150
Participants
Start Date
January 8, 2021
Primary Completion Date
November 4, 2022
Study Completion Date
November 4, 2022
nasotracheal tube (Ring-Adair-Elwin)
different materials for nasotracheal intubation conventional PVC tube
nasotracheal tube (Ring-Adair-Elwin)
different materials for nasotracheal intubation conventional PVC tube with rubber suction catheter
nasotracheal tube (portex)
different materials for nasotracheal intubation velvet soft PVC tube.
Gangnam Severance Hospital, Seoul
Gangnam Severance Hospital
OTHER