{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T11:49:42Z","timestamp":1777376982122,"version":"3.51.4"},"reference-count":18,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[1994,4,1]],"date-time":"1994-04-01T00:00:00Z","timestamp":765158400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Anaesth Intensive Care"],"published-print":{"date-parts":[[1994,4]]},"abstract":"<jats:p>Magnetic Resonance Imaging was used to quantify the effects of 1. sedation and 2. general anaesthesia with a laryngeal mask airway (LMA) in place on the minimum antero-posterior (A-P) diameters of the naso-, oro- and hypopharynx and on the angle of the epiglottis relative to the adjacent posterior pharyngeal wall. Median saggital T1-weighted images of the pharynx were obtained in 46 patients (16 awake, 14 sedated, 16 under general anaesthesia). In sedated patients, the A-P diameters of the pharynx were less than in awake patients, in particular at the levels of the epiglottis and soft palate. General anaesthesia and placement of a LMA was also associated with a reduced A-P diameter at the level of the soft palate, but with increased diameters at the levels of the tongue and epiglottis. Placement of a LMA caused abnormal downfolding of the epiglottis in most cases but this did not cause clinically significant airway obstruction.<\/jats:p>","DOI":"10.1177\/0310057x9402200208","type":"journal-article","created":{"date-parts":[[2019,1,14]],"date-time":"2019-01-14T12:12:21Z","timestamp":1547467941000},"page":"165-169","source":"Crossref","is-referenced-by-count":87,"title":["Assessment of Upper Airway Anatomy in Awake, Sedated and Anaesthetised Patients Using Magnetic Resonance Imaging"],"prefix":"10.1177","volume":"22","author":[{"given":"G. D.","family":"Shorten","sequence":"first","affiliation":[{"name":"Departments of Anaesthesia and Radiology, Sir Charles Gairdner Hospital, Perth, Western Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. 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