The study assumed that supraglottic jet ventilation is an alternative solution as a safe way to do the preoxygenation before endotracheal intubation by contrasting it with mask pressurized ventilation. The investigators also expected that supraglottic jet ventilation won't increase the occurrence of esophageal reflux.
The study assumed that supraglottic jet ventilation is an alternative solution as a safe way to do the preoxygenation before endotracheal intubation by contrasting it with mask pressurized ventilation. The investigators also expected that supraglottic jet ventilation won't increase the occurrence of esophageal reflux. The investigators randomly divided the patients into 2 groups:Group C and Group S.Patients in Group C will be preoxygenation with mask pressurized ventilation while patients in Group S with supraglottic jet ventilation by Wei NASAL JET(WNJ).The tracheal intubation will be done after the 3 minutes preoxygenation. The investigators will measure the PaCO2 before and after preoxygenation, and the investigators will take the stomach-ultrasonography to find if there are too much gas in the gastro. If pulse oximetry is lower than 95% during the preoxygenation, the investigators will adjust the position of the Wei NASAL JET(WNJ) or use the change the way that the investigators hold the mask or change the pressure of ventilation on the basis of the group.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
68
patients who were randomized into supraglottic jet ventilation group would be placed Wei Nasal Jet Tube after conducted. Then they will get the supraglottic jet ventilation to make sure their pulse oximetry is over 95%. After 3 minutes, endotracheal intubation was performed via mouth approach.
Peking University People's Hospital
Beijing, Beijing Municipality, China
RECRUITINGalveolar oxygen tension(PaO2)
The results comes from blood gas analysis
Time frame: 3 minutes after preoxygenation
alveolar oxygen tension(PaO2)
The results comes from blood gas analysis
Time frame: baseline (before preoxygenation)
PaCO2
The results comes from blood gas analysis
Time frame: 3 minutes after preoxygenation
PaCO2
The results comes from blood gas analysis
Time frame: baseline (before preoxygenation)
gastric antrum cross section
The results comes from the ultrasound of gastric
Time frame: 3 minutes after preoxygenation
gastric antrum cross section
The results comes from the ultrasound of gastric
Time frame: baseline (before preoxygenation)
complications
such as nasal bleeding, dry throat itching, sore throat, nausea and vomiting, pressure and other adverse reactions
Time frame: 1 day
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