• Shivani D Rangwala, Jane S Han, Krista Lamorie-Foote, Li Ding, Steven L Giannotta, Frank J Attenello, and William Mack.
• Department of Neurosurgery, The Keck School of Medicine of the University of Southern California, Los Angeles, California, USA.
• World Neurosurg. 2024 Jan 1; 181: e882e896e882-e896.

IntroductionFrailty is a state of decreased physiologic reserve associated with adverse treatment outcomes across surgical specialties. We sought to determine whether frailty affected patient outcomes after elective treatment (open microsurgical clipping or endovascular therapy [EVT]) of unruptured cerebral aneurysms (UCAs).MethodsThe National Readmissions Database was queried from 2010 to 2014 to identify patients who had a known UCA and underwent elective clipping or EVT. Frailty was assessed using the Johns Hopkins Adjusted Clinical Groups frailty indicator tool. Multivariable exact logistic regression analyses were conducted to assess the associations between frailty and the primary outcome variables of 30- and 90-day readmissions, complications, length of stay (LOS), and patient disposition.ResultsOf 18,483 patients who underwent elective treatment for UCAs, 358 (1.9%) met the criteria for frailty. After adjusting for patient- and hospital-based factors, frailty (30-day: odds ratio [OR], 1.55; 95% confidence interval [CI], 1.11-2.17; P = 0.01; 90-day: OR, 1.47; 95% CI, 1.05-2.06; P = 0.02) and clipping versus EVT (30-day: OR, 2.12; 95% CI, 1.85-2.43; P < 0.000; 90-day: OR, 1.80; 95% CI, 1.59-2.03; P < 0.0001) were associated with increased readmission rates. Furthermore, frailty was associated with an increased rate of complications (surgical: OR, 2.91; 95% CI, 2.27-3.72; P < 0.0001; neurological: OR, 3.04; 95% CI, 2.43-3.81; P < 0.0001; major: OR, 2.75; 95% CI, 1.96-3.84; P < 0.0001), increased LOSs (incidence rate ratio, 3.08; 95% CI, 2.59-3.66; P < 0.0001), and an increased rate of nonroutine disposition (OR, 3.94; 95% CI, 2.91-5.34; P < 0.0001).ConclusionsFrailty was associated with an increased likelihood of 30- and 90-day readmissions after elective treatment of UCAs. Frailty was notably associated with several postoperative complications, longer LOSs, and nonroutine disposition in the treatment of UCAs.Copyright © 2023 Elsevier Inc. All rights reserved.

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