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Leak Pressure of Uncuffed Pediatric Endotracheal Tubes

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00968058
Recruitment Status : Completed
First Posted : August 28, 2009
Last Update Posted : May 4, 2012
Information provided by (Responsible Party):
Kirk Lalwani, Oregon Health and Science University

Brief Summary:

Children and adults frequently need a 'breathing tube' when having anesthesia for surgery. The breathing tube is usually inserted after the anesthesia doctor puts a patient to sleep with medicine, so they do not feel the breathing tube. In children, there is often a leak of air between the tube and the windpipe, as the tube is not an exact fit. Anesthesia doctors usually listen for this leak around the tube by listening to the chest with a stethoscope while gently filling the lungs with oxygen from the anesthesia machine. The leak tells them if the tube is the correct size, or too small, or too tight. If it is too small, or too tight, they usually change the tube for a better fit.

The purpose of this study is to see what happens to this leak in the 30 minutes after the tube is placed. No one really knows if the leak gets bigger, smaller, or stays the same. Knowing what happens to the leak will help anesthesia doctors to decide whether to change the breathing tube or not. This is important, as a tube that is too tight can lead to breathing difficulty after removing the tube at the end of surgery, and a tube that is too small may make it difficult for the breathing machine to work effectively for the patient as a result of a large leak of air or oxygen.

Condition or disease Intervention/treatment
Intubation, Endotracheal Leak Pressure Procedure: Leak Test Recording

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Study Type : Observational
Estimated Enrollment : 40 participants
Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Temporal Variation of the Leak Pressure of Uncuffed Pediatric Endotracheal Tubes Following Intubation: A Prospective Observational Study
Study Start Date : June 2009
Actual Primary Completion Date : July 2011
Actual Study Completion Date : July 2011

Intervention Details:
  • Procedure: Leak Test Recording
    Recording of the Leak Pressure by the Leak Test at 0, 5, 10, 15, 20, 30 min timepoints

Primary Outcome Measures :
  1. Changes in leak pressure following endotracheal tube placement [ Time Frame: Thirty minutes after tube placement ]

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 7 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Pediatric patients undergoing surgical procedures at Oregon Health & Science University

Inclusion Criteria:

  • Children aged 0-7 years of age
  • Surgery with planned endotracheal intubation using an uncuffed ETT.
  • ASA 1-3
  • Supine position

Exclusion Criteria:

  • Lack of parental consent
  • Rapid sequence induction with cricoid pressure
  • Use of neuromuscular blocking agent/s for intubation.
  • Active gastroesophageal reflux disease
  • Active upper respiratory tract infection
  • Chronic active lung disease requiring frequent treatment such as asthma, or chronic lung disease of prematurity etc.
  • Surgery in the lateral or prone position
  • Oropharyngeal, neck , laryngeal, or laparoscopic surgery
  • Tracheostomy in-situ
  • History of previous laryngeal or tracheal surgery
  • History of tracheal or laryngeal abnormalities, or stridor of unknown origin.
  • History of symptomatic neuromuscular disease or paralysis
  • History or features suggestive of a difficult airway on pre-anesthetic evaluation and physical examination.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00968058

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United States, Oregon
Oregon Health & Science University
Portland, Oregon, United States, 97239
Sponsors and Collaborators
Oregon Health and Science University
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Principal Investigator: Kirk Lalwani, MD Oregon Health and Science University
Study Director: Shreya J Patel, BS University of Arizona College of Medicine
Study Director: Jeffrey Koh, MD Oregon Health and Science University
Study Director: Rochelle Fu, PhD Oregon Health and Science University

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Responsible Party: Kirk Lalwani, Associate professor Anesthesiology and Pediatrics, Oregon Health and Science University Identifier: NCT00968058     History of Changes
Other Study ID Numbers: IRB00005347
First Posted: August 28, 2009    Key Record Dates
Last Update Posted: May 4, 2012
Last Verified: May 2012
Keywords provided by Kirk Lalwani, Oregon Health and Science University:
Leak Pressure
Intubation, Endotracheal
Temporal Variation