Overview

Patients at high risk of post-operative pulmonary complications (PPC) will be screened out from gynecological tumor patients undergoing surgical treatment, and randomly assigned into the HFNC group and control group, which uses conventional nasal cannula oxygen therapy. The primary outcome is the incidence of PPC, including postoperative hypoxemia, atelectasis, pneumonia, etc. Secondary outcomes are the improvement of postoperative oxygenation, antibiotic use, length of hospital stay, adverse events related to oxygen therapy, etc.

Eligibility

Inclusion Criteria:

• Patients with gynecologic Neoplasms, including benign gynecologic tumors and malignant gynecologic tumors, who are 18 to 90 years old and are scheduled for surgical treatment in our center shall receive plain chest CT scan within 1 week before surgery, and the estimated surgical time shall be ≥2 hours, and at least one of the following conditions shall be met:
  1. Assess respiratory risk in surgical patients in Catalonia (ARRSPC) ≥45 points;
  2. BMI≥30;
  3. Moderate to severe asthma;
  4. Moderate to severe chronic obstructive pulmonary disease (COPD);
  5. Smoking history ≥20 packs/year

Exclusion Criteria:

1. Patients with lung metastasis of malignant tumor or primary lung malignant tumor;
2. previous lung surgery or radiotherapy;
3. the surgery involved segmental bowel resection.