Perioperative preoxygenation Oxygen Reserve Index apnea time hyperoxia hypoxemia
Conditions
Interventions
Giving 60% oxygen during preoxygenation and bag mask ventilation ,Giving 100% oxygen during preoxygenation and bag mask ventilation
Experimental Drug,Active Comparator Drug
Low FiO2,Standard FiO2
Sponsors
Ratchadapisek Research Funds
Eligibility
Sex/Gender
Male
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. Adult patient age 18-80 years old scheduled for elective non-cardiac surgery under general anesthesia with endotracheal tube- 2. ASA physical status I - III 3. BMI between 18-30 kg/sq.m
Exclusion criteria
Exclusion criteria: 1. Not giving consent 2. History of difficult intubation or anticipated difficult intubation 3. Indicated for rapid sequence induction or awake intubation 4. Hemoglobin concentration less than 10 g/dL 5. Presence of factors confounding co-oximetry such as hemoglobinopathies 6. CNS disorders 7. Pregnancy 8. Patients with limited cardiopulmonary reserve including severe cardio/pulmonary diseases, obstructive sleep apnea, or resting oxygen saturation less than 95% 9. Oxygen saturation after preoxygenation less than 100%
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Safe apneic time When SpO2 reaches 94% Stop watch | — |
Secondary
| Measure | Time frame |
|---|---|
| Added warning time When SpO2 reaches 94% Stop watch,Incidence of hyperoxia Induction phase of anesthesia Couting incidence or ORi more than 0.55 | — |
Countries
Thailand
Contacts
Public ContactPongpol Sirilaksanamanon
King Chulalongkorn Memorial Hospital
Outcome results
None listed