Comparison of Direct and Video Laryngoscope During Endotracheal Intubation in Sellick and Trendelenburg Position

Comparison of Direct Laryngoscope and Video Laryngoscope During Endotracheal Intubation in Sellick and Trendelenburg Position to Prevent Pulmonary Aspiration

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04457453

Enrollment

120

Registered

2020-07-07

Start date

2021-03-09

Completion date

2022-04-07

Last updated

2023-08-25

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

Conditions

Intubation;Difficult

Keywords

Trendelenburg position, Sellick position, pulmonary aspiration, video laryngoscope

Brief summary

Pulmonary aspiration during tracheal intubation for anesthesia can cause fatal respiratory complications. Takenaka's study of mannequins reported that the risk of airway contamination by reflux gastric contents could be minimized by applying a 15-degree Trendelenburg position and a Sellick position with neck extention. However, the clinical performance of tracheal intubation in this position has not been studied. Also, the difference between the effects of direct laryngoscope and video laryngoscope on tracheal intubation is not known yet. Therefore, this study aims to compare the intubation time among intubation through direct laryngoscope and video laryngoscope in the Sellick and Trendelenburg position, and intubation in the conventional sniffing position.

Interventions

OTHERMacintosh in sniffing position

Macintosh direct intubation in sniffing position

OTHERMacintosh in Trendelenburg position and Sellick position

Macintosh direct laryngoscopic intubation in Trendelenburg position and Sellick position

OTHERAceScope in Trendelenburg position and Sellick position

AceScope videolaryngoscopic intubation in Trendelenburg position and Sellick position

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

OTHER

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

19 Years to 70 Years

Healthy volunteers

Inclusion criteria

* Age \>= 19 years old * ASA I or II * Patients who need nasotracheal intubation for surgery

Exclusion criteria

* Anatomical deformity in head and neck * Patients who have risk of pulmonary aspiration * Patients with cervical deformities or pain * BMI \>35

Design outcomes

Primary

Measure	Time frame	Description
Intubation time	within 5 minutes	from endotracheal tube pass the teeth to end-tidal CO2 appear

Secondary

Measure	Time frame	Description
Intubation difficulty score	within 5 minutes	Intubation difficulty scale (IDS) score

Countries

South Korea

Outcome results

None listed

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