Infection Control Lecture
KFHU Healthcare Infection Control 2004
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The Infection Control Team
Infection Control Committee Chairman: Dr. Huda Bukhari Infection Control Associate Director: Mrs. Basmah Al Marzooq Infection Control Nurse: Mrs. Juanita S. Changco
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How Else Can HCWs Reduce Risks to Patients?
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DEFINITION OF TERMS
Antiseptic – A chemical germicide formulated for use on living tissue. Disinfectant – A chemical germicide formulated for use on nonliving items. Sterile – Completely free of all micro-organisms. Cleaning – Removal of foreign material from an item. This usually involves friction and washing with a detergent or disinfectant to remove contamination, followed by rinsing and thorough drying. Sterilization – A procedure that kills all bacteria (including large numbers of endospores), fungi and viruses. Operationally, sterilization is a process that results in a probability of a microorganism surviving on an item of less than 1 in 1 million (1x10-6). Decontamination – A process that renders a contaminated item 13 safe 10/22/08 to handle (reasonably free from the likelihood of
CHARACTERISTICS OF ANTISEPTIC AGENTS Group and subgroup
Alcohols
Grampositive bacteria
Gramnegativ e bacteri a
Mycobacterium tuberculosi s
Excellent
Excellent
Excellent
Fungi
Virus
Excelle nt
Excelle nt
Speed of killing sensitive bacteria
Inactivated by mucus or protein
Fast
Moderat e
Comments
Optimum strength 70% to 90% with added emolients (glycerine or cetyl alcohol is less drying), not recommended for physical cleaning of skin; good for hand antisepsis and for surgical site preparation. Optimum concentration 60%95%; no persistent activity Chlorhexidine Excellent Good Fair Fair Excelle IntermeMinimal Has persistent effect; good for 2% and 4% nt diate both hand washing and aqueous surgical site or preoperative patietn skin preparation; do not use near mucous membranes; toxic effects on ears and eyes reported; activity neutralized by noniomic surfactants. Persistent activity; rare allergic reactions Note: +++ Excellent; ++ Good but nodes not include the entire spectrum; + Fair; - no activity or not sufficient. Hexachlorophene is not included because it is no longer an accepted ingredient of hand disinfectants. * Activity improved by addition of chelating agent such as EDTA. Some of these agents, such as iodine or chlorhexidine are combined with alcohol to form tinctures and are available in the combined formulation.
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CHARACTERISTICS OF ANTISEPTIC AGENTS (cont’d) Group and subgroup
Grampositive bacteria
Gramnegativ e bacteri a
Mycobacterium tuberculosi s
HexachloroPhene 3% aqueous
Good
Poor
Poor
Poor
Iodine compounds, iodine in alcohol
Excellent
Excellent
Excellent
Iodophors
Excellent
Excellent
Fair
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Speed of killing sensitive bacteria
Inactivated by mucus or protein
Poor
Slow
Minimal
Good
Excelle nt
Intermediate
Marked
Good
Good
Intermediate
Moderat e
Fungi
Virus
Comments
Provides persistent, cumulative activity after repeated use (washing with alcohol reduces persistent action), can be toxic when absorbed from skin especially in premature infants; good for hand washing but not for surgical site preparation; limited spectrum of Causes skin”burns,” antimicrobial activity.but this is unusual with 1% tincture, especially if it is removed after several minutes; too irritating for hand washing but excellent for surgical site preparation.` Less irritating to the skin than iodine; good for both hand washing and surgical site preparation; rapidly neutralized in presence of organic materials such as blood or sputum
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CHARACTERISTICS OF ANTISEPTIC AGENTS (cont’d) Group and subgroup
Grampositive bacteria
Gramnegativ e bacteri a
Mycobacterium tuberculosi s
Para-chlorometa-xylenol (PCMX)
Good
Fair*
Fair
Fair
Phenol derivatives
Excellent
Fair
Fair
Fair
Triclosan
Excellent
Good
Fair
Quaternary ammonium compounts
Fair
Good
-
Fungi
-
Speed of killing sensitive bacteria
Inactivated by mucus or protein
Fair
Intermediate
Minimal
Fair
Intermediate
Excelle nt
Intermediate
Fair
Slow
Virus
Comments
Activity neutralized by nonionic surfactants. ِActivity neutralized by nonionic surfactants
Minimal
Acceptability on hands varies Used only in combination with alcohols; ecologic concerns
Note: Excellent; Good but nodes not include the entire spectrum; Fair; - no activity or not sufficient. Hexachlorophene is not included because it is no longer an accepted ingredient of hand disinfectants. * Activity improved by addition of chelating agent such as EDTA. Some of these agents, such as iodine or chlorhexidine are combined with alcohol to form tinctures and are available in the combined formulation.
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Any Questions???
Thank you for not asking!!!
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