• World Neurosurg · Oct 2010

    Cost analysis of antibiotic-impregnated catheters in the treatment of hydrocephalus in adult patients.

    • S Harrison Farber, Scott L Parker, Owoicho Adogwa, Daniele Rigamonti, and Matthew J McGirt.
    • Department of Neurosurgery, The Johns Hopkins Hospital, Baltimore, Maryland, USA.
    • World Neurosurg. 2010 Oct 1;74(4-5):528-31.

    ObjectiveTo determine if use of antibiotic-impregnated shunt (AIS) systems to reduce cerebrospinal fluid (CSF) shunt infections in adult patients with hydrocephalus has been cost-effective at one institution.MethodsAll adult patients undergoing CSF shunt insertion over a 7-year period at the Johns Hopkins Hospital were retrospectively reviewed (2004-2009). In 2006, a categorical switch to AIS catheters was made. Before 2006, standard nonimpregnated shunt catheters were used. The 1-year incidence of shunt infection was retrospectively assessed and accounting and billing records were reviewed to determine shunt infection-related medical costs for patients undergoing AIS vs non-AIS shunt surgery.ResultsA total of 500 (250 AIS, 250 non-AIS) shunt surgeries were performed for normal-pressure hydrocephalus (NPH) (n = 378 [76%]), pseudotumor cerebri (n = 83 [17%]), and various obstructive and communicating hydrocephalus etiologies (n = 40 [8%]). The incidence of shunt infection was decreased in the AIS (1.2%) vs non-AIS (4.0%) cohorts (P = .0492. Overall, the mean cost per shunt infection was $40,371. Per 250 shunts placed, the total infection-related cost was reduced from $321,407 to $203,424 after the conversion to AIS catheters. AIS catheters were associated with direct cost savings of $47,193 per 100 shunt surgeries performed.ConclusionsIn a retrospective cohort study of 500 CSF shunt surgeries performed in adult patients with hydrocephalus, this institution's categorical conversion to AIS catheters was associated with a significant reduction in infection-related medical costs within the first year after surgery. Although prospective randomized cost-utility studies are needed to confirm these observations, these results suggest that AIS catheters are cost-effective in the treatment of hydrocephalus in adult patients.Copyright © 2010 Elsevier Inc. All rights reserved.

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