{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T15:32:46Z","timestamp":1787758366067,"version":"build-2784847793"},"reference-count":18,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,7]]},"abstract":"\n Background and Aims:<\/jats:title>\n Video laryngoscopy has been shown to improvise Cormack\u2013Lehane grading and rate of successful tracheal intubation and is now incorporated in most of the difficult airway guidelines. Since there is scarce literature regarding the use of channeled blade of King Vision video laryngoscope (KVVL) in anticipated difficult intubation, we planned to undertake this randomized control trial to assess the performance of channeled blade of KVVL and Macintosh laryngoscope in patients with anticipated difficult intubation.<\/jats:p>\n <\/jats:sec>\n \n Design and Setting:<\/jats:title>\n This prospective randomized study was conducted in a tertiary care hospital.<\/jats:p>\n <\/jats:sec>\n \n Materials and Methods:<\/jats:title>\n Patients fulfilling the inclusion criteria were randomly assigned equally to the KVVL group or Macintosh group. The primary outcome of the study was intubation success in the first attempt and number of attempts required for intubation, and the secondary outcomes were Cormack\u2013Lehane grading and time required to intubate in both the groups.<\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n The first-pass success of intubation was 88.6% in the KVVL group and 76.5% in the Macintosh group (\n P<\/jats:italic>\n = 0.035). The second attempt of intubation was required in 11.4% and 20.6% of patients in the KVVL and Macintosh groups, respectively. Cormack Lehane Grade I was achieved in 100% of patients of the KVVL group as compared to 29.4% of patients in the Macintosh group. Moreover, the difference was statistically significant (\n P<\/jats:italic>\n = 0.035). The mean duration of intubation was prolonged in the KVVL group as compared to the Macintosh group, and the difference was statistically significant (\n P<\/jats:italic>\n = 0.04).\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion:<\/jats:title>\n The channeled blade of KVVL had a higher first-pass success rate and required fewer attempts to intubate when used in patients with anticipated difficult intubation. Further, the KVVL was found to be significantly better than the Macintosh laryngoscope in terms of Cormack\u2013Lehane grading, but the time taken to intubate the trachea was more in the KVVL group.<\/jats:p>\n <\/jats:sec>","DOI":"10.4103\/aer.aer_68_22","type":"journal-article","created":{"date-parts":[[2022,10,31]],"date-time":"2022-10-31T07:51:16Z","timestamp":1667202676000},"page":"340-344","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["First-pass Success Rate and Number of Attempts Required for Intubation in Anticipated Difficult Airway"],"prefix":"10.4103","volume":"16","author":[{"given":"Rameez","family":"Raja","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sunana","family":"Gupta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nandita","family":"Mehta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Prerna","family":"Attal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"R1-11-20240901","doi-asserted-by":"crossref","first-page":"757","DOI":"10.1007\/BF03012147","article-title":"The unanticipated difficult airway with recommendations for management","volume":"45","author":"Crosby","year":"1998","journal-title":"Can J Anaesth"},{"key":"R2-11-20240901","doi-asserted-by":"crossref","first-page":"827","DOI":"10.1093\/bja\/aev371","article-title":"Difficult airway society 2015 guidelines for management of unanticipated difficult intubation in adults","volume":"115","author":"Frerk","year":"2015","journal-title":"Br J Anaesth"},{"key":"R3-11-20240901","doi-asserted-by":"crossref","first-page":"885","DOI":"10.4103\/0019-5049.195481","article-title":"All india difficult airway association 2016 guidelines for the management of unanticipated difficult tracheal intubation in adults","volume":"60","author":"Myatra","year":"2016","journal-title":"Indian J Anaesth"},{"key":"R4-11-20240901","doi-asserted-by":"crossref","first-page":"36","DOI":"10.4103\/aer.AER_165_18","article-title":"A prospective crossover study evaluating the efficacy of king vision video laryngoscope in patients requiring general anesthesia with endotracheal intubation","volume":"13","author":"Avula","year":"2019","journal-title":"Anesth Essays Res"},{"key":"R5-11-20240901","doi-asserted-by":"crossref","first-page":"943","DOI":"10.4103\/ija.IJA_154_20","article-title":"Comparison of paediatric King Vision\u2122 videolaryngoscope and macintosh laryngoscope for elective tracheal intubation in children of age less than 1 year: A randomised clinical trial","volume":"64","author":"Manirajan","year":"2020","journal-title":"Indian J Anaesth"},{"key":"R6-11-20240901","doi-asserted-by":"crossref","first-page":"670","DOI":"10.1093\/bja\/aew058","article-title":"Evaluation of six videolaryngoscopes in 720 patients with a simulated difficult airway: A multicentre randomized controlled trial","volume":"116","author":"Kleine-Brueggeney","year":"2016","journal-title":"Br J Anaesth"},{"key":"R7-11-20240901","doi-asserted-by":"crossref","first-page":"166","DOI":"10.1186\/s12871-019-0838-z","article-title":"A randomized controlled comparison of non-channeled King vision, McGrath MAC video laryngoscope and Macintosh direct laryngoscope for nasotracheal intubation in patients with predicted difficult intubations","volume":"19","author":"Zhu","year":"2019","journal-title":"BMC Anesthesiol"},{"key":"R8-11-20240901","doi-asserted-by":"crossref","first-page":"363","DOI":"10.4103\/joacp.JOACP_245_18","article-title":"A comparison of King vision video laryngoscope with CMAC D-blade in obese patients with anticipated difficult airway in tertiary hospital in India \u2013 Randomized control study","volume":"35","author":"Sahajanandan","year":"2019","journal-title":"J Anaesthesiol Clin Pharmacol"},{"key":"R9-11-20240901","doi-asserted-by":"crossref","first-page":"641","DOI":"10.1016\/j.bjan.2016.08.006","article-title":"King vision video laryngoscope for severe post burn contracture neck: An encouraging experience","volume":"67","author":"Ali","year":"2017","journal-title":"Rev Bras Anestesiol"},{"key":"R10-11-20240901","doi-asserted-by":"crossref","first-page":"139","DOI":"10.3390\/diagnostics10030139","article-title":"Video laryngoscopic intubation using the King visiontm laryngoscope in a simulated cervical spine trauma: A comparison between non-channeled and channeled disposable blades","volume":"10","author":"Votruba","year":"2020","journal-title":"Diagnostics (Basel"},{"key":"R11-11-20240901","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1097\/EJA.0000000000000326","article-title":"Using the C-MAC videolaryngoscope as a first-line device for out-of-hospital emergency intubation","volume":"33","author":"Li","year":"2016","journal-title":"Eur J Anaesthesiol"},{"key":"R12-11-20240901","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1111\/acem.12055","article-title":"The importance of first pass success when performing orotracheal intubation in the emergency department","volume":"20","author":"Sakles","year":"2013","journal-title":"Acad Emerg Med"},{"key":"R13-11-20240901","doi-asserted-by":"crossref","first-page":"740","DOI":"10.1213\/ANE.0000000000001084","article-title":"First-attempt intubation success of video laryngoscopy in patients with anticipated difficult direct laryngoscopy: A multicenter randomized controlled trial comparing the C-MAC D-blade versus the glidescope in a mixed provider and diverse patient population","volume":"122","author":"Aziz","year":"2016","journal-title":"Anesth Analg"},{"key":"R14-11-20240901","doi-asserted-by":"crossref","first-page":"607","DOI":"10.1213\/01.ANE.0000122825.04923.15","article-title":"Emergency tracheal intubation: Complications associated with repeated laryngoscopic attempts","volume":"99","author":"Mort","year":"2004","journal-title":"Anesth Analg"},{"key":"R15-11-20240901","doi-asserted-by":"crossref","first-page":"1532","DOI":"10.1111\/anae.14057","article-title":"Videolaryngoscopy versus-direct laryngoscopy use by experienced anaesthetists in patients with known difficult airways: A systematic review and meta-analysis","volume":"72","author":"Pieters","year":"2017","journal-title":"Anaesthesia"},{"key":"R16-11-20240901","doi-asserted-by":"crossref","first-page":"i9","DOI":"10.1093\/bja\/aew052","article-title":"Seeing is believing: Getting the best out of videolaryngoscopy","volume":"117","author":"Kelly","year":"2016","journal-title":"Br J Anaesth"},{"key":"R17-11-20240901","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1093\/bja\/aev193","article-title":"Videolaryngoscopy as a new standard of care","volume":"115","author":"Lafferty","year":"2015","journal-title":"Br J Anaesth"},{"key":"R18-11-20240901","first-page":"30","article-title":"Randomized controlled trial comparing the McGrath MAC video laryngoscope with the King vision video laryngoscope in adult patients","volume":"82","author":"Alvis","year":"2016","journal-title":"Minerva Anestesiol"}],"container-title":["Anesthesia Essays & Researches"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.4103\/aer.aer_68_22","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T15:13:28Z","timestamp":1787757208000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.4103\/aer.aer_68_22"}},"subtitle":["Comparison between Macintosh and Channeled King Vision Video Laryngoscopes"],"short-title":[],"issued":{"date-parts":[[2022,7]]},"references-count":18,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2022]]}},"URL":"https:\/\/doi.org\/10.4103\/aer.aer_68_22","relation":{},"ISSN":["0259-1162"],"issn-type":[{"value":"0259-1162","type":"print"}],"subject":[],"published":{"date-parts":[[2022,7]]}}}