Distance From the Glottis to the Grille in Children

Not Applicable

Completed

• Conditions: General Anesthesia
• Interventions: Procedure: fiberoptic bronchoscope

• Registration Number: NCT03156166
• Lead Sponsor: Seoul National University Hospital

Brief Summary

Ambu AuraGain, I-gel, Air-Q intubating laryngeal airway are the most commonly used supraglottic airway. In children, they can be used as intubation conduits. However, there has been no guideline for optimal insertion depth of endotracheal tube through those supraglottic airway. In this study, the investigators will measure the distance from grille of those supraglottic airways to glottis using fiberoptic bronchoscope in children undergoing anesthesia. This distance allows us to predict an appropriate depth of endotracheal tube when it should be inserted through each supraglottic airway.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-05-15
• Study First Submitted QC: 2017-05-15
• Study First Posted: 2017-05-17
• Study Start: 2017-06-12
• Primary Completion: 2018-05-30
• Study Completion: 2018-05-30
• Status Verified: 2018-07
• Last Update Submitted: 2018-07-16
• Last Update Posted: 2018-07-17

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 89

Inclusion Criteria

• children < 7 years old undergoing elective surgery

Exclusion Criteria

• difficult airway
• BMI> 30kg/m2
• emergency operation
• cervical spine disease
• history of esophageal disease and surgery

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Air-Q intubating laryngeal airway (ILA)	fiberoptic bronchoscope	Air-Q ILA is inserted in children undergoing general anesthesia. The size of Air-Q ILA is as follows: size 1 for children between 4-7 kg, size 1.5 for 7-17kg, size 2 for 17-30kg, size 2.5 for 30-50kg. Fiberoptic bronchoscope will be performed to measure the distance between the grill and vocal cord.
Ambu AuraGain	fiberoptic bronchoscope	Ambu AuraGain is inserted in children undergoing general anesthesia. The size of AuraGain is as follows: size 1 for children \<5 kg, size 1.5 for 5-10kg, size 2 for 10-20kg, size 2.5 for 20-30kg. Fiberoptic bronchoscope will be performed to measure the distance between the grill and vocal cord.
I-gel	fiberoptic bronchoscope	I-gel is inserted in children undergoing general anesthesia. The size of I-gel is as follows: size 1 for children weighing 2-5kg, size 1.5 for 5-12kg, size 2 for 10-25kg, size 2.5 for 25-35kg. Fiberoptic bronchoscope will be performed to measure the distance between the grill and vocal cord.

Primary Outcome Measures

Name	Time	Method
The distance from grille to glottis	30 seconds after each supraglottic airway insertion	The distance from grille to glottis is measured using fiberoptic bronchoscopy

Secondary Outcome Measures

Name	Time	Method
Ventilation score	30 seconds after each supraglottic airway insertion	no air leak in airway pressure of 15 cmH2O / bilateral chest wall movement/ normal waveform of capnography
FOB view	30 seconds after each supraglottic airway insertion	score 1: no visible glottis, score 2: visible glottis and anterior epiglottis, score 3: visible glottis and posterior epiglottis, and score 4: only glottis visible

Trial Locations

Locations (1)

Seoul National University Hospital; 🇰🇷 Seoul, Korea, Republic of