Effectiveness of Cricoid and Paratracheal Pressures for Occluding Esophagus

Not Applicable

Completed

• Conditions: Intubation Complication
• Interventions: Other: Maneuvers for occluding esophagus

• Registration Number: NCT03992950
• Lead Sponsor: SMG-SNU Boramae Medical Center

Brief Summary

Comparing the effects of 'Cricoid pressure' or 'Paratracheal pressure' during direct laryngoscopy

Detailed Description

The effectiveness of cricoid pressure and paratracheal pressure for occluding esophagus during direct and video laryngoscopies.

Study Timeline

• Study First Submitted: 2019-06-19
• Study First Submitted QC: 2019-06-19
• Study First Posted: 2019-06-20
• Study Start: 2021-09-01
• Primary Completion: 2022-01-25
• Study Completion: 2022-01-25
• Status Verified: 2022-02
• Last Update Submitted: 2022-02-08
• Last Update Posted: 2022-02-10

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

• Who would be scheduled any surgery under general anesthesia and agree with the purpose of the study

Exclusion Criteria

• Risk of aspiration
• History of esophageal surgery
• Diseases or anatomical abnormalities of the neck, larynx, pharynx or esophagus
• Known or predicted difficult airway.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Cricoid pressure	Maneuvers for occluding esophagus	Cricoid pressure is applied in the anesthetized state and during video laryngoscopy
Paratracheal pressure	Maneuvers for occluding esophagus	Paratracheal pressure is applied in the anesthetized state and during video laryngoscopy

Primary Outcome Measures

Name	Time	Method
Occlusion of the esophagus	During 1 minute under videolaryngoscopy	Occlusion of the esophagus is checked with the application of cricoid and paratracheal pressures using esophageal stethoscope. If the esophageal stethoscope is not advanced into the esophagus, it is considered 'occlusion'.

Secondary Outcome Measures

Name	Time	Method
Position of the upper oesophagus relative to the trachea	During 1 minute after injection of anesthetics during induction of anesthesia and during videolaryngoscopy	Position of the upper oesophagus relative to the trachea trachea is evaluated.
Outer diameter of the esophagus	During 1 minute after injection of anesthetics during induction of anesthesia	Outer diameter of the esophagus is measured using ultrasound before and after the application of cricoid and paratracheal pressures.
Position of the oesophageal entrance relative to the glottis	During 1 minute after injection of anesthetics during induction of anesthesia and during videolaryngoscopy	Position of the oesophageal entrance relative to the glottis is evaluated.
The best laryngeal view	Before and after the application of cricoid and paratracheal force during videolaryngoscopy	The best laryngeal view is evaluated using the percentage of glottis opening (POGO) score, ranging from 0% to 100%.

Trial Locations

Locations (1)

Seoul Metropolitan Government Seoul National University Boramae Medical Center; 🇰🇷 Seoul, Korea, Republic of