Ultrasound vs. Auscultation for Optimal Depth of the Cuffless RAE Tube

Seoul National University Hospital

Overview

The aim of this study is to compare the ultrasound-guidance versus auscultation to confirm optimal insertion depth of the cuffless oral Ring-Adair-Elwyn (RAE) endotracheal tube in pediatric patients undergoing general anesthesia.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

DOUBLE

Conditions

Intubation Complication Child Ultrasonography

Interventions

Ultrasound-guided determination of cuffless RAE tube depthBEHAVIORAL

1. Measurement of "Carina-T2 mid-vertebra length" from preoperative Cheat PA 2. Ultrasound-guided detection of endobronchial intubation depth by loss of lung sliding sign in the left lung field. 3. Withdrawal of the cuffless RAE tube using the "Carina-T2 mid-vertebra length" for optimal positioning

Auscultation-guided determination of cuffless RAE tube depthBEHAVIORAL

1. Measurement of "Carina-T2 mid-vertebra length" from preoperative Cheat PA 2. Auscultation-guided detection of endobronchial intubation depth by loss of breathing sound in the left lung field 3. Withdrawal of the cuffless RAE tube using the "Carina-T2 mid-vertebra length" for optimal positioning

Eligibility

Sex: ALLMax age: 7 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Children age under 7 years * Undergoing general anesthesia * Endobronchial intubation with cuffless oral RAE tube Exclusion Criteria: * Pulmonary disease * Active upper respiratory tract infection * History of upper or lower respiratory tract infection within 2 weeks * Emergent operation * Unstable vital sign

Locations (1)

Hee-Soo Kim

Seoul, Soul-t'ukpyolsi, South Korea

Outcomes

Primary Outcomes

The proportion of optimal location of the cuffless Oral RAE tube (%)

The distance between the tip of cuffless RAE tube and right pulmonary artery is within the -5mm \~ +5mm value of the distance between the T2 mid-vertebra and carina (optimal depth)

Time frame: during operation (until endotracheal extubation) up to 18 hour after induction

Secondary Outcomes

M-distance (between the carina and the T2 mid-vertebra)

The distance between T2 mid-vertebra and the carina)

Time frame: during operation up to 18 hour after induction

Distance between the optimal depth and the relocated depth

Time frame: during operation up to 18 hour after induction

Subglottic diameter at the cricoid cartilage level

Subglottic diameter at the cricoid cartilage level using neck US

Time frame: during operation

ID and OD of optimal cuffless oral RAE tube

Internal and external diameter of optimal cuffless oral RAE tube

Time frame: during operation up to 18 hour after induction

Time from intubation to confirming the tube depth

Time from intubation to confirming the tube depth (seconds)

Time frame: during operation up to 18 hour after induction

Distance between the optimal depth and the manufacturer's recommended depth

Data from ClinicalTrials.gov

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