• Yuki Mihara, Weng Hong Chung, Chee Kidd Chiu, Mohd Shahnaz Hasan, Sin Ying Lee, Pei Ying Ch'ng, Chan Chris Yin Wei CYW Department of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia., and Mun Keong Kwan.
• Department of Orthopaedic Surgery, Hamamatsu University, School of Medicine, Handayama Higashi-ku, Hamamatsu-shi, Shizuoka prefecture, Japan.
• Spine. 2020 Mar 15; 45 (6): 381-389.

Study DesignRetrospective study from a prospectively collected database.ObjectiveTo compare the perioperative outcome between after-hours and daytime surgery carried out by a dedicated spinal deformity team for severe Idiopathic Scoliosis (IS) patients with Cobb angle ≥ 90°.Summary Of Background DataThere were concerns that after-hours corrective surgeries in severe IS have higher morbidity compared to daytime surgeries.MethodsSeventy-one severe IS patients who underwent single-staged Posterior Spinal Fusion (PSF) were included. Surgeries performed between 08:00H and 16:59H were classified as "daytime" group and surgeries performed between 17:00H and 06:00H were classified as "after-hours" group. Perioperative outcome parameters were average operation start time and end time, operation duration, intraoperative blood loss, intraoperative hemodynamic parameters, preoperative and postoperative hemoglobin, blood transfusion rate, total patient-controlled anesthesia (PCA) morphine usage, length of postoperative hospitalization, and complications. Radiological variables assessed were preoperative and postoperative Cobb angle, side bending flexibility, number of fusion levels, number of screws used, Correction Rate, and Side Bending Correction Index.ResultsThirty patients were operated during daytime and 41 patients were operated after-hours. The mean age was 16.1 ± 5.8 years old. The mean operation start time for daytime group was 11:31 ± 2:45H versus 19:10 ± 1:24H for after-hours group. There were no significant differences between both groups in the operation duration, intraoperative blood loss, intraoperative hemodynamic parameters, postoperative hemoglobin, hemoglobin drift, transfusion rate, length of postoperative hospitalization, postoperative Cobb angle, Correction Rate, and Side Bending Correction Index. There were four complications (1 SSEP loss, 1 massive blood loss, and 2 superficial wound infections) with no difference between daytime and after-hours group.ConclusionAfter-hours elective spine deformity corrective surgeries in healthy ambulatory patients with severe IS performed by a dedicated spinal deformity team using dual attending surgeon strategy were as safe as those performed during daytime.Level Of Evidence4.

28 keywords...

hide…