Pulmonary complications
Conditions
Interventions
Oxygen concentration 50%:The inspired oxygen concentration during the maintenance period of anesthesia was adjusted to 50%.
Oxygen concentration 30%:The inspired oxygen concentration during the maintenance period of anesthesia was adjusted to 30%.
Oxygen concentration 80%:The inspired oxygen concentration during the maintenance period of anesthesia was adjusted to 80%.
Sponsors
Qinghai Provincial People's Hospital
Eligibility
Sex/Gender
All
Age
60 Years to 80 Years
Inclusion criteria
Inclusion criteria: Elderly patients undergoing laparoscopic surgery, all of whom came from an altitude of more than 2,500 meters; Gender unlimited, age 60 ~ 80 years old, BMI18 ~ 25kg/m^2; ASA grade I ~ III; Preoperative lung function was normal;
Exclusion criteria
Exclusion criteria: Preoperative complications of severe respiratory diseases, such as COPD, severe respiratory tract, lung infection, and cardiopulmonary insufficiency I've done any kind of lung surgery before Mechanical ventilation within 2 weeks People with a history of neurosurgery or communication disorders with central systemic diseases Preoperative visits predicted difficulty in intubation or a history of difficulty/failure in intubation Denial of written informed consent
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| LUS score (T5);Anteroposterior chest X-ray (T6); | — |
Secondary
| Measure | Time frame |
|---|---|
| Peak airway pressure;Alveolar-arterial oxygen partial pressure difference;Pulmonary oxygenation index;Calculate dynamic lung compliance;Mean arterial pressur;heart rate;degree of blood oxygen saturation;The use of vasoactive drugs during surgery;The overall incidence of postoperative adverse reactions;Postoperative hospital stay days;Duration of pneumoperitoneum;infusion quantity;cadaverine quantity of bleeding; | — |
Countries
China
Contacts
Public Contacthaiyanyu
Qinghai Provincial People's Hospital
Outcome results
None listed