Hospital and PACU stays
bleeding, pneumonia, atelectasis
POSTOPERATIVE COMPLICATION, BLEEDING, PNEUMONIA, ATELECTASIS
Length of stay was defined as the number of days in the postoperative hospital stay.The length of post-anesthetic care unit (PACU) stay was the duration spent in the PACU. PACU discharge criteria were as follows: (1) awake and recovery of airway protective reflex; (2) hemodynamic stability; (3) recovery of spontaneous breathing, maintain airway patency, airway protective reflex recovery, respiration and oxygenation returned to preoperative basal levels (4) no obvious active bleeding, electrolyte and acid-base imbalances, and urine volume > 0.5 ml/kg/h.Postoperative complications were confirmed through review of medical records and plain film radiographs or computed tomography images for the diagnosis of atelectasis and pneumonia.