Colorectal Cancer
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Gender not limited, age >= 65 years, BMI 18.0-28.0 kg/m², ASA class II-III; 2. Scheduled for elective laparoscopic resection of colon or rectal cancer; 3. Requires mechanical ventilation under general anesthesia.
Exclusion criteria
Exclusion criteria: 1.Those with preoperative acute upper respiratory tract infection or acute pulmonary infection that is poorly controlled; 2. Those with severe hypoproteinemia and hypoxemia before surgery; 3. Patients with severe COPD and/or severe lung function impairment; 4.Those with thoracic deformities or thoracic vertebral spine deformities affecting ventilation functions; 5. Those with a history of asthma.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| oxygenation index,OI;respiratory index,RI; | — |
Secondary
| Measure | Time frame |
|---|---|
| end-tidal carbon dioxide pressure,PETCO2;driving pressure,?P;positive end-expiratory pressure,PEEP;peak inspiratory pressure,PIP;pulmonary dynamic compliance,Cdyn; | — |
Countries
China
Contacts
Nanjing Medical University Affiliated Taizhou People's Hospital