of the number of squames reaching 4 imaginary boxes surrounding the side tables, the OT, and the patient's knee shows that several particles reach these boxes for the blower\u2010on case.<\/jats:p>","DOI":"10.1002\/cnm.2960","type":"journal-article","created":{"date-parts":[[2018,1,10]],"date-time":"2018-01-10T12:02:25Z","timestamp":1515585745000},"source":"Crossref","is-referenced-by-count":16,"title":["Effect of heated\u2010air blanket on the dispersion of squames in an operating room"],"prefix":"10.1002","volume":"34","author":[{"given":"X.","family":"He","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering Oregon State University  Corvallis OR USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"Karra","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering Oregon State University  Corvallis OR USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"P.","family":"Pakseresht","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering Oregon State University  Corvallis OR USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3359-324X","authenticated-orcid":false,"given":"S. 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