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Acta Neurochir (Wien) ; 164(4): 973-984, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35239013

RESUMO

PURPOSE: Currently, there is an increasing tendency to refer only complex aneurysms for microsurgery. The formation of new neurosurgeons dedicated to open vascular neurosurgery becomes challenging in a situation in which complex aneurysms must be dealt with early in the career, raising questions about the safety of the learning curve. METHODS: We analyzed the characteristics and surgical results of the first 300 consecutively treated patients after subarachnoid hemorrhage by a single neurosurgeon. The incidence of surgical complications and clinical outcomes during the learning curve were analyzed, looking for critical periods regarding patient safety. Microsurgical operative times were also studied. RESULTS: A high frequency of wide-necked aneurysms was observed (70.3%), and, as a result, large (> 10 mm), MCA and paraclinoid aneurysms were overrepresented. A statistically significant correlation between surgical experience and clinical outcomes was observed, with progressive surgical experience resulting in a lower incidence of unfavorable outcomes. We also observed a higher frequency of major surgical complications, unfavorable clinical outcomes, and lower complete occlusion rates among the first 40 patients. Microsurgical operative times progressively and significantly decreased during the learning curve. CONCLUSIONS: We observed a high prevalence of wide-necked aneurysms. Young neurosurgeons must be trained and prepared to deal with these aneurysms early in their careers. Although we observed a decrease in unfavorable results with cumulative surgical experience, the first 40 cases were associated with higher rates of major surgical complications, worse clinical outcomes, and lower complete occlusion rates, indicating that this period may be more critical to patient safety.


Assuntos
Aneurisma Roto , Procedimentos Endovasculares , Aneurisma Intracraniano , Hemorragia Subaracnóidea , Aneurisma Roto/etiologia , Procedimentos Endovasculares/efeitos adversos , Humanos , Aneurisma Intracraniano/complicações , Curva de Aprendizado , Microcirurgia/efeitos adversos , Microcirurgia/métodos , Estudos Retrospectivos , Hemorragia Subaracnóidea/complicações , Resultado do Tratamento
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