Decreased Hospital Costs and Surgical Site Infection Incidence With a Universal Decolonization Protocol in Primary Total Joint Arthroplasty.

BACKGROUND: Staphylococcus aureus colonization has been identified as a key modifiable risk factor in the reduction of surgical site infections (SSI) related to elective total joint arthroplasty (TJA). We investigated the incidence of SSIs and cost-effectiveness of a universal decolonization protocol without screening consisting of nasal mupirocin and chlorhexidine before elective TJA compared to a program in which all subjects were screened for S aureus and selectively treated if positive. METHODS: We reviewed 4186 primary TJAs from March 2011 through July 2015. Patients were divided into 2 cohorts based on the decolonization regimen used. Before May 2013, 1981 TJA patients were treated under a "screen and treat" program while the subsequent 2205 patients were treated under the universal protocol. We excluded the 3 months around the transition to control for treatment bias. Outcomes of interest included SSI and total hospital costs. RESULTS: With a universal decolonization protocol, there was a significant decrease in both the overall SSI rate (5 vs 15 cases; 0.2% vs 0.8%; P = .013) and SSIs caused by S aureus organisms (2 vs 10; 0.09% vs 0.5%; P = .01). A cost analysis accounting for the cost to administer the universal regimen demonstrated an actual savings of $717,205.59. TJA complicated by SSI costs 4.6× more to treat than that of an uncomplicated primary TJA. CONCLUSION: Our universal decolonization paradigm for elective TJA is effective in reducing the overall rate of SSIs and promoting economic gains for the health system related to the downstream savings accrued from limiting future reoperations and hospitalizations.

Impact of active screening for methicillin-resistant Staphylococcus aureus (MRSA) and decolonization on MRSA infections, mortality and medical cost: a quasi-experimental study in surgical intensive care unit.

INTRODUCTION: Methicillin-resistant Staphylococcus aureus (MRSA) is a leading pathogen of healthcare-associated infections in intensive care units (ICUs). Prior studies have shown that decolonization of MRSA carriers is an effective method to reduce MRSA infections in ICU patients. However, there is currently a lack of data on its effect on mortality and medical cost. METHODS: Using a quasi-experimental, interrupted time-series design with re-introduction of intervention, we evaluated the impact of active screening and decolonization on MRSA infections, mortality and medical costs in the surgical ICU of a university hospital in Taiwan. Regression models were used to adjust for effects of confounding variables. RESULTS: MRSA infection rate decreased from 3.58 (baseline) to 0.42‰ (intervention period) (P <0.05), re-surged to 2.21‰ (interruption period) and decreased to 0.18‰ (re-introduction of intervention period) (P <0.05). Patients admitted to the surgical ICU during the intervention periods had a lower in-hospital mortality (13.5% (155 out of 1,147) versus 16.6% (203 out of 1,226), P = 0.038). After adjusting for effects of confounding variables, the active screening and decolonization program was independently associated with a decrease in in-hospital MRSA infections (adjusted odds ratio: 0.3; 95% CI: 0.1 to 0.8) and 90-day mortality (adjusted hazard ratio: 0.8; 95% CI: 0.7 to 0.99). Cost analysis showed that $22 medical costs can be saved for every $1 spent on the intervention. CONCLUSIONS: Active screening for MRSA and decolonization in ICU settings is associated with a decrease in MRSA infections, mortality and medical cost.

Cost-effectiveness of non-surgical peri-implantitis treatments.

AIM: The purpose of the present study was to assess the cost-effectiveness of various alternatives of non-surgical peri-implantitis treatment. MATERIALS AND METHODS: A decision analytical model was constructed and populated with parameter estimates from recent literature for reduction in pocket probing depth (PPD) in response to eight different treatment alternatives. A micro-costing approach combined with an online expert survey was applied to simulate a decision-making scenario taking place in Germany. The treatment alternatives providing the most advantageous cost/outcome combinations were identified according to the net benefit criterion. Uncertainties regarding model input parameters were incorporated via simple and probabilistic sensitivity analysis based on Monte Carlo simulation. RESULTS: In the base case scenario, debridement alone, Air-Flow, debridement combined with PerioChip, and debridement combined with local antibiotics were identified as treatment strategies with comparably better value for money than Er:YAG laser monotherapy, Vector System, debridement combined with CHX, and photodynamic therapy. Sensitivity analysis revealed considerable decision uncertainty corresponding to limited evidence about different treatment alternatives for peri-implantitis treatment. CONCLUSIONS: Derivation of robust treatment recommendations for peri-implantitis requires more comprehensive and patient-centred evidence on peri-implantitis treatments.

Cost-effective analysis of topical chlorhexidine in hematologic patients at risk for oral mucositis.

OBJECTIVE: The aim of this study was to explore whether management of mucositis with Chlorhexidine (CHX) mouthwash could be a cost-effective method to decrease the risk of mortality and economic burden in hemato-oncologic or hematopoietic stem cell transplantation (HSCT) patients. METHODS: A cost-effectiveness analysis model of prophylactic CHX mouthwash use versus no-CHX mouthwash use for the prevention of oral mucositis was developed for patients undergoing cytotoxic therapy or HSCT. The outcome variable was survival. The primary variables were CHX mouthwash use, probability of mucositis, probability of increased hospital stay, and length of hospital stay. Probability and cost data were obtained from the literature. RESULTS: Our analysis selected CHX mouthwash use during anticancer treatment as the preferred strategy for the base-case analysis as compared to no CHX mouthwash (marginal value 0.032). There was a $14,391 cost difference per patient between the two strategies. CONCLUSION: The results of this study suggest that CHX mouthwash use during anticancer treatment results in an increased survival and decreased cost for the population studied. Using our base-case data, an additional 32 of every 1,000 hemato-oncologic or HSCT patients will survive when employing the preferred strategy of prophylactic CHX mouthwash. CLINICAL RELEVANCE: CHX mouthwash should be offered for hematologic patients undergoing HSCT or administered with chemotherapy.

Cost-effectiveness and cost-utility analyses of three different gargles in the treatment of chronic periodontitis.

OBJECTIVE: This study aimed to investigate the economics of three different gargles in the treatment of chronic periodontitis. METHODS: A total of 108 patients with periodontitis received one of the following three gargles: xipayi, compound chlorhexidine, or Kangfuxin gargle. The basic information of the patients, the costs of the gargles, the periodontal indexes before and after treatment, and the scores of the 3-level version of the EuroQol Five Dimensions Questionnaire were collected. The cost-effectiveness and cost-utility of the various gargles were determined. RESULTS: The cost-effectiveness ratios (CER) of the three groups after treatment were 1828.75, 1573.34, and 1876.92 RMB, respectively. The utility values before treatment were 0.92, 0.90, and 0.91, respectively, and the utility values after treatment were 0.98, 0.98, and 0.97, respectively. The cost-utility ratios (CURs) were 213.43, 195.61, and 301.53 RMB, respectively. CONCLUSIONS: For each increase in effective rate and quality-adjusted life years, the treatment cost of periodontitis patients was lower than the gross domestic product per capita of Jiangsu Province, indicating that the treatment cost is completely worth it. The CER and CUR results were the same, and the compound chlorhexidine group was the lowest, demonstrating that when the same therapeutic effect was achieved, it cost the least.

"Water or not water: That is the question." Analysis of costs and consumption of the operating theaters in a greener perspective.

OBJECTIVE: To compare the amounts of water and plastic used in surgical hand washing with medicated soaps and with alcohol-based products and to compare costs and consumption in a year, based on scheduled surgical activity. METHOD: This retrospective study was carried out at Udine's Gynecology Operating Block from October to November 2022. We estimated the average amount of water with a graduated cylinder and the total cost of water usage based on euros/m3 indicated by the supplier; for each antiseptic agent we collected the data relevant to wash time, amount of water and product used per scrub, number of handscrubs made with every 500 mL bottle and cost of a single bottle. We put data into two hypothetical contexts, namely WHO guidelines and manufacturers' recommendations. Data were subjected to statistical analysis. RESULTS: The daily amount of water using povidone-iodine, chlorhexidine-gluconate and alcohol-based antiseptic agents was 187.6, 140.7 and 0 L/day (P value = 0.001), respectively; A total of 69 000 L/year of water would be saved if alcohol-based products were routinely used. A single unit of an alcohol-based product allows three times as many handscrubs as any other product (P value = 0.001) with consequent reduction in plastic packaging. CONCLUSION: Despite the cost saving being negligible, choosing alcohol-based handrub over medicated soap handrub - on equal antiseptic efficacy grounds - could lead to a significant saving of water and plastic, thus making our operating theaters more environmentally friendly.

Observational study on preoperative surgical field disinfection: povidone-iodine and chlorhexidine-alcohol.

BACKGROUND AND OBJECTIVES: Surgical site infection (SSI) rate is reported to range around 16%. Preoperative skin disinfection is keystone for SSI reduction. Chlorhexidine-alcohol has been reported to be more effective than Povidone-iodine (PVI). However, in many countries established habits and the inferior costs of PVI restrain the employment of chlorhexidine disinfection kits (ChloraPrep®) for the preparation of the surgical field. MATERIALS AND METHODS: The costs of surgical field preparation in clean-contaminated surgery utilizing PVI (Betadine) and chlorhexidine alcohol and the evaluation of surgeon compliance and satisfaction, were studied by a observational study on 50 surgical operations in which surgical field was prepared with PVI checking established guidelines, and on 50 surgical operations in which chlorhexidine-alcohol (ChloraPrep) was employed. The use of auxiliary material was tabulated as well as the timing of the phases of disinfection and the surgeon's opinions. RESULTS: The use of auxiliary material (gloves, gauzes, paper towels, surgical instruments, small swabs for umbilical cleaning) is associated with the type of disinfectant, with major use of auxiliary materials recorded in PVI disinfection. PVI disinfection does not follow stringent guidelines, in particular waiting for the disinfectant to dry. PVI guidelines are more demanding than those relative to ChloraPrep. The time necessary for the preparation of the field is significantly longer for PVI. Auxiliary material and guideline compliance must be taken into account when calculating costs; the former are direct costs (even though marginal) and the latter can determine major infective risk. CONCLUSIONS: Chlorhexidine in kits is easier and faster to use than PVI, requires less auxiliary material and has been shown previously to reduce SSI in clean contaminated surgery.

Willingness to pay for a 4% chlorhexidine (7.1% chlorhexidine digluconate) product for umbilical cord care in rural Bangladesh: a contingency valuation study.

BACKGROUND: Recent trials in Bangladesh, Nepal, and Pakistan have shown that chlorhexidine is an effective antiseptic for umbilical cord care compared to existing community-based cord care practices. Because of the aggregate reduction in neonatal mortality in these trials, interest is high in introducing a 7.1% chlorhexidine digluconate liquid or gel that delivers 4% chlorhexidine for umbilical cord care in Bangladesh and elsewhere. METHODS: In 2010, we conducted a household survey applying a contingent valuation method with 1717 eligible couples (pregnant women or women with a first child younger than 6 months old, and their husbands) in the rural subdistricts of Abhoynagar and Mirsarai in Bangladesh to assess their willingness to pay for three types of umbilical cord care products at different price points. Each respondent was asked about willingness to pay prefixed prices for any one of three 7.1% chlorhexidine digluconate products: 1) a single-dose liquid, 2) a multi-dose liquid, or 3) a gel formulation. Each also reported the maximum price they were independently willing to pay for their selected product. We compared participant willingness-to-pay responses to the prefixed prices with their independently reported maximum prices for each type of the product separately. The comparison identified to what extent the respondents' positive responses to the prefixed prices matched their independently reported maximum prices. RESULTS: This cross matching revealed that willingness to pay the prefixed prices was 41% for the single-dose liquid, 33% for the multi-dose liquid, and 31% for the gel formulation. Although the majority of the respondents were unwilling to pay the prefixed prices, all were willing to pay some amount and reported they could borrow money if necessary. Subsequent analysis of responses to the multi-dose liquid showed borrowing money would not be required if the unit price was Bangladeshi taka 15-25. CONCLUSIONS: A unit price of Bangladeshi taka 15-25 (US$0.21-0.35) for multi-dose 7.1% chlorhexidine digluconate liquid would be affordable to the primary target population in Bangladesh. Although a large market demand could be generated if the product were available at this price point, subsidization may be required to achieve optimal coverage, especially among poorer families.

Economic evaluation of chlorhexidine cloths on healthcare costs due to surgical site infections following total knee arthroplasty.

The purpose of this study was to evaluate the overall annual healthcare cost savings of adding a pre-operative chlorhexidine cloth preparation protocol. We used reports from the National Healthcare Safety Network and previously published reports to determine a range of surgical site infection rates following total knee arthroplasty and the cost per revision procedure. The savings listed are potential, but may be less. The cost benefit of using chlorhexidine at our institution per 1,000 total knee arthroplasty patients was a net savings of approximately $2.1 million. The annual healthcare savings ranged from $0.78 to $3.18 billion. This epidemiologic evaluation of using chlorhexidine prior to undergoing total knee arthroplasty has demonstrated the potential to decrease healthcare costs primarily by decreasing the incidence of surgical site infections.

Economic evaluation of chlorhexidine-impregnated sponges for preventing catheter-related infections in critically ill adults in the Dressing Study.

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.

Preoperative chlorhexidine preparation and the incidence of surgical site infections after hip arthroplasty.

The purpose of this study was to evaluate effectiveness of an advance, at-home chlorhexidine-impregnated skin preparation cloth in decreasing the incidence of deep periprosthetic hip arthroplasty infections. Arthroplasty surgeons at the senior author's institution provided their patients with chlorhexidine-impregnated single-use cloths for use at home the night before and the morning of surgery. Between January 2007 and December 2009, the compliance of this practice, as well as the incidence of periprosthetic infections, was monitored for all patients who underwent hip arthroplasty. Of the 1134 patients who underwent hip arthroplasty, 157 patients completely complied with the preoperative chlorhexidine preparation protocol. There were 14 infections in the group that was not compliant (1.6% infection rate), and there were no infections in the compliant patient population. Based on the results of this study, at-home preoperative patient skin preparation appears to be a simple and cost-effective method to reduce periprosthetic hip infection rates.

[Surgical team satisfaction levels between two preoperative hand-washing methods]. / Niveles de satisfacción del equipo quiúirgico entre dos métodos de lavado de mano.

INTRODUCTION: Recently, there have been new antiseptics for surgical scrub that do not require brushing. One of them contains 1% chlorhexidine gluconate and 61% ethyl alcohol; within its benefits, it may offer a low potential for skin sensitization, as well as cost savings and less use of water. OBJECTIVES: To evaluate satisfaction levels, washing time, safety, cost and amount of water between the traditional surgical scrub technique (group A) and brush-free surgical scrub procedure (group B). MATERIAL AND METHODS: One hundred clean and clean-contaminated surgeries with four hundred members of surgical teams were included. Satisfaction levels, hand-washing time, skin disorders and problems associated with placement of gloves were evaluated. Hands cultures were taken in 20% of the population and the amount of water used by patients in group A was measured. Total costs and wound infections were analyzed. RESULTS: Satisfaction scale in group A was 9.1 +/- 1.39 and 9.5 +/- 1.54 in group B (p = 0.004). The mean hand-washing time was 3.9 +/- 1.07 min in group A and 2.0 +/- 0.47 min in group B (p = 0.00001). Thirteen patients had dry skin in group A and four in group B (6.5% vs. 2%; p = 0.02). There were ten positives cultures in group A and five in group B (25% vs. 12.5%, p = 0.152). Wound infection rate was 3%. On average, five-hundred eighty liters of water were used by the former group, and the estimated hand-washing cost was lower in the second group. CONCLUSIONS: The handwashing technique with CGEA is as effective as traditional surgical scrub technique, and it is associated with less washing time, dry skin, cost and use of water.

Association Between Eliminating Water From Surgical Hand Antisepsis at a Large Ophthalmic Surgical Hospital and Cost.

Importance: Alcohol-based surgical scrub is recommended for presurgical antisepsis by leading health organizations. Despite this recommendation, water-based scrub techniques remain common practice at many institutions. Objective: To calculate the potential financial savings that a large, subspecialty ophthalmic surgical center can achieve with a conversion to waterless surgical hand preparation. Design, Setting, and Participants: A review of accounting records associated with the purchase of scrubbing materials and water company invoices was conducted to assess direct costs attributable to water consumption and scrub materials for brushless, alcohol-based surgical scrub and water-based presurgical scrub. The flow rate of scrub sinks to estimate water consumption per year was tested. Savings associated with operating room (OR) and personnel time were calculated based on the prescribed scrub times for waterless techniques vs traditional running-water techniques. The study was conducted from January 5 to March 1, 2019. Main Outcomes and Measures: The primary outcomes for this study were the quantity of water consumed by aqueous scrubbing procedures as well as the cost differences between alcohol-based surgical scrub and water-based scrub procedures per OR per year. Results: Scrub sinks consumed 15.9 L of water in a 2-minute period, projecting a savings of 61 631 L and $277 in water and sewer cost per operating room per year. Alcohol-based surgical scrub cost $1083 less than aqueous soap applied from wall-mounted soap dispensers and $271 less than preimpregnated scrub brushes per OR per year in supply costs. The decrease in scrub time from adopting waterless scrub technique could save between approximately $280 000 and $348 000 per OR per year. Conclusions and Relevance: Adopting waterless scrub techniques has the potential for economic savings attributable to water. Savings may be larger for surgical facilities performing more personnel-intensive procedures.

Cost-effectiveness of an experimental caries-control regimen in a 3.4-yr randomized clinical trial among 11-12-yr-old Finnish schoolchildren.

The aim of this study was to assess the cost-effectiveness of an experimental caries-control regimen in a randomized clinical trial (RCT) conducted in Pori, Finland, in 2001-2005. Children (n = 497) who were 11-12 yr of age and had at least one active initial caries lesion at baseline were studied. The children in the experimental group (n = 250) were offered an individually designed patient-centered regimen for caries control. The children in the control group (n = 247) received standard dental care. Furthermore, the whole population was exposed to continuous community-level oral health promotion. Individual costs of treatment procedures and outcomes (DMFS increment score) for the follow-up period of 3.4 yr were calculated for each child in both groups. The incremental cost-effectiveness ratio was euro 34.07 per averted DMF surface. The experimental regimen was more effective, and also more costly. However, the total costs decreased year after year, and for the last 2 yr the experimental regimen was less expensive than the standard dental care. The experimental regimen would probably have been more cost-effective than standard dental care if the follow-up period had been longer, the regimen less comprehensive, and/or if dental nurses had conducted the preventive procedures.

You get back what you give: Decreased hospital infections with improvement in CHG bathing, a mathematical modeling and cost analysis.

BACKGROUND: Multiple studies have shown that bathing with chlorhexidine gluconate (CHG) wipes reduces hospital-acquired infections (HAIs). We employed a mathematical model to assess the impact of CHG patient bathing on central line-associated bloodstream infections (CLABSIs), catheter-associated urinary tract infections (CAUTIs), and hospital-onset Clostridium difficile (C diff) infections and the associated costs. METHODS: Using a Markov chain, we examined the effect of CHG bathing compliance on HAI outcomes and the associated costs. Using estimates from 2 different studies on CHG bathing effectiveness for CLABSI, CAUTI, and C diff, the number of HAIs per year were estimated along with associated costs. The simulations were conducted, assuming CHG bathing at varying compliance rates. RESULTS: At 32% reduction in HAI incidence, increasing CHG bathing compliance from 60% to 90% results in 20 averted infections and $815,301.75 saved cost. CONCLUSIONS: As CHG bathing compliance increases, yearly HAIs decrease, and the overall cost associated with the HAIs also decreases.

A cost-effectiveness analysis of mupirocin and chlorhexidine gluconate for Staphylococcus aureus decolonization prior to hip and knee arthroplasty in Alberta, Canada compared to standard of care.

Background: While decolonization of Staphylococcus aureus reduces surgical site infection (SSI) rates following hip and knee arthroplasty, its cost-effectiveness is uncertain. We sought to examine the cost-effectiveness of a decolonization protocol for Staphylococcus aureus prior to hip and knee replacement in Alberta compared to standard care - no decolonization. Methods: Decision analytic models and a probabilistic sensitivity analysis were used for a cost-effectiveness analysis, with the effectiveness of decolonization based on a large published pre- and post- intervention trial. The primary outcomes of the models were infections prevented and health care costs. We modelled the cost-effectiveness of decolonization in a hypothetical cohort of adult patients undergoing hip and knee replacement in Alberta, Canada. Information on the incidence of complex surgical site infections (SSIs), as well as the cost of care for patients with and without SSIs was taken from a provincial infection control database, and health administrative data. Results: Use of the decolonization bundle was cost saving compared to usual care ($153/person), and resulted in 16 complex Staphylococcus aureus SSIs annually as opposed to 32 (with approximately 8000 hip or knee arthroplasties performed). The probabilistic sensitivity analysis demonstrated that the majority (84%) of the time the decolonization bundle was cost saving. The model was robust to one-way sensitivity analyses conducted within plausible ranges. There were small upfront costs associated with using a decolonization protocol, however, this model demonstrated cost savings over one year. In a Markov model that considered the impact of a decolonization bundle over a lifetime as it pertained to the need for subsequent joint replacements and patient quality of life, the bundle still resulted in cost savings ($161/person). Conclusions: Decolonization for Staphylococcus aureus prior to hip and knee replacements resulted in cost savings and fewer SSIs, and should be considered prior to these procedures.

Cost effectiveness of dressing in the prevention of catheter-related infection in critically ill patients.

INTRODUCTION: Catheter-related infection is a complication of high morbimortality. The aim was to perform a cost-effectiveness analysis of gauze and medical tape, transparent semi-permeable and chlorhexidine-impregnated dressings for short-term central venous catheter, within the Brazilian Public Healthcare System (Sistema Único de Saúde - SUS) scenario. METHODOLOGY: a decision tree was elaborated in order to evaluate the cost-effectiveness of dressings in the prevention of catheter-related infection in critically ill patients. The outcome was the probability of catheter-related infections prevention. Moreover, only direct medical expenses were considered. Sensitivity analyses were performed to evaluate the model uncertainties. RESULTS: Chlorhexidine-impregnated dressing presented higher cost-effectiveness when the base case was analyzed (cost of US$ 655 per case prevented, 99% of effectiveness), in comparison to gauze and medical tape dressing (US$ 696, effectiveness of 96%). Dressing changes performed before the recommended period, treatment performed exclusively in inpatient units and high effectiveness of gauze and medical tape dressing were variables that interfered with the results. The probability of death has also demonstrated to have a major impact on cost-effectiveness. CONCLUSION: In the context of a Brazilian public hospital, the chlorhexidine-impregnated dressing presented higher cost-effectiveness when compared to the gauze and medical tape dressing or the transparent semi-permeable dressing.

Cost-effectiveness of pre-operative Staphylococcus aureus screening and decolonization.

OBJECTIVE: We developed a decision analytic model to evaluate the impact of a preoperative Staphylococcus aureus decolonization bundle on surgical site infections (SSIs), health-care-associated costs (HCACs), and deaths due to SSI. METHODS: Our model population comprised US adults undergoing elective surgery. We evaluated 3 self-administered preoperative strategies: (1) the standard of care (SOC) consisting of 2 disinfectant soap showers; (2) the "test-and-treat" strategy consisting of the decolonization bundle including chlorhexidine gluconate (CHG) soap, CHG mouth rinse, and mupirocin nasal ointment for 5 days) if S. aureus was found at any of 4 screened sites (nasal, throat, axillary, perianal area), otherwise the SOC; and (3) the "treat-all" strategy consisting of the decolonization bundle for all patients, without S. aureus screening. Model parameters were derived primarily from a randomized controlled trial that measured the efficacy of the decolonization bundle for eradicating S. aureus. RESULTS: Under base-case assumptions, the treat-all strategy yielded the fewest SSIs and the lowest HCACs, followed by the test-and-treat strategy. In contrast, the SOC yielded the most SSIs and the highest HCACs. Consequently, relative to the SOC, the average savings per operation was $217 for the treat-all strategy and $123 for the test-and-treat strategy, and the average savings per per SSI prevented was $21,929 for the treat-all strategy and $15,166 for the test-and-treat strategy. All strategies were sensitive to the probability of acquiring an SSI and the increased risk if SSI if the patient was colonized with SA. CONCLUSION: We predict that the treat-all strategy would be the most effective and cost-saving strategy for preventing SSIs. However, because this strategy might select more extensively for mupirocin-resistant S. aureus and cause more medication adverse effects than the test-and-treat approach or the SOC, additional studies are needed to define its comparative benefits and harms.

Cost-effectiveness analysis of chlorhexidine-alcohol versus povidone iodine-alcohol solution in the prevention of intravascular-catheter-related bloodstream infections in France.

OBJECTIVE: To perform a cost-effectiveness analysis of skin antiseptic solutions (chlorhexidine-alcohol (CHG) versus povidone iodine-alcohol solution (PVI)) for the prevention of intravascular-catheter-related bloodstream infections (CRBSI) in intensive care unit (ICU) in France based on an open-label, multicentre, randomised, controlled trial (CLEAN). DESIGN: A 100-day time semi-markovian model was performed to be fitted to longitudinal individual patient data from CLEAN database. This model includes eight health states and probabilistic sensitivity analyses on cost and effectiveness were performed. Costs of intensive care unit stay are based on a French multicentre study and the cost-effectiveness criterion is the cost per patient with catheter-related bloodstream infection avoided. PATIENTS: 2,349 patients (age≥18 years) were analyzed to compare the 1-time CHG group (CHG-T1, 588 patients), the 4-time CHG group (CHG-T4, 580 patients), the 1-time PVI group (PVI-T1, 587 patients), and the 4-time PVI group (PVI-T4, 594 patients). INTERVENTION: 2% chlorhexidine-70% isopropyl alcohol (chlorhexidine-alcohol) compared to 5% povidone iodine-69% ethanol (povidone iodine-alcohol). RESULTS: The mean cost per alive, discharged or dead patient was of €23,798 (95% confidence interval: €20,584; €34,331), €21,822 (€18,635; €29,701), €24,874 (€21,011; €31,678), and €24,201 (€20,507; €29,136) for CHG-T1, CHG-T4, PVI-T1, and PVI-T4, respectively. The mean number of patients with CRBSI per 1000 patients was of 3.49 (0.42; 12.57), 6.82 (1.86; 17.38), 26.04 (14.64; 42.58), and 23.05 (12.32; 39.09) for CHG-T1, CHG-T4, PVI-T1, and PVI-T4, respectively. In comparison to the 1-time PVI solution, the 1-time CHG solution avoids 22.55 CRBSI /1,000 patients, and saves €1,076 per patient. This saving is not statistically significant at a 0.05 level because of the overlap of 95% confidence intervals for mean costs per patient in each group. Conversely, the difference in effectiveness between the CHG-T1 solution and the PVI-T1 solution is statistically significant. CONCLUSIONS: The CHG-T1 solution is more effective at the same cost than the PVI-T1 solution. CHG-T1, CHG-T4 and PVI-T4 solutions are statistically comparable for cost and effectiveness. This study is based on the data from the RCT from 11 French intensive care units registered with www.clinicaltrials.gov (NCT01629550).