• Hormuzdiyar H Dasenbrock, Arthur R Bartolozzi, William B Gormley, Kai U Frerichs, M Ali Aziz-Sultan, and Rose Du.
• *Neurosurgical Outcomes Center, Boston, Massachusetts; ‡Department of Neurological Surgery, Brigham and Women's Hospital, Boston, Massachusetts; §Harvard Medical School, Boston, Massachusetts.
• Neurosurgery. 2016 Mar 1; 78 (3): 412-20.

BackgroundClostridium difficile infection (CDI) is an important cause of hospital-acquired morbidity and mortality.ObjectiveTo evaluate the incidence of, predictors for, and effects on outcome by CDI after aneurysmal subarachnoid hemorrhage.MethodsData were extracted from the Nationwide Inpatient Sample (2002-2011). Patients with subarachnoid hemorrhage who underwent microsurgical or endovascular aneurysm repair were included. Multivariate logistic regression was used to determine the independent predictors of developing CDI. Additional models were constructed to assess the impact of CDI on mortality, length of stay, and discharge disposition.ResultsOf the 18 007 patients who were included, 1.9% (n = 346) developed CDI. Patients who developed CDI were significantly older and had more comorbidities (P ≤ .001). Independent predictors of developing CDI were Medicaid payer status; ventriculostomy; mechanical ventilation; a greater number of noninfectious complications; and the development of a urinary tract infection; pneumonia; meningitis/ventriculitis; and sepsis (all P ≤ .02). Only 1.5% of patients with CDI required gastrointestinal surgery. Although CDI was not associated with differential mortality, it was associated with increased adjusted odds of a hospital stay of at least 24 days (odds ratio, 3.16; 95% confidence interval, 2.32-4.29; P < .001) and of a nonroutine hospital discharge (odds ratio, 1.64; 95% confidence interval, 1.13-2.39; P = .01).ConclusionIn this nationwide analysis, both infectious and noninfectious complications, as well as ventriculostomy, mechanical ventilation, and insurance status were independent predictors of CDI. Although CDI was not associated with mortality, it was associated with a longer hospital stay and nonroutine hospital discharge.

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