Infection prevention and control Flashcards
What is an aerosol
Collection of solid or liquid particles of any size suspended in a gas
What is VOC
Variant of concern - changed have a clinical or public health significanvce that affects one or more of
-transmissibility
-virulence
-vaccine effectiveness
-diagnostic testing
What was the limit of detection for covid variants SARS COV-2
62 copies/ml of saliva
Within SARS COV-2 what was the highest exhaled breath aerosol
omicron
What standard precautions should be taken within dental treatment
= Very difficult to assess infectious state of patient
= assume all infectious
= treat all patients to the same high standard
= No discrimination
How can infections spread
Droplets
Aerosols
Direct contact
Fomite
What should the standard dental treatment precautions include
Standard precautions should include ‘safe
ventilation’ to minimise far-afield airborne
transmission in health and social care settings
When are transmission based precautions implemented
Only implemented in case of known or suspected cases which can be very difficult to identify for COVID-19 due to a high frequency of:
- asymptomatic,
- pauci-symptomatic (few) or
- pre-symptomatic forms.
What are the three C’s present
Closed setting with poor ventilation
Crowding
Close contact
What is the hierarchy of controls for hazardous environments
Most effetive: Elimination
Substitution
Engineering controls
Administrative controls
PPE
What engineering controls are present in dental treatment
Rubber dam
High volume aspiration
Effective surgery ventilation
Isolate people from the hazard
What are some air disinfection devices
Portable HEPA filters
UV air disinfection
What are the CO2 conc to maintain
800ppm (typically 10-15l/s/person)
