{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T15:55:43Z","timestamp":1783353343250,"version":"3.54.6"},"reference-count":33,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2018,4,16]],"date-time":"2018-04-16T00:00:00Z","timestamp":1523836800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["associationofanaesthetists-publications.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Anaesthesia"],"published-print":{"date-parts":[[2018,7]]},"abstract":"<jats:title>Summary<\/jats:title>\n                  <jats:p>\n                    Head and neck position is one of the factors which can be associated with difficult videolaryngoscopy and tracheal intubation. This prospective randomised clinical trial compared \u2018sniffing\u2019 and neutral positions using a channelled (KingVision\n                    <jats:sup>\u00ae<\/jats:sup>\n                    ) and a non\u2010channelled (C\u2010\n                    <jats:styled-content style=\"fixed-case\">MAC<\/jats:styled-content>\n                    <jats:sup>\u00ae<\/jats:sup>\n                    D\u2010blade) videolaryngoscope in 200 adult patients randomly allocated into four groups (KingVision \u2018sniffing\u2019, KingVision neutral, C\u2010\n                    <jats:styled-content style=\"fixed-case\">MAC<\/jats:styled-content>\n                    \u2018sniffing\u2019 and C\u2010\n                    <jats:styled-content style=\"fixed-case\">MAC<\/jats:styled-content>\n                    neutral). The primary outcome was the ease of tracheal intubation using the modified intubation difficulty scale (\n                    <jats:styled-content style=\"fixed-case\">mIDS<\/jats:styled-content>\n                    ) score. Laryngoscopy time, intubation time, laryngoscopic view using the percentage of glottic opening (\n                    <jats:styled-content style=\"fixed-case\">POGO<\/jats:styled-content>\n                    ) score and success rate of tracheal intubation were secondary outcomes. The median (\n                    <jats:styled-content style=\"fixed-case\">IQR<\/jats:styled-content>\n                    [range]) modified difficulty scale scores for the four groups, respectively, were 0 (0\u20131 [0\u20133]), 0 (0\u20131 [0\u20134]), 1 (0\u20131 [0\u20135]) and 0 (0\u20131 [0\u20133]; p = 0.384). There was no significant difference in laryngoscopy time (p = 0.020), intubation time (p = 0.272) and success rate (p = 0.968) between the groups. The percentage of glottic opening score was lower for C\u2010\n                    <jats:styled-content style=\"fixed-case\">MAC<\/jats:styled-content>\n                    neutral group as compared with other three groups (p = 0.01). There was no significant difference in the ease of intubation between the \u2018sniffing\u2019 and the neutral position when using the KingVision and the C\u2010\n                    <jats:styled-content style=\"fixed-case\">MAC<\/jats:styled-content>\n                    videolaryngoscopes. Therefore, either of the two positions could be used with these types of videolaryngoscopes, if deemed advantageous for the patient.\n                  <\/jats:p>","DOI":"10.1111\/anae.14289","type":"journal-article","created":{"date-parts":[[2018,4,16]],"date-time":"2018-04-16T17:20:57Z","timestamp":1523899257000},"page":"847-855","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["A randomised clinical trial comparing the \u2018sniffing\u2019 and neutral position using channelled (KingVision\n                    <sup>\u00ae<\/sup>\n                    ) and non\u2010channelled (C\u2010\n                    <scp>MAC<\/scp>\n                    <sup>\u00ae<\/sup>\n                    ) videolaryngoscopes"],"prefix":"10.1111","volume":"73","author":[{"given":"C.","family":"Mendonca","sequence":"first","affiliation":[{"name":"University Hospitals Coventry and Warwickshire NHS Trust Coventry 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