Effectiveness of Ultrasonography and The Cole Formula on the Evaluation of the Appropriate Endotracheal Tube Size

Study Overview
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Brief Summary
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In this study the effectiveness of the use of Cole formula and USG were compared in determining the number of the appropriate uncuffed ETT to be used for clinically adequate ventilation.

Detailed Description
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Aim: The goal of this study was to evaluate the effectiveness of the Cole formula and ultrasonography in determining endotracheal tube size for paediatric surgery patients. Material and methods: ASA I-II pediatric patients (n=110) in the age range of 2-10 years, planned to undergo elective surgeries under general anesthesia with endotracheal entubation, were enrolled in this study. Once patients were properly positioned after premedication and anesthesia induction, the subglottic diameter was measured using ultrasonography, and endotracheal tube (ETT) size was also calculated with the Cole formula. Subsequently patients were entubated with uncuffed ETT with sizes based on the patient's age in compliance with current clinical guide lines. To ensure adequate ventilation, the tube was replaced with an ETT of larger or smaller diameter as needed. The ETT was fastened after the placement ring had passed through the vocal cords and breath sounds were confirmed to be equal by auscultation. The size of the used ETT was compared with the size estimated from the subglottic diameter measured by ultrasonography to the size calculated with the Cole formula

Official Title
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Effectiveness of Ultrasonography and The Cole Formula on the Evaluation of the Appropriate Endotracheal Tube Size

Conditions
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Intubation

Intervention / Treatment
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* Procedure: Intubation


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria:Children between 2 and 10 years of age, in the ASA I-II classification for whom elective surgery - Exclusion Criteria: Children having a diagnosed syndrome, any anomaly of the upper respiratory tract and the head-neck region, recent or active upper respiratory tract infection, previous tracheastomy, requiring nasotracheal entubation, requiring surgery on an emergency basis and being in the ASA III-IV classification -

Ages Eligible for Study
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Minimum Age: 2 Years
Maximum Age: 10 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Intubation with Cole formula<br>ASA I-II pediatric patients in the age range of 2-10 years, planned to undergo elective surgeries under general anesthesia with endotracheal entubation, | Procedure: Intubation<br>* elective surgeries under general anesthesia with endotracheal entubation formula or USG asisted<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| : The goal of this study was to evaluate the effectiveness of the Cole formula and ultrasonography in determining endotracheal tube size for paediatric surgery patients. | efficiency of formula | 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| To determine the correlation of weight, height and age of child with USG based endotracheal tube size, Cole formula endotracheal tube size and clinically used endotracheal tube size | efficiency of USG | 12 months |