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Original Research | Anaesthesiology | Volume 15 Issue 6, June 2026 | Pages: 802 - 805 | India
Comparison of King Vision and McGrath MAC Videolaryngoscopes for Airway Management in Adult Patients Undergoing Elective Surgery: A Prospective Observational Study
Abstract: Background: Videolaryngoscopes have changed contemporary airway practice by offering an indirect view of the glottis without the need to align the oral, pharyngeal and laryngeal axes. The King Vision (a channelled device) and the McGrath MAC (a non-channelled, Macintosh-shaped device) follow two different design philosophies, and a direct head-to-head comparison during routine intubation is therefore of practical value. Aim: To compare the King Vision and McGrath MAC videolaryngoscopes with respect to ease of intubation, glottic visualisation, haemodynamic response and intubation-related complications in adult patients with a normal airway. Methods: Sixty adult patients (ASA I-III, 18-60 years) scheduled for elective surgery under general anaesthesia were allocated into two equal groups- Group K (King Vision) and Group M (McGrath MAC). Number of attempts, intubation time, optimisation manoeuvres, Cormack-Lehane grade, Intubation Difficulty Scale (IDS) score, serial haemodynamic variables and complications were recorded. Results: First-attempt success was 100% in Group M versus 86.66% in Group K (p<0.05). Mean intubation time was markedly shorter with the McGrath MAC (13.93±3.50 s) than the King Vision (30.07±9.70 s) (p<0.05). Group M provided a higher proportion of Cormack-Lehane grade I views (93.33% vs 80%) and lower IDS scores, and showed significantly more stable heart rate and blood pressure across all post-intubation time points. Conclusion: In adult patients with a normal airway, the McGrath MAC videolaryngoscope outperformed the King Vision videolaryngoscope, offering faster intubation, a better glottic view, lower intubation difficulty and superior haemodynamic stability with fewer complications.
Keywords: King Vision, McGrath MAC, videolaryngoscope, endotracheal intubation, Cormack?Lehane grade, Intubation Difficulty Scale, haemodynamic response
How to Cite?: Dr. Sarika Dhaduk, Dr. Harsha Patel, Dr. Neha Poker, "Comparison of King Vision and McGrath MAC Videolaryngoscopes for Airway Management in Adult Patients Undergoing Elective Surgery: A Prospective Observational Study", Volume 15 Issue 6, June 2026, International Journal of Science and Research (IJSR), Pages: 802-805, https://www.ijsr.net/getabstract.php?paperid=MR26615092850, DOI: https://dx.doi.org/10.21275/MR26615092850