Environmental hygiene in healthcare
Thorough environmental hygiene is important for the prevention of transmission of infectious diseases within healthcare settings. Environmental hygiene encompasses effective cleaning of surfaces using appropriate products, decontamination of medical equipment and devices used in patient-care procedures, safe and appropriate handling of sharps, blood and body fluid spills, waste and linen.
Environmental surface cleaning
The role of environmental cleaning is to reduce the number of infectious agents that may be present on surfaces and minimise the risk of transfer of micro-organisms from one person/object to another, thereby reducing the risk of cross-infection.
Cleaning is a process which intends to physically remove foreign material (for example dust, soil, blood, secretions, excretions and micro-organisms) from a surface or an object through the use of water, detergent and mechanical action (friction).
The SA Health Cleaning Standard (PDF 573KB) has been developed to establish a state-wide approach to environmental cleaning in South Australian healthcare facilities. The Standard contains information on various topics such as infectious disease transmission, cleaning chemicals, equipment and techniques, a cleaning schedule, an environmental hygiene program and audit system. There are also additional separate appendices:
- Appendix 5 - Risk matrix and classification of functional areas (PDF 465KB)
- Appendix 6 – Risk classification of functional areas within hospitals (PDF 21KB)
- Appendix 7 - Cleaning schedule (PDF 60KB)
- Appendix 8 – Audit tool (XLS 283KB).
Management of the environment during construction and renovation
Environmental disturbances which occur during construction or renovation projects pose both airborne and waterborne risks particularly to persons with poorly functioning immune systems. It is essential that all key stakeholders are included in all stages of the project to minimise the risk of vulnerable persons acquiring a potentially serious infection within the healthcare setting.
The SA Health Prevention and Control during Construction and Renovation at Existing Healthcare Facilities Policy Guideline (2014) (PDF 249KB) and associated toolkit (PDF 255KB) have been developed to establish a state-wide approach to the management of construction and renovation projects.
Decontamination of medical equipment and devices
Used patient care equipment should be handled in a manner that prevents skin and mucous membrane exposure, contamination of clothing and transfer of microorganisms to other patients and the environment.
Items of shared patient equipment such as infusion pumps, oximeters, BP cuffs, commodes must be cleaned and decontaminated prior to use on another patient. The method to be used should be in line with national and local infection control guidelines and the manufacturer’s instructions.
See Reprocessing of medical devices for information on the reprocessing of reusable medical devices.
Management of spills
Spills must be removed immediately or as soon as practicable, and the area cleaned and disinfected dependent upon the setting and volume of spill. In patient care areas small spills can be easily managed by wiping the area immediately with a paper towel and then cleaning the area with detergent and water. Large spills (over 10cm) containing blood or body fluids should be contained, and in addition to cleaning as above, a chlorine-based disinfectant should be used. There are commercially available spill kits which facilitate the process.
Personal protective equipment, including gloves as a minimum, must be worn when cleaning up blood and body substance spills.
Safe handling of sharps
It is important that all staff are aware of the inherent risk of injury associated with the use of sharps such as needles, scalpels and lancets. When handling sharps the following principles apply:
- the person using the sharp is responsible for its safe disposal
- dispose of the sharp immediately following its use and at the point of care
- dispose of all sharps in designated puncture resistant containers that conform to relevant Australian Standards (AS/NZS 4261:1994 reusable; AS 4031:1992 non-reusable)
- dispose of sharps disposal containers when they are ¾ full or reach the specified fill line, seal appropriately and place in the clinical waste stream
- never pass sharps by hand between health care workers
- never recap used needles unless an approved recapping device is used
- never bend, break or otherwise manipulate by hand a needle from a syringe.
Safe handling of waste
It is important that all staff dealing with waste adopt procedures that minimise risk to both themselves and to their environment.
Medical waste is defined as waste consisting of all sharps, human tissue including bone, any liquid body fluid, and laboratory specimens.
Dressings and bandages, materials that are only stained or have had minimal contact with body substances, disposable nappies, incontinence pads or sanitary napkins are not regarded as medical waste and can be disposed of in general waste.
- appropriate personal protection equipment (PPE) must be worn when handling all waste, with due care to protect against exposure to blood and body fluids, and injury
- waste is to be segregated at the point of generation into general, clinical, cytotoxic, radioactive and hazardous streams
- there is a legal obligation to classify and contain waste according to the facility waste management plan and State Regulations
- healthcare workers should be trained in the correct procedures for waste handling.
Safe handling of laundry and linen
All used linen should be handled with care to avoid dispersal of microorganisms into the environment and to avoid contact with staff clothing. The following principles apply for linen used by all patients regardless of their infectious status:
- all used linen is considered contaminated therefore minimal handling is recommended
- appropriate PPE must be worn during the handling of soiled linen to prevent skin and mucous membrane exposure to blood and body fluids
- dispose of all linen into an appropriate linen container at the point of care
- linen which is heavily contaminated with blood and/or other body fluids which could leak must be contained by a leak-proof bag and secured prior to transport
- hand hygiene must be performed following the handling of all used linen.
For further information
For further information on environmental hygiene contact the SA Health’s Infection Control Service on (08) 7425 7161.