Infection Control.

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Presentation transcript:

Infection Control

Infection Control Maintenance of high standards of infection control practice is the responsibility of all healthcare personnel I.C. is one of the most important functions of a nurse can perform.

Definitions of some terms Infection control refers to policies and procedures used to minimize the risk of spreading infections, especially in health care facilities.

Infection Infection is the invasion of the body by pathogens or microorganism capable of producing disease.

Chain of infection

Infectious agent: Any germ causing a disease (bacteria, virus, fungi, protozoa, ….etc) Reservoir such as (food, water, soil, animal, insect, and human. Portal of exit , after organism find a site in which to grow, they must find a portal of exit such as ( mucous membrane, skin respiratory tract, gastrointestinal tract, and blood.

Mode of transmission May be through 1- Direct contact such as ( kissing, sexual contact, or closed contact ) 2- Indirect contact as (sneezing, coughing, eating or drinking of contaminated food or water, insect, or animal bites ).

Portal of entry Where the pathogen enter the body such as ( eye, mouth, nose, breaks in the skin and urogenital opening). Host Depends on the individual’s degree of resistance to pathogens. Such as ( some one not vaccinated, disorder in the immune system….etc)

What are the human body's defenses These defenses include both natural barriers and responses by the immune system. Natural Barriers :- The human body has a number of natural barriers to protect itself from would-be germ invaders as Intact skin, mucous membranes and cilia lining the respiratory system. digestive secretions, including enzymes and bile.

Responses by immune system The immune system is greatest body's defense. Once invaded by a germ the immune system can produce a variety of antibodies to respond to the germ

Prevention and control of infection Breaking the Chain of Infection Intervention Link Accurate and rapid identification of micro-organisms Early recognition of sign and symptoms of infection Infectious or Causative Agent

Reservoirs Employee health examination and screenings Environmental cleansing including floors, walls, exam tables and beds Disinfection/Sterilization of equipment and instruments Proper Hygiene - bathing and hand washing Clean gowns, linens and towels Clean wound dressings

Portal of exit Hand washing Use of Personal Protective Equipment such as gloves, gowns, facemask

Cont. portal of exit

Cont. portal of exit Clean dressings over wounds Control of excretions and secretions Covering the mouth and nose when coughing or sneezing Proper waste disposal Standard Precautions

Method or Mode of Transmission Hand washing Rooms with air flow control Safe Food handling Isolation Transmission-based precautions

Sterilization of equipment and supplies Medical and Surgical Asepsis Use of personal protective equipment such as gloves, gowns, facemask. Proper disposal of contaminated objects

Portal of Entry Aseptic technique Sterile technique or Surgical Asepsis Catheter Care Wound care Proper Disposal of needles or sharps Maintaining skin integrity Standard Precautions

Susceptible Host Treatment of Disease Recognition of clients at risk Immunization Exercise Proper Nutrition

Asepsis Antisepsis or sanitation Asepsis is defined as a condition in which pathogens are absent or controlled. Aseptic practices break the chain of infection by preventing the transmission of pathogens. There are three levels of aseptic control. Antisepsis or sanitation Disinfection Sterilization

Antisepsis/Sanitation This method of infection control includes using soap and water to wash the hands and body. the use of antiseptics such as alcohol, iodine and betadine to clean the skin for medical procedures, as these inhibit the growth of pathogenic microorganisms.  This level of asepsis may kill or inhibit some microbes but is generally not effective against viruses and spores

Disinfection Is the process of using chemical agents or boiling water to destroy or kill pathogenic microbes. These agents  are not always effective against viruses and spores, but it  may irritate or damage the skin so they are mainly used on surfaces , equipment and instruments.

Sterilization Is the only level of asepsis that kills all microbes both pathogenic and nonpathogenic. It is the method used by all health care facilities and includes the use of gas, chemicals, steam under pressure and radiation. Sterilization is mainly used on medical instruments and equipment, surgical dressings, gowns etc. 

Medical asepsis Wash hands frequently, especially before handling foods, before eating, after going to the toilet, before and after each client contact, and after removing gloves Keep soiled items and equipment from touching the clothing Do not place soiled bed linen or any other items onto the floor Move equipment away from you when brushing, dusting, or scrubbing articles

Cont. medical asepsis Dispose of soiled or used items directly into appropriate containers Avoid touching your eyes, face, nose or mouth. Follow guidelines for isolation techniques

Surgical Asepsis Basic principles of Surgical Asepsis include: known as Sterile Technique requires specific procedures which render an area free from all microorganisms including spores.  Basic principles of Surgical Asepsis include: Only a sterile object can touch another sterile object Open sterile packages so that the first edge of the wrapper is directed away from the worker to avoid the possibility of a sterile wrapper touching unsterile clothing

Cont. surgical Asepsis Hold sterile objects above the level of the waist Avoid talking, coughing, sneezing, or reaching over a sterile field or object Never walk away from or turn your back on a sterile field All items brought to enter normally sterile body cavities, should be sterile Consider an object contaminated if you have any doubt as to its sterility

(Compliance estimated less than 50% ) Why Don’t Staff Wash their Hands (Compliance estimated less than 50% )

Hand Hygiene Techniques Routine hand wash 10-15 seconds Aseptic procedures 1 minute Surgical wash 3-5 minutes Alcohol hand rub Routine hand wash 10 – 15 seconds using a neutral pH soap Before eating or smoking. After going to the toilet Before significant patient contact Before injection, venepuncture Before and after routine use of gloves After handling items soiled with blood or body substances Aseptic procedures One minute using an antimicrobial soap or skin cleanser Before any nonsurgical procedures that require aseptic technique (such as inserting IV catheters) Surgical wash First wash – 5 minutes Subsequent washes – 3 minutes using an antimicrobial skin cleaner containing 4% chlorhexidine or povidone-iodine Before any invasive surgical procedure Non-water cleansers or antiseptic products such as alcohol-based hand rubs or foam may be used when hand washing facilities are inadequate or in emergency situations where there may be insufficient time and/or facilities. If hands are visibly soiled a source of water should be sought. Hands should be washed as soon as an appropriate facilities become available. Add Notes Here:

Repeat procedures until hands are clean Routine Hand Wash Note: Hand and wrist jewellery including plain weddings bands should not be worn, as these are likely to increase the presence of gram negative bacilli Nails should be short and clean and artificial nails should be discouraged as they contribute to increased bacterial counts. Wet hands thoroughly with warm running water. Keep hands lower than elbows and apply soap. Use friction to clean between fingers, palms, backs of hands and wrists. 4. Rinse hands under running water until all soap is gone. DO NOT TOUCH TAPS WITH CLEAN HANDS – IF ELBOW OR FOOT CONTROLS ARE NOT AVAILABLE, USE PAPER TOWEL TO TURN TAPS OFF. 5. Pat hands dry with a clean, single use towel. A neutral soap should be used for routine handwashing. If liquid soap is dispensed from reusable containers, these must be cleaned when empty and dried before refilling with fresh soap – refilling soap containers is a potential source of infection. Where possible single use soap containers or bladders should be used. HANDWASH SOLUTIONS SHOULD NEVER BE TOPPED UP Scrub brushes should not be used for routine handwashing because they can cause abrasion of the skin, and may be a source of infection. Add Notes Here: Repeat procedures until hands are clean

And good luck