{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T18:50:59Z","timestamp":1773427859575,"version":"3.50.1"},"reference-count":18,"publisher":"American Physiological Society","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Applied Physiology"],"published-print":{"date-parts":[[2002,6,1]]},"abstract":"<jats:p> The static mechanical properties of the passive pharynx were investigated in Vietnamese pot-bellied pigs by using an isolated upper airway preparation. During general anesthesia and neuromuscular blockade, cross-sectional area ( A) of the pharynx was measured while airway pressure (Paw) was held at various pressures in the absence of airflow. The static A-Paw relationship was measured during application of 0, 1, and 2 cm of caudal tracheal displacement. Relative to humans, closing pressures (Pclose) of the pig pharynx were very low (\u221215 to \u221235 cmH<jats:sub>2<\/jats:sub>O). Tracheal displacement significantly decreased compliance of the hypopharynx (from 0.074 \u00b1 0.02 cm<jats:sup>2<\/jats:sup>\/cmH<jats:sub>2<\/jats:sub>O with no displacement to 0.052 \u00b1 0.01 cm<jats:sup>2<\/jats:sup>\/cmH<jats:sub>2<\/jats:sub>O with 2 cm of displacement) and decreased Pclose of the oropharynx (from \u221218.2 \u00b1 9.9 cmH<jats:sub>2<\/jats:sub>O to \u221224.1 \u00b1 10.5 and \u221228.7 \u00b1 12.3 cmH<jats:sub>2<\/jats:sub>O with 1 and 2 cm of displacement, respectively). Tracheal displacement did not affect A of the pharyngeal segments. In conclusion, tracheal displacement decreased collapsibility of the passive pharynx. The pharynx of the pot-bellied pig is structurally more resistant to collapse than the human pharynx. <\/jats:p>","DOI":"10.1152\/japplphysiol.00761.2001","type":"journal-article","created":{"date-parts":[[2015,3,3]],"date-time":"2015-03-03T20:40:32Z","timestamp":1425415232000},"page":"2229-2235","source":"Crossref","is-referenced-by-count":12,"title":["Mechanical properties of the passive pharynx in  Vietnamese pot-bellied pigs. I. 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