PHMP and decontamination Flashcards
What is PICO?
Population
intervention
comparison
outcome
What is confidence intervals and relative risk?
Confidence interval:
the range of values that the absolute risk difference will take in the population
A confidence interval that overlaps with the value of no difference is insufficient evidence for a difference between treated group an the control group.
relative risk:
the ratio of;
Probability of an outcome in exposed group: Probability of an outcome in an unexposed group.
What are the 5 steps/cycle of clinical audits?
Identify problem or issue
Set criteria and standards
Observe practice/data collection
Compare performance with criteria and standards
Implementing change
Name 2 other things you can do other than audit? (5)
Peer review- Getting groups of dentists together to share experiences on the aspects of practice.
Enhanced Significant Event Analysis- Meet and analyse an event to implement changes from what we have learned.
Practice based research project- Participation in an approve research project with Scottish Dental practice Based Research Network.
Quality improvement project- specific methodologies and training required for this.
What are the 6 dimensions of healthcare? briefly explain each
Safe – ensure no avoidable harm to patients and that healthcare is delivered in a clean and safe environment.
Effective – ensure that most appropriate services, interventions and support are provided to everyone.
Person centred – partnership between patients and those delivering healthcare, ensures individual needs/values are met via communication, compassion, continuity and shared decision making
Timely – ensures that the most appropriate services, treatment and support are delivered at the correct time for everyone
Efficient – ensure that input maximises output = avoiding waste of equipment, supplies, ideas and energy.
Equitable – Ensures high quality care is provided to everyone regardless of personal characteristics such as gender, ethnicity, location and socioeconomic status.
What 3 head, neck and oral features can occur with cocaine use? (7)
Perforation of nasal septum and palate
Gingival lesions &ulceration
Erosion and attrition of tooth surfaces
TMJD
Orofacial pain +/- cluster headaches
GORD
Nasal drip
What are 4 side effects of opioid use? (6)
Addiction/dependency
Infective endocarditis risk
Enhances sedative agents
Hyposalivation
In large quantities;
Respiratory depression
Hypotension
What chemical class of drugs does methadone belong to?
Opiod receptor agonist
5 Methadone can be taken orally. Two formulas exist, one which contains sugar and an alternative formula which is sugar-free.
(a) List two environmental or lifestyle factors which increase the risk of dental caries for an individual who is prescribed methadone.
- Environmental: SIMD – employment status (unemployed), Crime rates (high), income (low)
- Lifestyle: high sugar, poor OH
What is the risk of sugar free preparation of methadone?
- More acidic - erosion
- Sugar free methadone lacks chloroform- less of an irritant if injected. The patient could inject this- increasing the risk of adverse side effects e.g. HIV transmission through reusing needles.
Consent
- Give 3 types of consent?
Implied – patients action or lack of action clearly indicates their wishes
Verbal – patient clearly states their consent for procedure
Written – patient signs declaration that they consent to procedure
What factors must we discuss with the patient to ensure informed consent? (8)
Why tx is justified
What is involved in the procedure
The risks and benefits of tx
Alternatives to tx
Consequences of no tx
prognosis/outcome
time
cost
What 6 factors make up consent?
It must be
Valid
-Recently obtained
-Remain current and appropriate (pt still agrees)
-Specific to the proposed treatment.
Legal
-Ability (patient needs to have the capacity to make an informed condition )
Informed- Pt needs enough information to make the decision.
Voluntary- Pt has made the decision (not manipulated or coerced)
What type of person carries consent for a 3 year old patient (4)
Those with parental responsibility
- Biological mother
- Childs father if he is married to biological mother
- The childs father (if not married) as long as his name is on the birth certificate after 4th May 2006
- court appointed people with parental rights (e.g. adoptive parents)
What type of person carries consent for a 16 year old patient
In Scotland those 16 or over can consent for themselves as long as they have capacity
Or welfare guardian.
Or dentist with AWI certificate.
You are working at a dental practice as a dentist, you arrived exceptionally early and saw 2 nurses getting off the bus in their uniforms.
- Name 2 concerns you would raise with the nurses?
Infection control/cross infection
practice and professional reputation
You are working at a dental practice as a dentist, you arrived exceptionally early and saw 2 nurses getting off the bus in their uniforms.
Name 6 key learning outcomes from a learning session on PPE?
Wear PPE at times when dealing with clinical procedures
Change/Wear PPE when cleaning up
Change PPE between patients
Correct disposal PPE after usage and soiling - in orange stream
Use of PPE During decontamination
Use of PPE: Protect eyes, hands and clothing
Use of PPE: Protect the patient: eyes, hands and clothing
You are working at a dental practice as a dentist, you arrived exceptionally early and saw 2 nurses getting off the bus in their uniforms.
Identify 4 Key steps you would follow when conducting an audit to ensure staff follow instructions on PPE? (4)
Clinical Audits are a quality improvement report.
The key steps of an audit cycle are:
* Identify the problem or issue.
* Set criteria & standards
* Observe practice/collect data.
* Compare the performance with criteria and standards
* Implement change.
Decontamination
- Why do we need to clean? (4 examples)
Q said manual cleaning but manual cleaning is being phased out
1. Incase of biological contamination Contamination with deposits prevents direct contact between the steam and surfaces of the instruments that is necessary for effective sterilisation. - e.g. biopsy devices may become contaminated with previous patient materials (resulting in a misdiagnosis)
2. -Functionality of the instrument (biological debris may clog the hinges in forceps and impair function of cutting tools such as burs or endodontic files)
3. Removes organic material:
Any restorative material left on instruments can adhere to the instruments (during sterilisation) making them more difficult to clean & can encourage microorganism growth. These should be removed if possible at chairside.
4. Legal requirements- It is a requirement under the medical devices directive for effective cleaning prior to sterilisation.
Why do we need to test the washer disinfector/steriliser? (4)
Legal requirement
Testing helps detect procedural errors and equipment malfunctions
It is important to protect the patient by making sure the machine has carried out all parameters as set up during installation or validation.
Ensure the equipment is working to its optimum and to the correct standard
Ensure validity of the cycle ( Validation is completed by a qualified personell- also does periodontic testing/maintenance)
Describe the 5 steps of the washer disinfector
Cleaning stages - prewash, main wash and rinse-
Flush/prewash - saturates the contaminated instruments
< 35 degrees (to prevent coagulation of proteins)
Main wash - Detergents are used at this stage to increase the effectiveness
Depends on the chemicals used (generally 45-65 degrees)
Rinse - removes residue (biological or chemical)
< 65 degrees
Removing prions/vCDJ:
Thermal disinfection - actively killing microorganisms with heated water
Between 90 - 95 degrees for a minimum of 1 minute
Drying - removes moisture before sterilisation
No specific temperature but its usually between 90 - 110 degrees
What are the differences between type B and type N sterilisers?
Type N:
No vacuum = Work by filling the chamber with steam and passively forcing air out of the chamber.
Cannot process wrapped, channelled or lumened instruments or hinged (due to the lack of vacuum capabilities)
instruments cannot be stored and must be used directly after sterilisation
Type B Sterilisers:
Pre-vacuum - Remove air by vacuum pump to create a negative pressure
Then chamber fills with air - allows all surfaces of the instruments to be sterilised (even wrapped instruments)
Post-vacuum - removes remaining moisture to ensure the product is not saturated
Processes wrapped, channeled and lumened instruments and porous items i.e. cotton wool swabs
Since it can process wrapped instruments the instruments will be sterile at the time of use and can be stored (for long periods of time)
Name 4 key personnel involved in the decontamination process and give a
description of each of their roles
Manager (generally the practice owner):
Person who is ultimately responsible for decontamination
define staff roles and responsibilities, ensure training records are present etc
Operator/user:
Person designated by the manager with the authority to operate a steriliser/washer disinfector
This includes those involved in noting of device reading and housekeeping duties
competent/Test person:
Records Test cycle readings from the machine to ensure that the parts of the machine are working correctly and that the equipment taking temperature/pressure readings are providing accurate values
Periodic testing, Maintenance and validation of equipment:
We have the equipment tested and validated by a qualified personnel so that we are assured that the decontamination responsibilities are being carried out to the correct standard.
Authorising Engineer (decontamination)
AE(D) ensure the work being done by you and the service partner are up to standard.
- Can sign off validation reports carried out by CP(D)
- Can advice if the testing is being carrying out correctly or not
What type of water is used for the final rinse in the AWD cycle and why use this as opposed to mains water?
Pure water is used. This has all the particulate filtered out and has a very low bacterial/fungal presence. (Conductivity of PW is 4.3 microsiemens)
Mains water cannot be used as we want a conductivity of less than 30 microsiemens.
Conductivity is a measure of all the particulate water has come in contact (silicates/metals/minerals) . Mains water can leave a residue on the instrument surface
Tap water cannot be used for sterilisers, have to use water of less than 30us (micro-siemens)- pure water.
Pure Water:
Distilled
Deionised
Reverse osmosis
Sterile
What is CPD? (3)
Continuing professional development:
- process of tracking and documenting the skills,
knowledge and experience that you gained throughout your career
- It is a requirement by the GDC that a registered member must adhere to 100 hours of verified CPD training every 5 years to stay registered.
- CPD helps maintaining and updating their skills, knowledge and behaviour throughout their working life, contributing to delivery of good quality care and service provision, that patients and the public trust.
How many hours of CPD are to be done in a 5 year cycle and how many are to be
verifiable?
At least 100 hours of Verifiable CPD every 5 years
At least 10 hours every 2 years (want to spread the CPD)
Give 3 suggested CPD topics and the hours per cycle
Medical emergencies (At least 10 hours)
Disinfection and decontamination (at least 5 hours)
Radiography/radiation protection (At least 5 hours)
What are the 6 components of clinical governance?
Clinical audit
Openness (to poor performance and practice)
Risk management (to patients and practitioners)
Clinical effectiveness - evidence based practice
Education and training (CPD)
Research and development
What is an audit?
what is the purpose of a clinical audit? (3)
List the stages of a clinical audit cycle (6)
It is a quality improvement process that seeks to improve patient care and outcome through systematic review of care against explicit criteria and the
implantation of change.
It is used to :
Review what should be done is being done
Highlight gaps in knowledge, learning, attitudes, protocols and training
To produce a framework for implementing change
Cycle:
-Identify problem or issue
-Set criteria and standards
-Observe practice/data collection
-analyse and compare performance with criteria and standards
-Implementing change
-re-audit
What are the stages of significant event analysis (SEA)? (7)
Step 1 – identify significant event
Step 2 – collect and collate as much information as possible relating to the event
Step 3 – convene a meeting – non-threatening, no blame – educational focus
Step 4 – undertake a structured analysis
Step 5 – implement changes and monitor progress of all actions agreed upon
Step 6 – write up event analysis
Step 7 – seek educational feedback – peer review
List stages in the chain of infection (6)
Infectious agent
reservoir
portal of exit
mode of transport
portal of entry
susceptible hosts
state the name and concentration of chlorine releasing agent
sodium hypochlorite (actichlor) – 10,000ppm – 3-5mins
How long is the chlorine releasing agent left for?
3-5mins
Give waste streams and an example for each?
Waste streams:
1. Black
2. Orange
3. Yellow
4. Red
Black stream:
Household/domestic waste/non-infected waste
e.g. paper towels, wrappers
Disposal = put in an outdoor bin and collected by the council for landfill
Orange stream:
Low risk items that come into contact with the patient
e.g. PPE, swabs
Disposal = secured with ratchet tag, removed by specialise services to be heat disinfected
Yellow stream:
High risk/HAZARDOUS items
e.g. teeth (no amalgam), SHARPS, contaminated metal instruments, drugs and medicines
disposal = removed by specialist services for incineration
Red stream:
e.g. Amalgam, teeth containing amalgam fillings, lead foils
disposal = removed by specialist services and undergoes specialised waste reprocessing and centrifuging so that the mercury does not harm the environment
Brown confidential - confidential documents e.g. letters, px notes
Tooth with extracted amalgam what stream does it go into?
red stream
disposal = removed by specialist services and undergoes specialised waste reprocessing and centrifuging so that the mercury does not harm the environment
Amalgam Disposal
● Amalgam waste is put in a rigid white container which is has a screw top (red) lid and is spill proof
● It contains a mercury vapour suppressant
● it is clearly labelled as amalgam and is easily distinguished from other waste streams
● Amalgam waste is centrifuged to remove mercury (which is recycled)
Amalgam licensing law:
consignment note - kept for 3 years
What document is a legal/GDC requirement that needs to be kept regarding waste disposal?
How long does this need to be kept for?
What information has to be recorded? (5)
consignment note - kept for 3 years
Description of waste
Quantity of waste
Destination of waste
Origin of waste
Transport of waste
Describe clinical governance.
It is a systematic approach to maintaining and improving the standard of patient care within the health system.
What are the divisions of NHS Scotland dental services?
- Primary care
general dental services/practices
Public dental services – community services - Secondary care – hospital/dental hospital services
List the 9 GDC standards for dental professionals
Put patient’s interests first
Communicate effectively with patients
Obtain valid consent
Maintain and protect patients information
Have a clear and effective complaints procedure
Work with colleagues in a way that is in patients best interests
Maintain, develop, and work within your professional knowledge and skills
Raise concerns if patients are at risk
Make sure your personal behaviour maintains patients confidence in you and the dental profession
List the sinner circle (5)
Time
Over time blood or biological matter can dry in and adhere to the instrument.
Limit time between use and processing.
Chemical:
Detergent depends on purpose:
Enclosed process- High and low alkaline detergent (not touching skin)
Ultrasonic- enzymatic detergent
Manual washing- pH neutral detergent (less harmful for operator skin)
Chemicals must be validated against the cycle and revalidated if they are altered.
Temperature
Influenced by the chemicals used/ stage of AWD (wash stage <65 degrees & thermal disinfection (90-95 degrees)
Energy - The force applied when cleaning
Manual = brush
Ultrasonic = cavitation via sound waves
Washer disinfect = high pressure jet sprays
Since the force generated in the WD is less than the others we have to add stronger chemicals i.e. high/low alkaline (this can be used as its an enclosed process).
Also, Water - Various types can be used;
Potable/tap water can be used for;
Ultrasonic (hot or cold)
Manual washing (hot or cold)
Washer disinfect (hot or cold)
Tap water cannot be used for sterilisers, have to use water of less than 30us (micro-siemens)- pure water.
Name the 10 SiCPs
patient placement and assessment for infection risk
hand hygiene
PPE
respiratory & cough etiquette
safe management of linen
safe management of blood & bodily fluids spillages
safe management of care environment
safe management of care equipment
safe waste disposal (including SHARPS)
Occupational safety - prevention and exposure management of SHARPS
What are the 4 pillars of ethics?
o Respect for autonomy
o Non-maleficence
o Beneficence
o Justice