Chlorhexidine Patient Chlorhexidine Patient Bathing as a Means to Bathing as a Means to Prevent Healthcare Prevent Healthcare Associated Infections Associated Infections Mark E. Rupp, MD Mark E. Rupp, MD Professor & Chief, Infectious Diseases Professor & Chief, Infectious Diseases Director, Infection Control & Epidemiology Director, Infection Control & Epidemiology University of Nebraska Medical Center University of Nebraska Medical Center Hosted by Martin Hosted by Martin Kiernan Kiernan [email protected][email protected]www.webbertraining.com April 17, 201
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Chlorhexidine Patient Bathing as a Means to Prevent Healthcare Associated Infections Mark E. Rupp, MD Professor & Chief, Infectious Diseases Director,
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Chlorhexidine Patient Chlorhexidine Patient Bathing as a Means to Bathing as a Means to Prevent Healthcare Prevent Healthcare Associated InfectionsAssociated Infections
Mark E. Rupp, MDMark E. Rupp, MDProfessor & Chief, Infectious DiseasesProfessor & Chief, Infectious Diseases
Director, Infection Control & EpidemiologyDirector, Infection Control & EpidemiologyUniversity of Nebraska Medical CenterUniversity of Nebraska Medical Center
Hosted by Martin KiernanHosted by Martin [email protected]@webbertraining.com
www.webbertraining.com April 17, 2014
Potential Conflicts of Potential Conflicts of InterestInterest
Dr Rupp reports the following Dr Rupp reports the following pertinent potential conflicts of pertinent potential conflicts of interest:interest: Prior research support in the form of Prior research support in the form of
contracts to UNMC from 3M & contracts to UNMC from 3M & MolnlyckeMolnlycke
Consultant or Advisory Board for 3M & Consultant or Advisory Board for 3M & Molnlycke Molnlycke
ObjectivesObjectives
At the conclusion of this program the At the conclusion of this program the participant should:participant should:Have a better understanding of the antiseptic Have a better understanding of the antiseptic activity of chlorhexidine gluconate (CHG)activity of chlorhexidine gluconate (CHG)Be able to introduce a program of CHG patient Be able to introduce a program of CHG patient bathing in a targeted or general mannerbathing in a targeted or general mannerUnderstand the pros and cons of CHG patient Understand the pros and cons of CHG patient bathing bathing
Horizontal vs Vertical Infection Horizontal vs Vertical Infection Prevention InterventionsPrevention Interventions
Intervention that affects Intervention that affects narrow group of patients narrow group of patients (eg. Active surveillance (eg. Active surveillance cultures for MRSA) vs cultures for MRSA) vs intervention that cuts intervention that cuts across lines and affects across lines and affects numerous patient numerous patient groups (eg. Hand groups (eg. Hand Hygiene) Hygiene)
Cationic bisbiguanide first synthesized in England Cationic bisbiguanide first synthesized in England in 1950 during search for antimalarial drugsin 1950 during search for antimalarial drugs
Mechanism of Action: Mechanism of Action: Rapid attraction to negatively-charged bacterial cellRapid attraction to negatively-charged bacterial cell Adsorption to phosphate-containing constituents of the Adsorption to phosphate-containing constituents of the
bacterial surfacebacterial surface Attraction to cytoplasmic membranesAttraction to cytoplasmic membranes Leakage of low-MW cytoplasmic components (KLeakage of low-MW cytoplasmic components (K++, Ca, Ca++++)) Inhibition of membrane-bound enzymes (Adenosyl Inhibition of membrane-bound enzymes (Adenosyl
triphosphatase)triphosphatase) Precipitation of cytoplasmPrecipitation of cytoplasm
Timsit, et al. JAMA, 301:1231-41, 2009Timsit, et al. JAMA, 301:1231-41, 2009 Timsit, et al. Am J Respir Crit Care Med. Timsit, et al. Am J Respir Crit Care Med.
Effect on Effect on C difficile C difficile was unexpected:was unexpected: Bactericidal vs vegetative cellsBactericidal vs vegetative cells Inhibits spore germinationInhibits spore germination Bed bath and physical removal of Bed bath and physical removal of
spores (was effect of study simply to spores (was effect of study simply to improve bathing?); Decreased improve bathing?); Decreased environmental contamination and environmental contamination and spread?spread?
Surfactant may aid removal of sporesSurfactant may aid removal of spores
DiscussionDiscussion Confounding?Confounding?
Laboratory diagnostic changesLaboratory diagnostic changes CDI control measuresCDI control measures
Isolation, hand hygiene, glove use, bleach cleaningIsolation, hand hygiene, glove use, bleach cleaning Antibiotic useAntibiotic use Seasonality (increases in winter) Seasonality (increases in winter)
Changes in Changes in C difficile C difficile strain typestrain type Study should be “hypothesis generating” Study should be “hypothesis generating”
and result in efforts to replicate our and result in efforts to replicate our experienceexperience
Future DirectionsFuture Directions
Does use of CHG result in selection Does use of CHG result in selection of qac(+) staphylococci and CHG of qac(+) staphylococci and CHG resistance?resistance?
What drives compliance with pt What drives compliance with pt bathing? bathing?
Cost effectiveness?Cost effectiveness?
Prospective, cluster-randomized study in 9 Prospective, cluster-randomized study in 9 ICUs involving 7727 patients, 6 mo crossover ICUs involving 7727 patients, 6 mo crossover
23% decrease in acquisition of MDROs (p= 23% decrease in acquisition of MDROs (p= 0.03)0.03)
28% decrease in bloodstream infections (P = 28% decrease in bloodstream infections (P = 0.007)0.007)
Feb 7, 2013
Prospective, cluster-randomized study in ICUs in 43 Prospective, cluster-randomized study in ICUs in 43 hospitals. Grp 1 - MRSA screening and isolation; Grp 2 hospitals. Grp 1 - MRSA screening and isolation; Grp 2 - Targeted decolonization; Grp 3 – Universal - Targeted decolonization; Grp 3 – Universal decolonization (mupirocin & CHG baths)decolonization (mupirocin & CHG baths)
HR for MRSA (intervention vs baseline): 0.92 vs 0.75 vs HR for MRSA (intervention vs baseline): 0.92 vs 0.75 vs 0.63 (P= 0.01)0.63 (P= 0.01)
HR for BSI (intervention vs baseline): 0.99 vs 0.78 vs HR for BSI (intervention vs baseline): 0.99 vs 0.78 vs 0.56 (P = <0.001)0.56 (P = <0.001)
susceptibility to CHGsusceptibility to CHG Prevalence surveys indicate qacA/B to be present in Prevalence surveys indicate qacA/B to be present in
0.5% - 80% of MRSA isolates.0.5% - 80% of MRSA isolates. MIC CHG ~4-8 ug/mL increases to 16-32 ug/mLMIC CHG ~4-8 ug/mL increases to 16-32 ug/mL Clinical Significance?Clinical Significance?
Elevated MIC remains well below clinical concentrationElevated MIC remains well below clinical concentration qacA/B + mupirocin R = persistent colonization (Lee et al, qacA/B + mupirocin R = persistent colonization (Lee et al,
CID, 2011)CID, 2011) CHG use selected for qacA/B (+) strains in ICU (Batra et al, CHG use selected for qacA/B (+) strains in ICU (Batra et al,
CID 2010)CID 2010)
Bath Basin ContaminationBath Basin Contamination
Bacterial contamination Bacterial contamination of simulated CHG bed of simulated CHG bed bath solutionbath solution
101088 cfu of cfu of E coli, S epi, E E coli, S epi, E facaelisfacaelis
Immediate and Residual Immediate and Residual experimentsexperiments
Rupp et al, ICHE 2013
Immediate
3 Hr Residual
Effective Infection Prevention is Effective Infection Prevention is a Multi-Piece Puzzlea Multi-Piece Puzzle
Education and TrainingEducation and Training Surveillance and ReportingSurveillance and Reporting Isolation and Source ControlIsolation and Source Control Elimination of Fomites Elimination of Fomites Insertion and Care of DevicesInsertion and Care of Devices Vaccination and PresenteeismVaccination and Presenteeism Environmental CleaningEnvironmental Cleaning Hand HygieneHand Hygiene CHG BathingCHG Bathing
April 24 (Free Teleclass) ARE WE TOO CLEAN FOR OUR OWN GOOD? THE HYGIENE
HYPOTHESIS AND ITS IMPLICATIONS FOR HYGIENE, LIFESTYLE, AND PUBLIC HEALTH
Dr. Sally Bloomfield, London School of Hygiene and Tropical Medicine
May 5 (Free ... WHO Teleclass – Europe) SPECIAL LECTURE FOR 5 MAY, 2014Prof. Didier Pittet, World Health Organization
May 8 VENTILATOR-ASSOCIATED EVENTS: A PATIENT SAFETY OPPORTUNITY
Dr. Michael Klompas, Harvard Medical School
May 13 (British Teleclass)VENTILATION IN HEALTHCARE FACILITIESDr. Peter Hoffman, Health Protection Agency, UK