The Use of a US-measured Styloid Process of the Distal Radius EET Diameter for Prediction of ETT Size

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-01-10

Study Completion Date

2026-01-30

Brief Summary

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This study will aim to test the accuracy of the ultrasonography measurement of the epiphyseal diameter of the distal radius in the prediction of the size of the cuffed and uncuffed ETT that best fits in children (1-6 years old) in comparison with the traditional age-based formulas.

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Detailed Description

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Various formulas are used to predict the inner diameter (ID) of the ETT tube whether uncuffed or cuffed based on weight, age, height, and finger size. The accuracy of these formulas is questionable. These formulas depend on the child's demographic characteristics assuming that he/she has normal growth and development and cannot be applied to children with altered growth and development. Moreover, these formulas predict the ID of the ETT ignoring the tube thickness and the OD of the selected tube.

ultrasound has recently been identified as an accurate alternative to these formulas. The US-measured epiphyseal diameter of the distal radius is a method that has been recently introduced as a surrogate for the tracheal diameter. The issue is that the size of the airway can be considered a reflection of the body's growth, assuming that the growth rates of the cartilage all over the body are closely related to each other. Therefore, the measurement of the growth of the bony cartilage of the hand can be considered a surrogate marker of the tracheal diameter.9 The extent to which ultrasonography by this method can succeed in predicting the optimal pediatric ETT size remains under investigation.

Conditions

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Airway Management

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Cuffed Endotracheal tube.

Patients will be intubated using a high-volume low-pressure cuffed ETT with its OD determined by US measurement of the epiphyseal diameter of the distal radius.

Cuffed endotracheal tube

Intervention Type DEVICE

Patients will be intubated using a cuffed ETT with its OD determined by US measurement of the epiphyseal diameter of the distal radius.

Uncuffed Endotracheal tube.

Patients will be intubated using an uncuffed ETT with its OD determined by US measurement of the epiphyseal diameter of the distal radius.

UnCuffed ETT

Intervention Type DEVICE

Patients will be intubated using an uncuffed ETT (Flexicare-UK) with its OD determined by US measurement of the epiphyseal diameter of the distal radius.

Interventions

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Cuffed endotracheal tube

Patients will be intubated using a cuffed ETT with its OD determined by US measurement of the epiphyseal diameter of the distal radius.

Intervention Type DEVICE

UnCuffed ETT

Patients will be intubated using an uncuffed ETT (Flexicare-UK) with its OD determined by US measurement of the epiphyseal diameter of the distal radius.

Intervention Type DEVICE

Other Intervention Names

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Cuffed ETT Patients will be intubated using an uncuffed ETT with its OD determined by US measurement of the epiphyseal diameter of the distal radius.

Eligibility Criteria

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Inclusion Criteria

* Weight: 10-30 kg.
* Age: 1-6 years.
* Sex: both males and females.
* ASA physical status: I-II.
* Operation: elective surgery in which airway management with an endotracheal tube is needed.

Exclusion Criteria

* Upper airway malformations.
* Upper airway surgery.
* Active respiratory illness (cough, fever, rhinorrhea) on the day of anesthesia,
* Anticipated difficult airway.

Minimum Eligible Age

1 Year

Maximum Eligible Age

6 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No