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Year : 2019  |  Volume : 2  |  Issue : 1  |  Page : 10-16

Comparison of channelled blade with non-channelled Blade of King Vision™ videolaryngoscope for orotracheal intubation: A randomised, controlled, multicentric study

1 Department of Anaesthesia, Isha Multispeciality Hospital, Vadodara, Gujarat, India
2 Department of Anaesthesia, VINS, Vadodara, Gujarat, India
3 Department of Anaesthesia, KCHRC, Muni Seva Asharam, Goraj, Vadodara, Gujarat, India

Correspondence Address:
Dr. Amit Shah
Department of Anaesthesia, Isha Multispeciality Hospital, Vadodara, Gujarat
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ARWY.ARWY_8_19

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Introduction: We conducted a randomised, controlled, prospective, multicentric comparison of channelled blade versus non-channelled blade of the King Vision™ videolaryngoscope for orotracheal intubation. Patients and Methods: A total of 66 patients included in the study were divided into two groups as follows: Group CH for intubation with channelled blade and Group NC for intubation with non-channelled blade. We compared the intubation time, ease of intubation and best laryngeal view obtained. Ease of intubation was categorised into ease of device insertion and ease of passage of endotracheal tube. Various impingements which occurred at the laryngeal inlet were observed and manoeuvres used to accomplish intubation were noted. Results: The grade of laryngeal exposure and time of laryngeal exposure were similar in both types of blade. We found a shorter intubation time of 15.24 ± 10.6 s in Group CH, whereas it was 28.57 ± 14.09 s in Group NC (P < 0.001). Impingement of the endotracheal tube at the glottic inlet was similar in both the groups, but manoeuvring of the device was not needed after laryngeal exposure in the case of the non-channelled blade. Manoeuvres needed to accomplish successful intubation were different in each group. Intubation with channelled blade requires anticlockwise rotation of the endotracheal tube as it is advanced in the slot while slight withdrawal and redirection towards the centre was needed most often with the non-channelled type of blade. Conclusions: We conclude that when used with the channelled blade, the King Vision videolaryngoscope requires shorter intubation time as compared to its use with the non-channelled blade. Anticlockwise rotation of the advancing endotracheal tube within the channel slot overcomes major impingement at the larynx and facilitates intubation with the use of channelled blade while slight withdrawal and redirection towards the centre are needed for successful intubation using the non-channelled blade.

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