Antibiotic-impregnated versus standard silicone catheter for external ventricular drainage in acute hydrocephalus associated to aneurysmal subarachnoid hemorrhage: a budget impact analysis from a single center Italian cohort.

Abstract

Acute hydrocephalus is a frequent complication of aneurysmal subarachnoid hemorrhage, and it is generally treated by external ventricular drainage. In the last decades, antibiotic-impregnated ventricular catheters have been introduced in the neurosurgical practice in order to reduce secondary cerebrospinal fluid infections which increase morbidity, mortality, and health care costs. Data of 100 patients treated at Fondazione Policlinico Universitario Agostino Gemelli IRCCS between January 2012 and December 2019 were retrospectively reviewed in order to determine the cost-effectiveness and budget impact of antibiotic impregnated versus non-impregnated catheters in the management of patients with aneurysmal subarachnoid hemorrhage related hydrocephalus. A budget impact model was built depending on the use of antibiotic impregnated versus non-impregnated catheters. The model was populated with data extrapolated from existing literature concerning the Italian healthcare setting and national tariffs. A 25% reduction in the number of cerebrospinal fluid infections was achieved by using antibiotic impregnated catheters, resulting in an overall saving equal to €5730.52/patient. Expanding results to a 100-patient sample, the possible savings would amount to €573,052.40 for the National Health Service. Antibiotic impregnated catheters use was associated to a reduction in cerebrospinal fluid infections rate as well as in costs related to hospital care when compared to nonimpregnated catheters. Thus these catheters represent, besides lifesaving, cost-saving devices that reduce the economic burden and ensure a safe clinical outcome in patients with aneurysmal subarachnoid hemorrhage related hydrocephalus. The present study provides concrete evidence of the benefit of Antibiotic impregnated catheters to decision-makers responsible of defining health policies.