Comparison of CLSB With Sedation Versus General Endotracheal Anesthesia on Postoperative Outcomes in Elderly Patients Undergoing Hip Fracture Surgery

Inclusion Criteria

• •1. Age ≥77 years old;
• •2. First unilateral surgery for hip fracture including femoral neck, intertrochanteric or subtrochanteric fracture;
• •3. Patient with planned hip fracture surgery within 24-72 h;
• •4. Patient without peripheral nerve block within 24 h prior to surgery;
• •5. The ability to receive written informed consent from the patient or patient's legal representative.
• •4. Prosthetic fracture;
• •5. Scheduled for bilateral hip fracture surgery;
• •6. Usage of bone-cement fixation in the surgery;
• •7. With recent cerebral stroke (\<3 months);
• •8. Combined with active heart disease (unstable angina, acute myocardial infarction, recent myocardial infarction; decompensated heart failure; symptomatic arrhythmia; severe mitral or aortic stenotic heart disease);
• •9. Patient with known severe lung and/or airway disease, acute respiratory failure, acute pulmonary infection, and acute attack of bronchial asthma;
• •10. Current enrolment in another clinical trial;
• •11. Contraindication for general endotracheal anesthesia(drug allergies to general anesthesia, difficult airway);
• •12. Contraindication for lumbar and sacral plexus block(infection at the site of needle insertion, coagulopathy, allergy to local anesthetics).