• Asdrubal Falavigna, ArrudaAndré de OliveiraAO0000-0001-6579-8234Postgraduation Program in Health Sciences, University of Caxias do Sul, Caxias do Sul, Brazil.Cajuru University Hospital, Spine Surgery Unit, Curitiba, Brazil., Righesso NetoOrlandoOPostgraduation Program in Health Sciences, University of Caxias do Sul, Caxias do Sul, Brazil., Diego Dozza, Juan Pablo Guyot, Ratko Yurac, Pablo Gustavo Jalón, AvilaJosé Maria JiménezJMJDepartment of Orthopedics and Traumatology, Hospital de Especialidades, Guadalajara, Mexico.Instituto Tecnológico y de Estudios Superiores de Monterrey, Campus Guadalajara, Guadalajara, Jalisco, México., Barón Zárate, Nicolas Scheverin, and Zoher Ghogawala.
• Postgraduation Program in Health Sciences, University of Caxias do Sul, Caxias do Sul, Brazil.
• Neurosurgery. 2023 Jun 1; 92 (6): 128712961287-1296.

BackgroundIn the context of anterior approach to the cervical spine, dysphagia is a common complication and still without a clear distinction of risk factors.ObjectiveTo analyze the risk factors of dysphagia after cervical spine surgery.MethodsMulticenter prospective study evaluated patients who underwent anterior cervical spine surgery for degenerative pathologies, studying surgical, anesthesia, base disease, and radiological variables (preoperatively, 24 hours, 1 and 3 weeks, and 6 months after surgery), with control group matched. Postoperative dysphagia was assessed by Swallowing Satisfaction Index and Swallowing Questionnaire; besides, based on multiple logistic regression model, a risk factor analysis correlation was applied.ResultsIn total, 233 cervical patients were evaluated; most common level approached was C5-C6 (71.8%). All showed same decreasing trade for dysphagia incidence-with more cases on cervical group ( P < .05); severe cases were rare. At postoperative day 1, identified risk factors were approach to C3-C4 (4.11, P < .01), loss of preoperative cervical lordosis (2.26, P < .01), intubation attempts ≥2 (3.10, P < .01), and left side approach (1.85, P = .02); at day 7, body mass index ≥30 (2.29, P = .02), C3-C4 (3.42, P < .01), and length of surgery ≥90 minutes (2.97, P = .005); and at day 21, C3-C4 were kept as a risk factor (3.62, P < .01).ConclusionA high incidence level of dysphagia was identified, having a clear decreasing trending (number of cases and severity) through postoperative time points; considering possible risk factors, strongest correlation was the approach at the C3-C4 level-statistically significant at the 24 hours, 7 days, and 21 days assessment.Copyright © Congress of Neurological Surgeons 2023. All rights reserved.

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