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Pooled analysis of unsuccessful percutaneous biportal endoscopic surgery outcomes from a multi-institutional retrospective cohort of 797 cases

 Wanseok Kim  ;  Seung-Kook Kim  ;  Sang-Soo Kang  ;  Hyun-Jin Park  ;  Sangho Han  ;  Su-Chan Lee 
 ACTA NEUROCHIRURGICA, Vol.162(2) : 279-287, 2020-02 
Journal Title
Issue Date
Adult ; Aged ; Decompression, Surgical / adverse effects ; Decompression, Surgical / methods* ; Endoscopy / adverse effects ; Endoscopy / methods* ; Female ; Humans ; Lumbar Vertebrae / surgery* ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures / adverse effects ; Minimally Invasive Surgical Procedures / methods* ; Postoperative Complications / epidemiology* ; Postoperative Complications / surgery ; Reoperation / statistics & numerical data
Complication ; Endoscopic surgery ; Patient satisfaction ; Reoperation ; Surgical outcomes
Background Spinal percutaneous biportal endoscopic surgery (PBES) is a minimally invasive surgery; however, it is associated with several poor outcomes. This study aimed to analyze unsuccessful PBES outcomes and verify their relationships with patient satisfaction. Methods From May 2015 to June 2018, PBES was performed at several institutions. Unsuccessful outcomes (reoperation and prolonged hospital stay) due to various reasons (hematoma, lesion recurrence, incomplete decompression, dural tear, instability, ascites, and infection) were analyzed. To verify the relationships between surgical experience and unsuccessful outcomes, the first 50 cases and the later cases were compared. Logistic regression was used to assess the relationships between unsuccessful outcomes and patient dissatisfaction. Results Among 866 patients, 797 cases with 1-year follow-up and complete data were analyzed. In total, 82 patients with unsuccessful outcomes were identified (10.29%). The incidences of hematoma (p < 0.04), incomplete operation (p < 0.01), and dural tear (p < 0.01) were significantly higher in the first 50 cases than in the later cases. Analyses of the relationship between unsuccessful outcomes and patient dissatisfaction showed that incomplete decompression (odds ratio (OR) 4.06), postoperative instability (OR 3.64), hematoma (OR 3.25), ascite (OR 3.25), dural tear (OR 3.02), and local recurrence (OR 2.45, 95%) contributed significantly. Conclusions Unsuccessful PBES outcomes were mostly associated with hematomas, incomplete decompression, and dural tears; instability, ascites, and infection contributed to a lesser extent. Incomplete decompression, instability, hematoma, ascite, dural tear, and local recurrence were significantly related to patient dissatisfaction. The potential for poor outcomes should be described to the patient and considered prior to surgery.
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