An interventional study of Neutral position and Head extension position in Adult Patients Over 20 Years of Age Who Require Intubation of the Nasotracheal Tube to Undergo Oral and Maxillofacial Surgery Under General Anesthesia, sponsored by Yonsei University. Status unknown at 1 site in Korea, Republic of. Open to participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2020-09-23.
Sponsored by Yonsei University · Not applicable, Interventional, and Diagnostic
Nasotracheal tube is a commonly used for securing airways when performing general anesthesia in various oral and maxillofacial surgery such as tooth extraction, maxillary and mandibular fractures. After the nasotracheal tube is placed in the patient's trachea, the process of inflating the cuff at the end of the tube with air is required. If the cuff is inflated with excess air, the cuff may press the mucous membrane on the inner wall of the trachea, causing ischemia. Previous studies have shown that if the pressure in the cuff exceeds 30 cmH2O, it is highly likely to cause ischemia. In addition, it was found that the pressure in the excessively inflated cuff was associated with post-operative sore throat, vocal cord paralysis, and nerve damage. Moreover, the pressure in the cuff may vary according to the patient's head and neck posture. The pressure changes in the cuff may vary depending on the material and shape of the cuff. Therefore, we will investigate to evaluate the effect of head and neck posture on the pressure in the cuff of nasotracheal tube.
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General anesthesia will be induced and nasotracheal tube will be placed through the patient's nose. After 30 seconds, the cuff pressure will be measured using a cuff manometer. Inspiratory tidal volume, expiratory tidal volume, peak inspiratory pressure, and end-tidal carbon dioxide waveform will be recorded three times according to breathing. Whether ventilation is not adequate and air is leaking will be recorded.
Procedure: Neutral position
After changing the posture of the head and neck into head extension, cuff pressure will be recorded.
Procedure: Head extension position
After changing the posture of the head and neck into head flexion, cuff pressure will be recorded.
Procedure: Head flexion position
After changing the posture of the head and neck into head rotation, cuff pressure will be recorded.
Procedure: Head rotation position
The cuff pressure will be recorded at the neutral head position.
The cuff pressure will be recorded at the head extension position.
The cuff pressure will be recorded at the head flexion position.
The cuff pressure will be recorded at the head rotation position.
cuff pressure of the nasotracheal tube
Cuff pressure will be measured in the various head and neck positions.
Time frame: for 10 minutes after intubating the nasotracheal tube. At Day 0.
Plan to share: No
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This study is status unknown, as verified in Sep 2020. You cannot join it, but the record below documents what was studied.
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Yonsei University