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Prediction of Optimal Pediatric Endotracheal Tube Size "Aged Based Formula Versus Ultrasonography"

NCT03676387 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 54

Last updated 2018-09-18

No results posted yet for this study

Summary

Background: Ultrasound (US) imaging technique has recently emerged as a novel, simple, portable, noninvasive tool helpful for airway assessment and management. Initial few published reports were on soft tissue imaging of neck, focusing on pre-tracheal structure and anterior tracheal wall. In our study, we compared the measurement of subglottic diameter using ultrasonography and the aged based formula in prediction of endotracheal tube size in children underwent elective surgical operation under general anesthesia.

Methods: Patients were randomly divided in 2 groups (27 patients each) using a computer-generated randomization schedule. The first group was aged based group (group AB) (n = 27): the endotracheal tube size was determined according to age of the child \[inner diameter \[ID\] in mm = (age in yr/4) +4. The second group was ultrasound based group (group UB) (n = 27): the endotracheal tube size was determined according to the subglottic transverse diameter that was estimated with ultrasonography (the outer diameter of endotracheal tube (ETT OD) = 0.55\*(subglottic diameter)+1.16) .

Conditions

  • Anesthesia Intubation Complication

Interventions

OTHER

ultrasound guided

Ultrasonography technique: The subglottic diameter was estimated with B-mode ultrasonography (Korean, Siemens, Acuson, x300) with a 10-13-MHz linear probe positioned on the midline of the anterior neck (figure1). The evaluation began by identifying the true vocal folds as paired hyperechoic linear structures that moved with respiration and swallowing before patients were paralyzed. The probe was then moved caudally to visualize the cricoid arch which appears as an arched, rounded and hypoechoic structure (figure2). The transverse air-column diameter was measured at the lower edge of the cricoid cartilage after patients were paralyzed (figure3). The measurements of the subglottic diameter was used to select the outer diameter of endotracheal tube by the equation \[ETT OD=0.55\*(subglottic diameter)+1.16\] (Shibasaki et al., 2010), since the outer diameter of endotracheal tube differs among different manufactures, we used uncuffed Mallinckrodt tracheal tube with a Murphy's eyes.

Sponsors & Collaborators

  • Mansoura University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
1 Year
Max Age
6 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2016-04-01
Primary Completion
2017-04-16
Completion
2017-04-16

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03676387 on ClinicalTrials.gov