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Widmer AF, Atkinson A, Kuster SP, Wolfensberger A, Klimke S, Sommerstein R, Eckstein FS, Schoenhoff F, Beldi G, Gutschow CA, Marschall J, Schweiger A, Jent P. Povidone Iodine vs Chlorhexidine Gluconate in Alcohol for Preoperative Skin Antisepsis: A Randomized Clinical Trial. JAMA 2024; 332:541-549. [PMID: 38884982 PMCID: PMC11184497 DOI: 10.1001/jama.2024.8531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 04/22/2024] [Indexed: 06/18/2024]
Abstract
Importance Preoperative skin antisepsis is an established procedure to prevent surgical site infections (SSIs). The choice of antiseptic agent, povidone iodine or chlorhexidine gluconate, remains debated. Objective To determine whether povidone iodine in alcohol is noninferior to chlorhexidine gluconate in alcohol to prevent SSIs after cardiac or abdominal surgery. Design, Setting, and Participants Multicenter, cluster-randomized, investigator-masked, crossover, noninferiority trial; 4403 patients undergoing cardiac or abdominal surgery in 3 tertiary care hospitals in Switzerland between September 2018 and March 2020 were assessed and 3360 patients were enrolled (cardiac, n = 2187 [65%]; abdominal, n = 1173 [35%]). The last follow-up was on July 1, 2020. Interventions Over 18 consecutive months, study sites were randomly assigned each month to either use povidone iodine or chlorhexidine gluconate, each formulated in alcohol. Disinfectants and skin application processes were standardized and followed published protocols. Main Outcomes and Measures Primary outcome was SSI within 30 days after abdominal surgery and within 1 year after cardiac surgery, using definitions from the US Centers for Disease Control and Prevention's National Healthcare Safety Network. A noninferiority margin of 2.5% was used. Secondary outcomes included SSIs stratified by depth of infection and type of surgery. Results A total of 1598 patients (26 cluster periods) were randomly assigned to receive povidone iodine vs 1762 patients (26 cluster periods) to chlorhexidine gluconate. Mean (SD) age of patients was 65.0 years (39.0-79.0) in the povidone iodine group and 65.0 years (41.0-78.0) in the chlorhexidine gluconate group. Patients were 32.7% and 33.9% female in the povidone iodine and chlorhexidine gluconate groups, respectively. SSIs were identified in 80 patients (5.1%) in the povidone iodine group vs 97 (5.5%) in the chlorhexidine gluconate group, a difference of 0.4% (95% CI, -1.1% to 2.0%) with the lower limit of the CI not exceeding the predefined noninferiority margin of -2.5%; results were similar when corrected for clustering. The unadjusted relative risk for povidone iodine vs chlorhexidine gluconate was 0.92 (95% CI, 0.69-1.23). Nonsignificant differences were observed following stratification by type of surgical procedure. In cardiac surgery, SSIs were present in 4.2% of patients with povidone iodine vs 3.3% with chlorhexidine gluconate (relative risk, 1.26 [95% CI, 0.82-1.94]); in abdominal surgery, SSIs were present in 6.8% with povidone iodine vs 9.9% with chlorhexidine gluconate (relative risk, 0.69 [95% CI, 0.46-1.02]). Conclusions and Relevance Povidone iodine in alcohol as preoperative skin antisepsis was noninferior to chlorhexidine gluconate in alcohol in preventing SSIs after cardiac or abdominal surgery. Trial Registration ClinicalTrials.gov Identifier: NCT03685604.
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Affiliation(s)
- Andreas F. Widmer
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Andrew Atkinson
- Pediatric Research Centre, University Children’s Hospital Basel, Basel, Switzerland
- Division of Infectious Diseases, Department of Internal Medicine, Washington University School of Medicine in St. Louis, St Louis, Missouri
| | - Stefan P. Kuster
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Aline Wolfensberger
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Steffi Klimke
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Rami Sommerstein
- Department of Infectious Diseases, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland
- Department of Health Science and Medicine, University of Lucerne, Lucerne, Switzerland
| | - Friedrich S. Eckstein
- Department of Cardiac Surgery, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Florian Schoenhoff
- Department of Cardiac Surgery, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland
| | - Guido Beldi
- Department of Visceral Surgery and Medicine, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland
| | - Christian A. Gutschow
- Department of Visceral and Transplantation Surgery, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Jonas Marschall
- Division of Infectious Diseases, Department of Internal Medicine, Washington University School of Medicine in St. Louis, St Louis, Missouri
- Department of Infectious Diseases, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland
| | | | - Philipp Jent
- Department of Infectious Diseases, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland
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Eder M, Sommerstein R, Szelecsenyi A, Schweiger A, Schlegel M, Atkinson A, Kuster SP, Vuichard-Gysin D, Troillet N, Widmer AF. Association between the introduction of a national targeted intervention program and the incidence of surgical site infections in Swiss acute care hospitals. Antimicrob Resist Infect Control 2023; 12:134. [PMID: 37996935 PMCID: PMC10668371 DOI: 10.1186/s13756-023-01336-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023] Open
Abstract
BACKGROUND In Switzerland, the national surgical site infection (SSI) surveillance program showed a modest decrease in SSI rates for different procedures over the last decade. The study aimed to determine whether a multimodal, targeted intervention program in addition to existing SSI surveillance is associated with decreased SSI rates in the participating hospitals. METHODS Prospective multicenter pre- and postintervention study conducted in eight Swiss acute care hospitals between 2013 and 2020. All consecutive patients > 18 years undergoing cardiac, colon, or hip/knee replacement surgery were included. The follow-up period was 30 days and one year for implant-related surgery. Patients with at least one follow-up were included. The intervention was to optimize three elements of preoperative management: (i) hair removal; (ii) skin disinfection; and (iii) perioperative antimicrobial prophylaxis. We compared SSI incidence rates (main outcome measure) pre- and postintervention (three years each) adjusted for potential confounders. Poisson generalized linear mixed models fitted to quarter-yearly confirmed SSIs and adjusted for baseline differences between hospitals and procedures. Adherence was routinely monitored through on-site visits. RESULTS A total of 10 151 patients were included, with a similar median age pre- and postintervention (69.6 and IQR 60.9, 76.8 years, vs 69.5 and IQR 60.4, 76.8 years, respectively; P = 0.55) and similar proportions of females (44.8% vs. 46.1%, respectively; P = 0.227). Preintervention, 309 SSIs occurred in 5 489 patients (5.6%), compared to 226 infections in 4 662 cases (4.8%, P = 0.09) postintervention. The adjusted incidence rate ratio (aIRR) for overall SSI after intervention implementation was 0.81 (95% CI, 0.68 to 0.96, P = 0.02). For cardiac surgery (n = 2 927), the aIRR of SSI was 0.48 (95% CI, 0.32 to 0.72, P < 0.001). For hip/knee replacement surgery (n = 4 522), the aIRR was 0.88 (95% CI, 0.52 to 1.48, P = 0.63), and for colon surgery (n = 2 702), the aIRR was 0.92 (95% CI, 0.75 to 1.14, P = 0.49). CONCLUSIONS The SSI intervention bundle was associated with a statistically significant decrease in SSI cases. A significant association was observed for cardiac surgery. Adding a specific intervention program can add value compared to routine surveillance only. Further prevention modules might be necessary for colon and orthopedic surgery.
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Affiliation(s)
- Marcus Eder
- Swissnoso, the National Center for Infection Control, Bern, Switzerland
| | - Rami Sommerstein
- Swissnoso, the National Center for Infection Control, Bern, Switzerland.
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Bern, Switzerland.
- Faculty of Health Sciences and Medicine, University of Lucerne, Lucerne, Switzerland.
| | | | - Alexander Schweiger
- Swissnoso, the National Center for Infection Control, Bern, Switzerland
- Department of Medicine and Infectious Diseases, Cantonal Hospital Zug, Zug, Switzerland
| | - Matthias Schlegel
- Swissnoso, the National Center for Infection Control, Bern, Switzerland
- Department of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St Gallen, St Gallen, Switzerland
| | - Andrew Atkinson
- Division of Infectious Diseases, Washington University in St. Louis School of Medicine, St. Louis, MO, USA
| | - Stefan P Kuster
- Department of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St Gallen, St Gallen, Switzerland
| | - Danielle Vuichard-Gysin
- Swissnoso, the National Center for Infection Control, Bern, Switzerland
- Infectious Diseases, Thurgau Hospital Group, Muensterlingen and Frauenfeld, Switzerland
| | - Nicolas Troillet
- Swissnoso, the National Center for Infection Control, Bern, Switzerland
- Service of Infectious Diseases, Central Institute, Valais Hospitals, Sion, Switzerland
| | - Andreas F Widmer
- Swissnoso, the National Center for Infection Control, Bern, Switzerland
- Department of Infectious Diseases, University Hospital Basel, Basel, Switzerland
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Widmer D, Widmer AF, Jeger R, Dangel M, Stortecky S, Frei R, Conen A. Prevalence of enterococcal groin colonization in patients undergoing cardiac interventions: Challenging antimicrobial prophylaxis with cephalosporins in TAVR patients. J Hosp Infect 2022; 129:198-202. [DOI: 10.1016/j.jhin.2022.07.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/17/2022] [Accepted: 07/25/2022] [Indexed: 11/29/2022]
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Transitory Shifts in Skin Microbiota Composition and Reductions in Bacterial Load and Psoriasin following Ethanol Perturbation. mSphere 2022; 7:e0017122. [PMID: 35727021 PMCID: PMC9429936 DOI: 10.1128/msphere.00171-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Personal care and hygiene regimens may substantially alter the composition of the skin microbiota through direct and indirect mechanisms. An understanding of the timescales of commensal skin microbiota reestablishment following perturbation is required to inform consumer safety risk assessment, and support product development. In the current investigation, the microbiota of the volar and dorsal forearm of 10 volunteers was sampled immediately before and after wiping with 70% ethanol and at up to 24 h afterwards. Quantitative PCR and amplicon sequencing were used to measure microbial load and composition, and concentrations of the antimicrobial peptide psoriasin were measured using an enzyme-linked immunosorbent assay (ELISA). Ethanol wiping significantly reduced the total bacterial abundance at 2 h post-wipe. Recovery was observed after 6 h for total bacterial populations and for Staphylococcus epidermidis depending on the site tested. Microbiome diversity recovered by 6 h after wiping. Psoriasin concentrations were highly variable between volunteers, ranging from 42 to 1,569 ng/mL, and dorsal concentrations were significantly higher than volar concentrations (P < 0.05). For most of the volunteers, the application of ethanol decreased psoriasin concentrations, particularly for the dorsal samples, but the overall effect was not significant. This work extends observations of skin microbiome stability and demonstrates resilience in a key antimicrobial peptide. IMPORTANCE An understanding of the timescales of commensal skin microbiota reestablishment following perturbation is required to inform consumer safety risk assessment and support product development. Following ethanol exposure, total bacterial populations and microbiome diversity recovered after 6 h. For most of the volunteers, the application of ethanol decreased psoriasin concentrations, but the overall effect was not significant. This work extends observations of skin microbiome stability and demonstrates resilience in a key antimicrobial peptide.
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Bright R, Hayles A, Fernandes D, Visalakshan RM, Ninan N, Palms D, Burzava A, Barker D, Brown T, Vasilev K. In Vitro Bactericidal Efficacy of Nanostructured Ti6Al4V Surfaces is Bacterial Load Dependent. ACS APPLIED MATERIALS & INTERFACES 2021; 13:38007-38017. [PMID: 34374279 DOI: 10.1021/acsami.1c06919] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The demand for medical implants globally has increased significantly due to an aging population amongst other reasons. Despite the overall increase in the survivorship of Ti6Al4V implants, implant infection rates are increasing due to factors such as diabetes, obesity, and bacterial resistance to antibiotics. Two commonly found bacteria implicated in implant infections are Staphylococcus aureus and Pseudomonas aeruginosa. Based on prior work that showed nanostructured surfaces might have potential in passively killing these bacterial species, we developed a hierarchical, hydrothermally etched, nanostructured titanium surface. To evaluate the antibacterial efficacy of this surface, etched and as-received surfaces were inoculated with S. aureus or P. aeruginosa at concentrations ranging from 102 to 109 colony-forming units per disc. Live/dead staining revealed there was a 60% decrease in viability for S. aureus and greater than a 98% decrease for P. aeruginosa on etched surfaces at the lowest inoculum of 102 CFU/disc, when compared to the control surface. Bactericidal efficiency decreased with increasing bacterial concentrations in a stepwise manner, with decreases in bacterial viability noted for S. aureus above 105 CFU/disc and above 106 CFU/disc for P. aeruginosa. Surprisingly, biofilm depth analysis revealed a decrease in bacterial viability in the 2 μm layer furthest from the nanostructured surface. The nanostructured Ti6Al4V surface developed here holds the potential to reduce the rate of implant infections.
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Affiliation(s)
- Richard Bright
- STEM, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
| | - Andrew Hayles
- STEM, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
| | - Daniel Fernandes
- STEM, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
| | - Rahul M Visalakshan
- STEM, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
| | - Neethu Ninan
- STEM, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
| | - Dennis Palms
- STEM, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
| | - Anouck Burzava
- STEM, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
| | - Dan Barker
- Corin Australia, Baulkham Hills, NSW 2153, Australia
| | - Toby Brown
- Corin Australia, Baulkham Hills, NSW 2153, Australia
| | - Krasimir Vasilev
- STEM, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
- Future Industries Institute, University of South Australia, Mawson Lakes, Adelaide, South Australia 5095, Australia
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