Publications

Background: Video laryngoscope (VLs) has become a mandate in airway management.
Every VLs have a unique design that warrants the need for intricate analysis and
research concerning its efficacy. Aims and Objectives: This prospective randomized
controlled trial was designed to compare the performance of channeled King Vision
VLs (KVVLs) and hyperangulated CMAC-D blades for endotracheal intubation in
head and neck surgeries. Materials and Methods: Institutional Ethical Clearance
and Clinical Trials Registry-India registration were obtained. Informed consent of
110 patients of American Society of Anesthesiologists classification I and II, aged
between 18 and 59 years of either gender was taken, and was randomly allocated
into two groups. Standard induction for general anesthesia was given. Patients
were intubated using either of two VLs. The primary outcome was mean time
taken for intubation, and secondary outcomes were ease of intubation by intubation
difficulty scoring, hemodynamic response following laryngoscopy, intubation, and
their associated complications. Results: The total time taken for intubation was
comparable between both KVVLs and CMAC-D blade (30.45±6.53 s, 27.85±9.04
s; P=0.087). Glottic visualization by percentage of glottic opening scoring was
significantly better with the CMAC-D blade (P=0.049). The need for assist
maneuvers and alternate techniques was more required by KVVLs than CMAC-D
blades (P=0.004 and 0.028, respectively). The intergroup hemodynamic variables
and complications associated with laryngoscopy were not statistically significant.
Conclusion: Both KVVLs and CMAC-D blades were equally efficient in managing
the airway in head and neck surgeries. KVVLs offer practical advantages making it
ideal for resource-limited settings, with its performance remaining uncompromised
even in absence of a CMAC-D blade.