Trial Parameters
Brief Summary
Respiratory muscle dysfunction may contribute to the development of postoperative pulmonary complications. However, it prevalence in patients receiving neurosurgery is largely unknown. Therefore, in present study, respiratory muscle function (measured by the ultrasound) and their correlation with the post-operative pulmonary complications will be analyzed.
Eligibility Criteria
Inclusion Criteria: * Informed consent * First elective operation during hospitalization * ASA\<3 Exclusion Criteria: * Brain stem and spinal spine lesions * Preoperative chest imaging findings were abnormal * Mechanical ventilation was required before surgery * Clinical or radiological evidence of preoperative misaspiration * History of neurosurgery in the last 6 months * A history of neuromuscular disease * BMI≥35kg/m2 * Pregnant women * Skin lesions detected by ultrasound