Ultrasonography vs Cole Formula to Predict Endotracheal Tube Diameter

March 1, 2017 updated by: Dr. dr. Aida Rosita Tantri SpAn-KA, Indonesia University

Comparison Between Ultrasonography and Cole Formula in Predicting Uncuffed Endotracheal Tube Diameter

This study aims to compare the accuracy of measurement between ultrasonography and Cole formula in predicting uncuffed endotracheal tube diameter.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Approval from Ethical Committee of Faculty of Medicine Universitas Indonesia was acquired prior conducting the study. Subjects were given informed consent before enrolling the study. Non-invasive blood pressure (NIBP) monitor, ECG and pulse-oximeter was set on the subjects in the operation room. The uncuffed endotracheal tube (ETT) diameter predictions were measured firstly using ultrasonography (USG), then with Cole formula. After that, polyvinyl chloride (Mallinckrodt) ETT intubation with Cole diameter measurement was inserted using direct laryngoscopy. If the ETT was too small, use a 0.5 mm bigger ETT than the prediction diameter, if it too big, use a 0.5 mm smaller ETT than the prediction diameter. Reintubation and measurements using both methods were recorded. If bradycardia or desaturation happened, positive pressure ventilation, 100% oxygen, atropine 0,01-0,02 mg/kg, adrenaline 0,01 mg/kg could be given. Data was analyzed using SPSS using Bivariat Chi-square test or Fisher Exact Test (categorical comparative analytical study).

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Indonesia
    • DKI Jakarta
      • Jakarta, DKI Jakarta, Indonesia, 10430
        • Cipto Mangunkusumo Cental National Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

1 year to 6 years (CHILD)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Subjects aged 1-6 years old, Malayan race, planned to undergo elective surgery with general anesthesia with intubation
  • Subjects with ASA status I-II
  • Cooperative subjects
  • Subjects whose parents had signed the informed consent

Exclusion Criteria:

  • Subjects with allergies to Ultrasonography jelly
  • Subjects with difficult airway
  • Subjects with mass in the neck area
  • Subjects with respiratory diseases
  • Subjects with growth & development disorders
  • Subjects with malnutrition (<5% percentile) and obesity (>95% percentile).

Drop out criteria:

  • Subjects with cardiorespiratory disorder during intubation
  • Subjects who were failed to be intubated twice.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: SUPPORTIVE_CARE
  • Allocation: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Subjects
USG was used to measure the internal transversal subglottic diameter on the crichoid cartilago level while the head was in sniffing position. After USG measurement was recorded, Cole formula was used to measure internal diameter of uncuffed endotracheal tube.
Device: USG
USG used was SonoSite® M-Turbo Bothell, WA, USA, probe linear (Array HFL 38 frekuensi 6-13 MHz). Internal subglottic diameter equals external diameter of the uncuffed endotracheal tube or trachea diameter, result rounded to the smallest uncuffed endotracheal tube size.
Other: Cole Formula
Internal diameter of the uncuffed endotracheal tube equals (age in years/4) + 4mm.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
The accuracy proportion of USG and Cole Formula
Time Frame: 3 months
Whether the USG measurement and Cole Formula measurement accurate or not will be recorded.
3 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Indonesia University

Investigators

  • Principal Investigator: Aida R Tantri, Consultant, Indonesia University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

May 1, 2016

Primary Completion (ACTUAL)

July 1, 2016

Study Completion (ACTUAL)

July 1, 2016

Study Registration Dates

First Submitted

April 26, 2016

First Submitted That Met QC Criteria

April 27, 2016

First Posted (ESTIMATE)

April 28, 2016

Study Record Updates

Last Update Posted (ACTUAL)

March 3, 2017

Last Update Submitted That Met QC Criteria

March 1, 2017

Last Verified

March 1, 2017

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • IndonesiaUAnes006

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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