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Transcript
Infection Control in Hospitals 1. Modes of infection transmission 2. Air bourne infection control 3. Controlling the waste stream – outside the square Modes of Infection Transmission • Direct contact – bacteria or viruses are transmitted through direct contact between infected person (host) and susceptible person. • Indirect contact – Bacteria or viruses are transmitted from contaminated surfaces such as door knobs, computer keyboards, mobile phones, tables etc • Droplet transmission – large droplets are generated through coughing or sneezing. They fall out of the air relatively quickly • Airborne transmission – small droplet nuclei or dust particle suspend it the air for long periods of time – chicken pox, tuberculosis, measles, aspergillus, legionellus Airborne infection control AS1668.2 – 2002 section 5 and HB260 requires ventilation for infection control for:- • Infectious isolation rooms • Protective isolation rooms • Operating theatres • Sterile Stores • Mortuary • Recovery • Dirty Utility Rooms Airborne infection control • Air change rates • Exhaust rates • Minimum outside air requirements • Filtration • Room pressurisation • Direction of airflow from clean to dirty Airbourne infection control • Infectious Isolation room (-ve pressure) Ante room (-15Pa) Isolation Room (-30Pa) Ensuite (-45Pa) Airbourne infection control • Protective Isolation room (+ve pressure) Isolation Room (+15Pa) Ensuite (-5Pa) Airbourne infection control • Quarantine room (-ve pressure) Ante room (-15Pa) Isolation Room (-30Pa) Anteroom doors to be interlocked. Anteroom to be big enough for a bed. Ensuite (-45Pa) Airbourne infection control • Operating theatres Anaesthetic room Operating theatre Sterile store Food Visitors Rubbish – food scraps, paper, glass, plastic Clean linen, bulky goods Dirty linen Medicine, sterile instruments Well patients Sick and injured patients Doctors and nurses Automated Transportation Systems • Pneumatic Tube – medicine, sterile instruments, blood, pathology samples • Automated Guided Vehicles – Meals, Bulky goods, Clean Linen, (Dirty Linen, Rubbish) • Automated Vacuum Waste System – Dirty Linen, all rubbish Automated Guided Vehicle Automated Vacuum Waste System Automated Vacuum Waste System St Olav’s Hospital, Trondheim, Norway Convert waste stream to carbon char and electricity www.globalskm.com v