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Channelled Blade Versus Non-Channelled Videolaryngoscope

Comparative Study of the Channelled Blade Astra-Vue Videolaryngoscope and the Non-Channelled CMAC D-Blade Videolaryngoscope in Airway Management: A Randomized Controlled Trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07577648
Enrollment
60
Registered
2026-05-11
Start date
2025-12-01
Completion date
2026-05-31
Last updated
2026-05-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Airway Management

Keywords

intubation, videolaryngoscope, first attempt success rate, ease of intubation, time to intubation

Brief summary

The goal of this clinical trial is to learn if performance of a channelled blade Astra-Vue videolaryngoscope compared to non channelled hyperangulated C-MAC D-blade videolaryngoscope(Karl Storz, Tuttlingen, Germany) in airway management among adults undergoing elective surgery under general anesthesia. The main primary outcomes measured is the overall time taken to intubation, secondary measures includes the first attempt success rate, ease with intubation and associated complication Participants are of adults who planned for elective or semi emergency surgery under general anesthesia. They will be screened and recruited with informed and written consent. Intubation information will be collected

Detailed description

This randomized controlled trial aims to compare the performance of a channelled videolaryngoscope (AstraVue videolaryngoscope) with a non-channelled hyperangulated videolaryngoscope (C-MAC™ D-Blade videolaryngoscope, Karl Storz, Tuttlingen, Germany) in adult patients undergoing elective or semi-emergency surgery under general anaesthesia requiring endotracheal intubation. Participants will be randomly assigned to intubation using either the channelled AstraVue videolaryngoscope or the non-channelled C-MAC D-Blade videolaryngoscope. Standard anaesthesia induction protocols will be followed. The primary outcome is the total time to successful intubation. Secondary outcomes include time to glottic visualization, time from glottic visualization to intubation, first-attempt success rate, number of attempts, need for external laryngeal manipulation, haemodynamic responses, and intubation-related complications. Data will be collected prospectively during the peri-intubation period. The study aims to evaluate whether the channelled design improves intubation efficiency and success compared to the non-channelled videolaryngoscope.

Interventions

DEVICEchannelled blade videolaryngoscope

Intubation with channelled blade videolaryngoscope

DEVICENon channelled hyperangulated blade videolaryngoscope

Intubation done by using Non channelled hyperangulated blade videolaryngoscope

Sponsors

University of Malaya
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

* Adult patients aged 18 to 70 years old requiring endotracheal intubation for elective or semi-emergency surgery under general anaesthesia * ASA I, II and stable ASA III patients * Patient with Mallampati Score Grade 1 to 3

Exclusion criteria

* Patients with known airway abnormalities or anticipated difficult intubation, * Patients with desaturation before intubation, * Patients with high risk for aspiration requiring rapid sequence induction * Patient with known cervical pathology. * Patient refuse to participate

Design outcomes

Primary

MeasureTime frameDescription
Total Time to intubationDuring the intubation procedure (within minutes after induction of general anaesthesia)time from insertion of laryngoscope blade through incisor teeth to visualization of Endotracheal tube into trachea, measured in seconds

Secondary

MeasureTime frameDescription
Ease of intubationDuring the intubation procedure an immediate post-intubation period (within minutes after induction of general anaesthesia)Ease of intubation assessed using a modified Intubation Difficulty Scale (IDS), which includes parameters such as number of attempts, additional operators, alternative techniques, lifting force, external laryngeal pressure, vocal cord position, and intubation difficulty. The total score ranges from 0 to ≥5, where a score of 0 classified as easy, 1 to 5 classified as slight difficulty, and \>5 as moderate to major difficulty, generally higher score means increasing difficulty
Change in Mean Arterial Pressure from baselineBaseline taken during induction prior to intubation, second reading repeated at 1 minute after successful intubationChange in Mean arterial pressure measured at 1 minute after successful intubation, expressed as percentage change from baseline value
Change in Heart rate from baselineBaseline measured prior to intubation, second reading repeat at 1 minute post intubationChange in heart rate measured at 1 minute after succesful intubation, expressed as percentage change from baseline value
First attempt success rateDuring the intubation procedure(within minutes after induction of general anaesthesia)Successful endotracheal intubation on the first attempt, measured as a proportion of total intubations(%)
Time to Glottic VisualizationDuring the intubation procedure(within minutes after induction of general anaesthesia)time from insertion of laryngoscope blade to visualization of glottis, measured in seconds

Countries

Malaysia

Contacts

PRINCIPAL_INVESTIGATORWei Yen Yeoh

Universiti Malaya

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 12, 2026