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  • Title: Economic evaluation of chlorhexidine-impregnated sponges for preventing catheter-related infections in critically ill adults in the Dressing Study.
    Author: Schwebel C, Lucet JC, Vesin A, Arrault X, Calvino-Gunther S, Bouadma L, Timsit JF.
    Journal: Crit Care Med; 2012 Jan; 40(1):11-7. PubMed ID: 21926570.
    Abstract:
    BACKGROUND: The randomized two-way factorial Dressing Study (1,636 patients, 28,931 catheter days) showed that a chlorhexidine-impregnated sponge decreased the incidence of major catheter-related infections from 1.4‰ to 0.6‰ catheter days, and that scheduled dressing changes every 7 days was not inferior to scheduled changes every 3 days. Here, we assessed the cost benefits of chlorhexidine-impregnated sponge use. METHODS: Costs directly related to major catheter-related infections and the costs of chlorhexidine-impregnated sponge and contact dermatitis were calculated prospectively using microcosting methods during the original study. The added length of stay in the intensive care unit due to major catheter-related infection was estimated using the disability model and assuming a cost of $2,118/intensive care unit day. The cost of each strategy was estimated based on all costs and on the probability of major catheter-related infection according to the Dressing Study results. INTERVENTIONS: None. RESULTS: Median direct cost of major catheter-related infection was $792. Estimated added length of stay due to major catheter-related infection was 11 days (95% confidence interval [-2 days; 26 days]). Overall cost of major catheter-related infection was $24,090/episode. Each dressing cost $9.08 (146 observations) and each chlorhexidine-impregnated sponge cost $9.73. Assuming a baseline major catheter-related infection incidence of 1.4‰ catheter days, chlorhexidine-impregnated sponge use saved $197 per patient with the 3-day chlorhexidine-impregnated sponge dressing change strategy, and $83 with the 7-day standard dressing change strategy. Chlorhexidine-impregnated sponge use remained cost saving assuming a baseline major catheter-related infection incidence as low as 0.35‰ catheter days, or an overall cost per major catheter-related infections of up to $4,400. CONCLUSION: Chlorhexidine-impregnated sponge for arterial and central venous catheters saves money by preventing major catheter-related infections, even in intensive care units with low baseline major catheter-related infection levels. TRIAL REGISTRATION: Clinicaltrials.gov number, NCT00417235.
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