• Anna M Nia, Daniel W Branch, Ken Maynard, Thomas Frank, Dmitry Zavlin, Joel T Patterson, and Rishi R Lall.
• Division of Neurosurgery, University of Texas Medical Branch, Galveston, Texas, USA. Electronic address: amnia@utmb.edu.
• World Neurosurg. 2019 Jun 1; 126: e1055-e1062.

BackgroundWhen diagnosed simultaneously, obesity, diabetes, and hypertension form a medical constellation called metabolic syndrome (MetS). The prevalence of MetS in Western cultures has been on a steady increase and MetS has been associated with increased postoperative complications in multiple surgical settings.ObjectiveIn this study, we evaluate the relationship between MetS and the outcomes of craniotomy for supratentorial brain tumor.MethodsCases of craniotomy for supratentorial brain tumors were extracted from the American College of Surgeons National Surgical Quality Improvement Program for 2012-2016. The 15,136 patients identified were divided into 2 cohorts based on the presence (4.1%) or absence (95.9%) of MetS. We compared the 2 cohorts for preoperative comorbidities, intraoperative details, and postoperative morbidity and mortality.ResultsPatients in the MetS+ cohort were significantly older (63.4 vs. 56.1 years) and were more likely to show comorbidities of various organ systems (all P ≤ 0.05). However, operative times were similar (P = 0.573). The number of medical complications was almost double in patients with MetS (15.8% vs. 8.5%; P ≤ 0.001). Unplanned readmissions (14.6% vs. 10.4%; P = 0.004), reoperations (6.9% vs. 4.6%; P = 0.007), and mortality (5.6% vs. 2.9%; P ≤ 0.001) were also more frequent in our MetS+ group. Nevertheless, surgical complications localized to the operative site were not statistically increased (7.4% vs. 5.8%; P = 0.098).ConclusionsA diagnosis of MetS does not seem to be associated with increased rates of surgical site events. However, neurosurgeons should be aware that these patients have a significantly higher likelihood of general medical complications, readmissions, reoperations, and death.Copyright © 2019 Elsevier Inc. All rights reserved.

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