None
Conditions
Interventions
N group:Fresh oxygen flow rate was 12L/min, and the patient was ventilate with tidal volume, breathing peacefully for 3 minutes, and anesthesia induction began. After the patient lost spontaneous brea
P group:Fresh oxygen flow rate was 12L/min, and the patient was ventilate with tidal volume, breathing peacefully for 3 minutes.
Sponsors
Yongping County People's Hospital
Eligibility
Sex/Gender
All
Age
18 Years to 50 Years
Inclusion criteria
Inclusion criteria: Patients aged 18-50years, ASA: Class I-ll, BMI 18-28kg/m2, who have been living in the local subhighland area (2000m above sea level) and are proposing elective surgery under general anesthesia.
Exclusion criteria
Exclusion criteria: Mallampati's grading or facial structure suggests possible difficulty with airway, have a history of difficult tracheal intubation in the past; The hemoglobin of men and women with different degrees of anemia was less than 120g/L and 110g/L respectively; Combined with cardiopulmonary disease.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Safe Apnea Time; | — |
Secondary
| Measure | Time frame |
|---|---|
| PetCO2MAX;mean arterial pressure;PaO2;heart rate;SPO2;PaCO2; | — |
Countries
China
Contacts
Public ContactLiu huixing
Yongping County People's Hospital
Outcome results
None listed