Spinal Versus General Anesthesia on Postoperative Pulmonary Complications

In this study, the difference of 30 min arterial partial pressure of oxygen after operation was used as the main outcome index. By means of pulmonary ultrasound, pulmonary function monitoring and other physical and biochemical examinations, the difference of postoperative pulmonary complications between spinal anesthesia and general anesthesia in patients with delayed operation of hip fracture longer than 48 hours was compared.

Inclusion criteria

• Patients ≥ 65 years old
• ASA Class I ~ III
• Surgical repair of femoral neck, intertrochanteric or subtrochanteric fractures
• The time from diagnosis to surgery is more than 48 hours

Exclusion criteria

• Unable to walk about 3 meters or across a room without assistance before the fracture
• Emergency surgery
• Congestive heart failure, asthma, anemia (Hb < 90 g/L), hypoalbuminemia (ALB < 35g/L)
• Abnormal coagulation function
• Severe aortic stenosis
• Injection site infection or increased intracranial pressure
• Patients have participated in previous trials or have been determined by a surgeon or anesthesiologist to be unsuitable for randomization
• The written informed consent of the patient or his/her representative cannot be obtained