The Changes of ETT Cuff Pressures After Head and Neck Positions Placed for Adenotonsillectomy and Tonsillectomy in Children

Study Overview
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Brief Summary
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The main purpose of this study was to assess the effect of each of position (neck extension by under-shoulder pillow and Crowe-Davis retractor use) during adenoidectomy and adenotonsillectomy on the intracuff pressure of ETTs in children.

Detailed Description
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The cuff of the endotracheal tube seals the extraluminal airway to facilitate positive-pressure ventilation and reduce subglottic secretion aspiration. As increase or decrease of ETT intracuff pressures can lead to many morbidities. A total of 140 patients younger than 18 years, who were scheduled for elective adenoidectomy or adenotonsillectomy operation, were included in the study . A standardized general anesthetic was given and cuffed endotracheal tubes by the assistance of video laryngoscope were placed in all patients. The pilot balloon of each endotracheal tube was connected to the pressure transducer and standard invasive pressure monitoring was set to measure intracuff pressure values continuously. The first intracuff pressure value was adjusted to 18.4mmHg (25cm H2O) at supine and neutral neck position. The patients then were given appropriate position for the surgery. These positions were neck extension and placement of mouth gag These positions were neutral position, extension by under-shoulder pillow and placement of the mouth gag. The intracuff pressures were measured and noted after each position, at every 5th minute while the operation and before the extubating. If intracuff pressure deviated from the targeted value of 20-30cm H2O at any time, it was set to 25cm H2O again.

Official Title
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The Changes of Endotracheal Tube Cuff Pressures While Positioning for Adenotonsillectomy or Tonsillectomy Surgery in Children: A Prospective Observational Study

Conditions
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Endotracheal Tube Cuff Pressure, Adenotonsillectomy, Tonsillectomy, Position

Intervention / Treatment
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* Other: Intracuff pressure measurement


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Younger than 18 years American Society of Anesthesiologists (ASA) physical status I- II Elective tonsillectomy/ adenotonsillectomy under general anesthesia Exclusion Criteria: Older than 18 years American Society of Anesthesiologists (ASA) physical status |>II Nasotracheal intubation Peroperative tracheotomy requirements Respiratory tract infection.

Ages Eligible for Study
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Minimum Age: 0 Years
Maximum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Study Group<br>Patients younger than 18 years, who were scheduled for elective adenoidectomy or adenotonsillectomy operation. | Other: Intracuff pressure measurement<br>* The intracuff pressures were measured and noted after each position (neck extension and placement of mouth gag), at every 5th minute while the operation and before the extubating.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intracuff Pressure | Endotracheal Tube Cuff Pressures in Adenotonsillectomy or Tonsillectomy Surgery Positions in Children | 0th minute (just after the positioning from neutral to surgical position) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intracuff Pressure | Endotracheal Tube Cuff Pressure at every 5th minute while the operation and before the extubating | From the beginning to the end of the operation before extubation | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Pediatric Surgery, Endotracheal Tube Cuff Pressure, Adenotonsillectomy, Tonsillectomy, Position