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Completed

NCT Number: NCT03992950

Effectiveness of Cricoid and Paratracheal Pressures for Occluding Esophagus

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

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Key information

Conditions

Intubation Complication

Age range

19 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Seoul Metropolitan Government Seoul National University Boramae Medical Center

Seoul, 156-707, South Korea

About this study

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

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Maneuvers for occluding esophagus

Other

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

Primary outcomes

  1. Occlusion of the esophagus

    Time frame: 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 outcomes

  1. Outer diameter of the esophagus

    Time frame: 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.

  2. Position of the oesophageal entrance relative to the glottis

    Time frame: 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.

  3. Position of the upper oesophagus relative to the trachea

    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 trachea is evaluated.

  4. The best laryngeal view

    Time frame: 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%.

Sponsors and collaborators

Lead sponsor

SMG-SNU Boramae Medical Center

Other

Registry information

Official study title

Effectiveness of Cricoid and Paratracheal Pressures for Occluding Esophagus in Anesthetized and Paralyzed Patients During the Induction of Anesthesia

Important dates

Study start
2021
Primary completion
2022
Study completion
2022
First posted
Jun 20, 2019
Registry last updated
Feb 10, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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