Effectiveness of Cricoid Pressure During Videolaryngoscopy Versus Direct Laryngoscopy

Comparison of the Effectiveness of Cricoid Pressure on Upper Esophageal Obstruction During Videolaryngoscopy Versus Direct Laryngoscopy: a Randomized, Crossover Study

Status

Not yet recruiting

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT06441175

Enrollment

140

Registered

2024-06-04

Start date

2024-07-01

Completion date

2026-07-01

Last updated

2024-06-04

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

Conditions

Cricoid Pressure

Brief summary

Compare the success rate of upper esophageal obstruction with cricoid pressure during videolaryngoscopy and direct laryngoscopy.

Detailed description

Even with appropriate cricoid pressure, the lifting force of the laryngoscope during direct laryngoscopy for tracheal intubation may counteract the cricoid pressure, making esophageal obstruction ineffective. Compared to direct laryngoscopy, videolaryngoscopy requires less lifting force, and thus, the success rate of esophageal obstruction may be higher. This study aims to compare the success rate of upper esophageal obstruction with cricoid pressure during videolaryngoscopy and direct laryngoscopy.

Interventions

OTHERIntubation device order

D-V group: the group that performs direct laryngoscopy first and then videolaryngoscopy. V-D group: the group that performs video laryngoscopy first and then directlaryngoscopy.

Study design

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

OTHER

Masking

DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Adult patients scheduled to have general anesthesia with tracheal intubation

Exclusion criteria

* Gastroesophageal reflux disease, achalasia, bowel obstruction, * BMI \> 35 kg/m2 * Uncontrolled diabetes * Pregnancy * Previous esophageal, and gastric surgery * Dental damage or anticipated difficult airways * Who do not consent to the study

Design outcomes

Primary

Measure	Time frame	Description
Success rate of esophageal obstruction during cricoid pressure	During general anesthesia induction	Success rate of esophageal obstruction during cricoid pressure

Secondary

Measure	Time frame	Description
Esophageal diameter	During cricoid pressure	Esophageal diameter measured by ultrasound
percentage of glottic opening score	During cricoid pressure	percentage of glottic opening
Cormack-Lehane grade	During cricoid pressure	views obtained by laryngoscopy

Contacts

Primary ContactTAE KYONG KIM

ktkktk@gmail.com82-2-870-2519

Outcome results

None listed

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