90
Participants
Start Date
August 1, 2017
Primary Completion Date
December 30, 2017
Study Completion Date
December 30, 2017
100% Oxygen
Conventional preoxygenation with 100% oxygen
30% Oxygen
preoxygenation with 30% oxygen
21% Oxygen
preoxygenation with 21% oxygen
40% Oxygen
preoxygenation with 40% oxygen
60% Oxygen
preoxygenation with 60% oxygen
80% Oxygen
preoxygenation with 80% oxygen
Department of Anesthesia ,the Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou
Sixth Affiliated Hospital, Sun Yat-sen University
OTHER