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VL vs DL in Inexperienced Users: a Pediatric Manikin Study

Comparison of Miller and Macintosh Laryngoscopes, CMAC and Glidescope Videolaryngoscopes in Inexperienced Users: a Pediatric Manikin Study

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02991820
Enrollment
43
Registered
2016-12-14
Start date
2016-06-30
Completion date
2017-05-31
Last updated
2018-07-18

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

Conditions

Videolaryngoscopes (VL), Direct Laryngoscopy (DL), Inexperienced Users

Brief summary

This study will compare the CMAC and Glidescope videolaryngoscopes (VL) to traditional direct laryngoscopy (DL) using either a Miller or Macintosh laryngoscope by studying the performance of users. This will involve the use of an intubating pediatric manikin to assess various aspects of endotracheal intubation by experienced and inexperienced users.

Detailed description

The commonly used method for endotracheal intubation in children is direct laryngoscopy using a Miller or Macintosh blade. Videolaryngoscopy is a widely accepted pediatric airway management. Videolaryngoscopes (VL) provide an indirect view of glottis without the need to align the oral, pharyngeal, and glottis structures. Some types of VLs provide also direct view of glottis with indirect view. Videolaryngoscopes can be used as a teaching tool for learners as they can visualize all the anatomical structures of larynx at the same time with the performer. VLs may facilitate the learning of endotracheal intubation in inexperienced users in the pediatric population. There are limited data on the use of videolaryngoscopes by anesthesia providers and medical personnel who are inexperienced in the use of videolaryngoscopes.

Interventions

DEVICEMiller

Direct laryngoscopy and endotracheal intubation attempted by each provider using direct laryngoscopy (DL) with a Miller laryngoscope

DEVICEMacintosh

Direct laryngoscopy and endotracheal intubation attempted by each provider using DL with a Macintosh laryngoscope

DEVICEC-MAC

Indirect laryngoscopy and endotracheal intubation attempted by each provider using the C-MAC video laryngoscope

DEVICEGlideScope

Indirect laryngoscopy and endotracheal intubation attempted by each provider using the GlideScope video laryngoscope

Sponsors

Joseph D. Tobias
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER

Eligibility

Sex/Gender
ALL
Healthy volunteers
Yes

Inclusion criteria

* Faculty pediatric anesthesiologists * CRNAs * Trainees (SRNAs, residents, fellows, and medical students) * Nurses from NCH

Exclusion criteria

* If subjects are unwilling to participate.

Design outcomes

Primary

MeasureTime frameDescription
Time to Endotracheal Intubationthe same day (within seconds to minutes)The amount of time it took to successfully intubate the manikin using each device.

Secondary

MeasureTime frameDescription
Successful Intubation Within 120 Seconds2 minutesThe number of participants who were able to successfully intubate the manikin using each device within 120 seconds.

Countries

United States

Participant flow

Participants by arm

ArmCount
Inexperienced Users
Inexperienced users will include trainees (SRNAs, residents, fellows, and medical students) and nurses at NCH. Intubation: Each participant will perform endotracheal intubation on the mannequin using videolaryngoscopes (VL) and traditional direct laryngoscopy (DL).
12
Experienced Users
Experienced users will include faculty pediatric anesthesiologists CRNAs. Intubation: Each participant will perform endotracheal intubation on the mannequin using videolaryngoscopes (VL) and traditional direct laryngoscopy (DL).
31
Total43

Baseline characteristics

CharacteristicExperienced UsersTotalInexperienced Users
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
31 Participants43 Participants12 Participants
Race and Ethnicity Not Collected0 Participants
Region of Enrollment
United States
31 participants43 participants12 participants
Sex: Female, Male
Female
NA ParticipantsNA ParticipantsNA Participants
Sex: Female, Male
Male
NA ParticipantsNA ParticipantsNA Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 00 / 0
other
Total, other adverse events
0 / 00 / 0
serious
Total, serious adverse events
0 / 00 / 0

Outcome results

Primary

Time to Endotracheal Intubation

The amount of time it took to successfully intubate the manikin using each device.

Time frame: the same day (within seconds to minutes)

ArmMeasureGroupValue (MEAN)Dispersion
Inexperienced UsersTime to Endotracheal IntubationMiller72 secondsStandard Deviation 45
Inexperienced UsersTime to Endotracheal IntubationMacintosh72 secondsStandard Deviation 45
Inexperienced UsersTime to Endotracheal IntubationC-Mac61 secondsStandard Deviation 34
Inexperienced UsersTime to Endotracheal IntubationGlideScope118 secondsStandard Deviation 6
Experienced UsersTime to Endotracheal IntubationGlideScope85 secondsStandard Deviation 38
Experienced UsersTime to Endotracheal IntubationMiller30 secondsStandard Deviation 28
Experienced UsersTime to Endotracheal IntubationC-Mac20 secondsStandard Deviation 13
Experienced UsersTime to Endotracheal IntubationMacintosh27 secondsStandard Deviation 23
Secondary

Successful Intubation Within 120 Seconds

The number of participants who were able to successfully intubate the manikin using each device within 120 seconds.

Time frame: 2 minutes

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Inexperienced UsersSuccessful Intubation Within 120 SecondsMiller7 Participants
Inexperienced UsersSuccessful Intubation Within 120 SecondsMacintosh7 Participants
Inexperienced UsersSuccessful Intubation Within 120 SecondsC-Mac11 Participants
Inexperienced UsersSuccessful Intubation Within 120 SecondsGlideScope2 Participants
Experienced UsersSuccessful Intubation Within 120 SecondsGlideScope20 Participants
Experienced UsersSuccessful Intubation Within 120 SecondsMiller30 Participants
Experienced UsersSuccessful Intubation Within 120 SecondsC-Mac31 Participants
Experienced UsersSuccessful Intubation Within 120 SecondsMacintosh31 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026