Atelectasis
Conditions
Interventions
Group A:After anesthetic induction and full onset of drug effects, endotracheal intubation was performed with the fraction of inspired oxygen (FiO2) set at 40%. Following the initiation of surgery, Fi
Group B :After anesthetic induction and full onset of drug effects, endotracheal intubation was performed with the fraction of inspired oxygen (FiO2) set at 40%. Lung recruitment maneuver was conducte
Group C :After anesthetic induction and full onset of drug effects, endotracheal intubation was performed with the fraction of inspired oxygen (FiO2) set at 40%. Following the initiation of surgery, F
Group D :After anesthetic induction and full onset of drug effects, endotracheal intubation was performed with the fraction of inspired oxygen (FiO2) set at 40%. Following the initiation of surgery, F
Sponsors
Subei People's Hospital of Jiangsu
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Patients with ASA Physical Status Classification ?-?; 2. Voluntarily participate in this study and sign the informed consent form; 3. Patients undergoing elective head and neck surgery under general anesthesia; 4. No restriction on gender; aged 18-64 years; Body Mass Index (BMI) 18-25 kg/m²; 5. Patients with an expected operation duration of >=1.5 hours and estimated intraoperative blood loss of <=200 ml.
Exclusion criteria
Exclusion criteria: 1. Patients with a history of thoracic surgery; 2. Patients with chest X-ray or CT indicating pneumothorax or pulmonary bullae; 3. Patients with pulmonary diseases, including chronic bronchitis, asthma, and moderate to severe obstructive ventilatory dysfunction; 4. Patients with preoperative pulse oxygen saturation (SpO2) < 90% while breathing ambient air, or SpO2 < 95% with oxygen supplementation; 5. Patients with contraindications for lung recruitment, including high intracranial pressure, hypovolemic shock, and right heart failure; 6. Patients with severe heart diseases, including New York Heart Association (NYHA) Class ? or ? heart failure, acute coronary syndrome, and sustained ventricular tachyarrhythmia; 7. Patients currently participating in other interventional studies, or those who refuse to be enrolled.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Lung compliance response time; | — |
Secondary
| Measure | Time frame |
|---|---|
| Hypoxemia;Oxygenation index;Atelectasis;Pulmonary complications; | — |
Countries
China
Contacts
Public ContactJu Gao
Subei People's Hospital of Jiangsu province
Outcome results
None listed