[Comparison of safe duration of apnea and intubation time in face mask ventilation with air versus 100% oxygen during induction of general anesthesia].

ABSTRACT: OBJECTIVE:To compare the safe duration of apnea and intubation time between face mask ventilation with air and 100% oxygen during induction of general anesthesia. METHODS:Eighty adult patients with ASA class I or II without predicted difficult airways were scheduled for elective surgery under general anesthesia. The patients were randomized to receive anesthesia induction with preoxygenation [Group 1, n=40, fraction of inspired oxygen (FiO2)=1] or without preoxygenation (Group2, n=40, FiO2=0.21). Two experienced anesthesiologists performed the mask ventilation and tracheal intubation during induction, and the assistants adjusted the oxygen concentration and recorded the pulse oxygen saturation (SpO2) and other variables. The cases where SpO2 decreased to below 90% before accomplishment of

SUBMITTER: Li ZJ 

PROVIDER: S-EPMC6744021 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature