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

Istanbul University

Status: Completed

Conditions: Intubation

Treatments: Procedure: Intubation

Study type: Interventional

Funder types: Other

Identifiers

NCT03280498

83045809

Details and patient eligibility

About

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.

Full description

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

Enrollment: 110 patients

Sex: All

Ages: 2 to 10 years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

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 -

Trial design

Primary purpose: Diagnostic

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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110 participants in 1 patient group

Intubation with Cole formula

Other group

Description:

ASA I-II pediatric patients in the age range of 2-10 years, planned to undergo elective surgeries under general anesthesia with endotracheal entubation,

Treatment:

Procedure: Intubation