HFNO Reducing the Incidence of Hypoxia for Hysteroscopy Sedated With Propofol

Exclusion Criteria

• •1. Epistaxis, nasal congestion and nasal mucosal damage.
• •2. Confirmed brain disease (cranial trauma, tumor, stroke, cognitive dysfunction etc.).
• •3. Confirmed severe heart disease (heart failure, angina pectoris, myocardial infarction, arrhythmia, etc.).
• •4. Confirmed severe lung diseases (upper respiratory tract infection, asthma, bronchitis, COPD, bullae, pulmonary embolism, pulmonary edema, lung cancer, etc.).
• •5. Pregnant women.
• •6. Acute and chronic hepatitis or liver cirrhosis with severe abnormal liver function.
• •7. Acute and chronic nephritis with severe abnormal renal function or renal failure.
• •8. Needing oxygen inhalation for underlying diseases.
• •9. Emergency surgery.
• •10. Combined with multiple trauma.
• •11. Allergic to soybean