• Erica F Bisson, John Dimar, James S Harrop, Daniel J Hoh, Basma Mohamed, Praveen V Mummaneni, Marjorie C Wang, and Sanjay Dhall.
• Clinical Neurosciences Center, University of Utah Health, Salt Lake City, Utah, USA.
• Neurosurgery. 2021 Oct 13; 89 (Suppl 1): S26-S32.

BackgroundPreoperative malnutrition has been implicated in adverse events after elective surgery, potentially impacting patient outcomes.ObjectiveAs a potentially modifiable risk factor, we sought to determine which assessments of nutritional status were associated with specific adverse events after spine surgery. In addition, we explored if a preoperative nutritional improvement intervention may be beneficial in lowering the rates of these adverse events.MethodsThe literature search yielded 115 abstracts relevant to the PICO (patient/population, intervention, comparison, and outcomes) questions included in this chapter. The task force selected 105 articles for full text review, and 13 met criteria for inclusion in this systematic review.ResultsMalnutrition, assessed preoperatively by a serum albumin <3.5 g/dL or a serum prealbumin <20 mg/dL, is associated with a higher rate of surgical site infections (SSIs), other wound complications, nonunions, hospital readmissions, and other medical complications after spine surgery. A multimodal nutrition management protocol decreases albumin and electrolyte deficiencies in patients with normal preoperative nutritional status. It also improves overall complication rates but does not specifically impact SSIs.ConclusionIt is recommended to assess nutritional status using either serum albumin or prealbumin preoperatively in patients undergoing spine surgery.The full guidelines can be accessed at https://www.cns.org/guidelines/browse-guidelines-detail/4-preoperative-nutritional-assessment.© Congress of Neurological Surgeons 2021.

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