Atelectasis
Conditions
Interventions
Nitrous oxide group:In the nitrous oxide group, anesthesia was maintained with 60% nitrous oxide mixed with 40% oxygen
No nitrous oxide group:In the no-nitrous oxide group, anesthesia was maintained with 60% air mixed with 40% oxygen
Sponsors
The Affiliated Sheng Jing Hospital of China Medical University
Eligibility
Sex/Gender
All
Age
65 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Age: =65 years old; 2.ASA rating: I-III; 3. Explain the purpose, content and methods of the study to the patients and their families before surgery, obtain the consent of the patients and their families and sign the informed consent.
Exclusion criteria
Exclusion criteria: 1. Preoperative pulmonary inflammation, pulmonary edema, emphysema, chronic obstructive pulmonary disease or diaphragmatic dysfunction; 2. Previous history of intrathoracic surgery or cardiopulmonary injury; 3. Nitrous oxide is contraindicated; 4. Obesity (BMI=30); 5. Difficult airway.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Incidence of atelectasis;The severity of atelectasis; | — |
Secondary
| Measure | Time frame |
|---|---|
| Oxygenation index;Postoperative hospital stay;The incidence of other postoperative complications during hospitalization; | — |
Countries
China
Contacts
Public ContactBo Long
The Affiliated Sheng Jing Hospital of China Medical University
Outcome results
None listed