Effectiveness of Cricoid and Paratracheal Pressures for Occluding Esophagus

SMG-SNU Boramae Medical Center40 enrolled

Overview

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

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

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

NONE

Enrollment

Conditions

Intubation Complication

Interventions

Maneuvers for occluding esophagusOTHER

Cricoid pressure: pressure on the cricoid ring Paratracheal pressure: pressure on the left paratracheal region below the cricoid level

Eligibility

Sex: ALLMin age: 19 Years

Medical Language ↔ Plain English

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.

Locations (1)

Seoul Metropolitan Government Seoul National University Boramae Medical Center

Seoul, South Korea

Outcomes

Primary Outcomes

Occlusion of the esophagus

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'.

Time frame: During 1 minute under videolaryngoscopy

Secondary Outcomes

Outer diameter of the esophagus

Outer diameter of the esophagus is measured using ultrasound before and after the application of cricoid and paratracheal pressures.

Time frame: During 1 minute after injection of anesthetics during induction of anesthesia

Position of the oesophageal entrance relative to the glottis

Position of the oesophageal entrance relative to the glottis is evaluated.

Time frame: During 1 minute after injection of anesthetics during induction of anesthesia and during videolaryngoscopy

Position of the upper oesophagus relative to the trachea

Position of the upper oesophagus relative to the trachea trachea is evaluated.

Time frame: During 1 minute after injection of anesthetics during induction of anesthesia and during videolaryngoscopy

The best laryngeal view

The best laryngeal view is evaluated using the percentage of glottis opening (POGO) score, ranging from 0% to 100%.

Time frame: Before and after the application of cricoid and paratracheal force during videolaryngoscopy

Data from ClinicalTrials.gov

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