Hypoxemia during anesthesia induction, perioperative atelectasis
Conditions
Interventions
experimental group:After pre-oxygenation with HFNC, chin support is provided, and while assisted ventilation is discontinued, high?flow oxygen is continued via HFNC at flow rates set according to unif
control group:After pre-oxygenation, only chin support is provided (to maintain airway patency), the mask is removed, and oxygen supply is stopped.
Sponsors
Shenzhen Children's Hospital
Eligibility
Sex/Gender
All
Age
3 Years to 6 Years
Inclusion criteria
Inclusion criteria: 1. Aged 3–6 years, with preoperative SpO2 >=98%; 2. Scheduled for surgery under general anesthesia with endotracheal intubation or laryngeal mask airway; 3. ASA physical status I or II; 4. Children who have completed unified fasting for 8 hours and abstained from liquids for 2 hours preoperatively, meeting the standard preoperative fasting guidelines for anesthesia; 5. Written informed consent has been signed by the parent or legal guardian, agreeing to the child’s participation in this study.
Exclusion criteria
Exclusion criteria: 1. Presence of circulatory system disease with hemodynamic instability; 2. Congenital airway malformation, history of difficult airway, or complete upper airway obstruction; 3. Presence of nasal bone or skull base fracture; 4. Received any treatment or intervention that may affect airway management prior to the trial; 5. Known allergy to the equipment or materials used in the trial; 6. Recent (<2 weeks) confirmed or suspected upper respiratory tract infection; 7. Abnormal nasal structure preventing effective placement of high-flow nasal cannula (HFNC).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| non-hypoxic apnea time; | — |
Secondary
| Measure | Time frame |
|---|---|
| lung ultrasound score;SpO2 desaturation rate;SpO2 nadir;Pediatric Anesthesia Emergence Delirium (PAED) scale; | — |
Countries
China
Contacts
Public ContactHu Wei
Shenzhen Children's Hospital
Outcome results
None listed