Completed

NCT Number: NCT06937840

Comparison of Optimal Endotracheal Tube Depth Using Four Different Formulas in Children Aged 1-4 Years and Verification With Fiberoptic Bronchoscopy

. The optimal position of the endotracheal tube (ETT) within the trachea is the middle third portion, distal to the vocal cords. In addition to clinical assessments, methods such as posteroanterior chest radiography (PA-CXR) and fiberoptic bronchoscopy (FOB) can be used to verify ETT placement.

In our study, we aim to explain the relationship between the most accurate endotracheal tube depth and various formulas by using fiberoptic bronchoscopy, with the help of four different formulas based on age, height, weight, and third finger length.The study further seeks to:

1. To identify the most accurate formula for estimating ETT placement depth in the pediatric population living in Turkey. 2. To reduce the potential complications that may arise from incorrect ETT depth. 3. To determine which formula, when verified by fiberoptic bronchoscopy, is also consistent with auscultation findings-especially in situations where chest radiography or fiberoptic bronchoscopy may not be readily available.

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Key information

Conditions

Pediatric Surgical Procedures Requiring Endotracheal Intubation Under General Anesthesia

Age range

1 year–4 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Ankara University School Of Medicine

Ankara, 06100, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

American Society of Anesthesiologists (ASA) physical status 1 , 2 or 3
Patients scheduled for elective surgical procedures
Informed consent must be obtained from both the patient and, if applicable, their parent or guardian.

Exclusion criteria

Patients under 1 year old or over 4 years old
Patients with tracheobronchial anomalies
Patients with vertebral column anomalies
Patients with a history of tracheostomy and difficult intubation
Patients who do not want to be included in the study
Children with finger anomalies and syndromic associations
Cases requiring nasal intubation

Treatment and study plan

Primary outcomes

To determine the correct depth of endotracheal tube insertion

Time frame: only once

This study aims to identify the optimal endotracheal tube insertion depth in pediatric patients by evaluating tracheal dimensions using fiberoptic bronchoscopy.
A comparative analysis of four formulas used to determine endotracheal tube positioning

Time frame: only once

This study aims to identify the most accurate formula for estimating the ideal endotracheal tube depth among those based on age, weight, height, and middle finger length."

Sponsors and collaborators

Lead sponsor

Ankara University

Other

Registry information

Official study title

Comparison of Optimal Endotracheal Tube Depth Using Four Different Formulas (Based on Age, Height, Weight, and Third Finger Length) in Children Aged 1-4 Years and Verification With Fiberoptic Bronchoscopy

Important dates

Study start: 2023
Primary completion: 2024
Study completion: 2024
First posted: Apr 22, 2025
Registry last updated: Apr 25, 2025

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.