improving patient safety in general practice edited version from a talk by dr robert varnam
TRANSCRIPT
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Improving Patient Safetyin general practice
Edited version from a talk by Dr Robert Varnam
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OVERVIEW
• What do we know?• Why do we reliably fail?• How to gain different perspectives?• Significant event analysis• Detecting & measuring adverse events• What to improve?
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Patient Safety in General Practice
... what do we know?
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What do we know?
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What do we know?
• size of the problem– 25% of >75s experience healthcare associated harm each year– 5% of admissions = preventable adverse drug events
• impact of safety incidents– 73% of adverse events in >75s required some intervention
Series of 4400 patientswith 1400 adverse events
Approx 1m consultations per dayin general practice
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What do we know?
Adverse events in general practice are wasteful→ increased costs→ reduced opportunities→ reduced staff morale
Improving safety requires good staff, good processes responsive, learning organisations generic measurement & improvement skills good access, high quality care
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Patient safety culture
• ‘shared values, norms and attitudes, which combine to create the environment within which staff work’
• good safety culture– a constant and active awareness of the potential for things to go
wrong– open and fair, encourages people to speak up about mistakes– everyone takes up their responsibility for safety
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Why do we reliably fail?
What causes harm to patients?Where should we focus our improvement efforts?
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Lessons from Human Factors Research
• Errors are common • Errors are predictable• The causes of errors are known
• Many errors are by-products of useful cognitive functions
• Many errors are caused by activities that rely on weak aspects of cognition– short-term memory – attention span
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SRK Framework
Conscious Automatic
Control ModeSituation
Routine
Novelproblem
Skill-basedbehaviour
Skill-basedbehaviour
Rule-basedbehaviour
Rule-basedbehaviour
Knowledge-basedbehaviour
Knowledge-basedbehaviour
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Human Error
• “Failure of planned actions to achieve their desired ends” (Reason 1990)
PlanPlan ActionsActions OutcomeOutcome
Planning mistakesPlanning mistakes
Execution errorsExecution errors
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Necessary ViolationNecessary Violation
Optimising ViolationOptimising Violation
Routine ViolationRoutine Violation
Knowledge-BasedMistakesKnowledge-BasedMistakes
Intended ActionIntended Action
Errors / Unsafe ActsErrors / Unsafe Acts
Human Error Taxonomy
UnintendedActionUnintendedAction
SlipSlip
LapseLapse
MistakeMistake
ViolationViolation
AttentionFailuresAttentionFailures
MemoryFailuresMemoryFailures
Rule-BasedMistakesRule-BasedMistakes
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Skill-based slips & lapses
• Often due to inattention and distraction
• Double capture slips• Omission following interruption• Reduced intentionality• Perceptual confusion• Interference problems
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Rule-Based Errors
• Application of a good rule to the wrong situation
• Situation not well specified• Cognitive overload• Situation is an exception to a robust rule
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Knowledge-Based Mistakes
• Inadequate understanding of situation
• Bounded rationality
• Difficulty in creating complete and accurate mental representations of the problem space
• Heuristic strategies to cope with and reduce complexity may result in mistakes
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Summary
Human Error Type
Typical Forms Common Prevention Strategies
Slip / Lapse
•Double capture•Omission•Interference•Perceptual Confusion
•Minimise interruptions•Forcing functions•Colour-coding, highlighting differences•Checklists, memory aids
Rule-Based Mistake
•Strong-but-wrong•Exception to rule•Cognitive overload
•Minimise / highlight exceptions•Provide feedback•Manage workload
Knowledge-Based Mistake
•Confirmation bias•Out of sight, out of mind•Encystment•Vagabonding
•Decision support•Team work & CRM training
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Human error
The search for and understanding of errors has not made patient care much safer
Error is normal ... what are you going to do about it?
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Violations
Professor Renee Amalberti
Key ReferenceAmalberti, Vincent et al. Violations and migrations in
healthcare: a framework for understanding and management. Quality and Safety in Healthcare 2006; 15; 66-71
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Who always drives at 30mph?
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PERFORMANCE
ACCIDENT
Systemic Migration to BoundariesV
ER
Y U
NS
AF
E S
PA
CE
The speed limit is 30 mph- the ‘legal’ space
Belief Systems
Life Pressures
INDIVIDUAL BENEFITS
Driving 35 mph- the ‘Illegal-normal’ space
Driving50 mph – the ‘illegal-illegal’ space (for almost all of us!)
Perceivedvulnerability
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Prescribing a PPI with NSAID
• What is your policy for prescribing a PPI with a NSAI for patients over 60 years old?
• Do you observe it every time?
• When do you (choose) to violate?
• How far is it safe to migrate?
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PERFORMANCE
ACCIDENT
Systemic Migration to BoundariesV
ER
Y U
NS
AF
E S
PA
CE
Every patient >60 on a NSAID gets a PPI
Belief Systems
Life Pressures
INDIVIDUAL BENEFITS
PPI for patients >60 when I remember or those with history of GI disease
I’ve never had a patient harmed by NSAID so don’t use a PPI
Perceivedvulnerability
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System productionCommercial stressCoping and resiliencyIndividual advantages
Performance must be understood in a broad context
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Productivity
• Migrations/violations are often seen first as benefits with immediate payback– saving time– increasing productivity
• Tension between following protocol and productivity
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Results of Migration
• Migrations lead to a large range of illegal practices
• Over time these become “normal” for the system - stabilized
• All stakeholders in the system migrate and violate– Migrations differ for individuals and roles– E.g. senior management or actors in the field
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What not to do
Don’t conclude “Policies must be stricter, clearer, and implemented” – Individuals make cost/benefit decisions on compliance. Too
stringent implementation can lead to violation/migration.
Don’t resort to exhortation “Work Harder/Better”– Don’t just send a memo about the old, written rule– Take a systems view
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PERFORMANCE
ACCIDENT
Managing MigrationsV
ER
Y U
NS
AF
E S
PA
CE
Expected safe space of action as defined by professional standards
Market Demand
Life Pressures
INDIVIDUAL BENEFITS
‘Illegal-Normal’
Always/Sometimes
‘Illegal-Illegal’ Space
Never/Sometimes Technology
Never/ Never
Policy, Protocols, Regulation
‘Real Life’
BTCUs
Always/Always
1. Individual or collective experience of incidents, share storiesAgree stop rule to migration
2. Acknowledge individual variation in risk acceptance. System response required3. Forbidden
space, except under extreme pressure/ conditions
4. Agreed forbidden space for all staff
Accept and adapt protocols and defences
Suppress triggering conditionsHuman FactorsReliability
Add defences and Just Blame
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Work harder. Be more vigilant. Follow the protocol and other useless interventions!
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Human error
“We can’t change the human condition, but we can change the conditions
under which humans work”
James Reason
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A systems approach
• make it easier to do the right thing
• make it harder to do the wrong thing
• redesign processes, to allow you to spot & stop errors reaching the patient
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A systems approach
Factors Influences
Patient Condition (complexity & seriousness)Language and communicationPersonality and social factors
Task and Technology
Task design and clarityAvailability and use ofAvailability and accuracyDecision-making aids
Individual (staff) Knowledge and skillsCompetencePhysical and mental health
Team Factors Verbal communicationWritten communicationSupervision and seeking helpTeam structure (congruence, consistency, leadership)
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A systems approach
Factors Influences
Work Environmental Staffing levels and skills mixWorkload and shift patternsDesign. availability and maintenance of equipmentAdministrative and managerial supportEnvironment
Organisanonal & Management
Financial resources & constraintsOrganisational structurePolicy, standards and goalsSafety culture and priorities
Institutional Context Economic and regulatory contextNational health service executiveLinks with external organisations
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A systems approach
Conduct review of organization– Are processes simple and standardized?– Are failure identification and mitigation systems in place? (more on this
later)
Conduct a task analysis– How many interruptions are there during the work shift?– How complex are the tasks or instructions?
Conduct human factors audits– Noise levels; distractions; design of workspace; label format; work hours
and reviews
Train staff in human factors awareness
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Adapted from REASON, 2005
People
Environment
Workspace
TaskEquipment
Staff
Patients
The ‘system’Factors within the healthcare system that could potentially lead to harm
Staff act as harm absorbers
Organisation
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‘Three bucket’ model forassessing risky situations
(Reason, 2004)
1
2
3
SELF CONTEXT TASK
The fuller your buckets, the more likely something will go wrong, but your buckets are never empty.
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Assessing the risk
Serious risk: don’t go there / change something
Moderate to serious: be very wary
Routine to moderate: proceed with caution3
5
7
9
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Self Bucket
Level of knowledge training
Level of skill competence and experience
Level of experienceinvoluntary automaticity,under/over confidence
Current capacity to do the task
fatigue, time of day, distractions, feelings
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Equipment and devices availability, familiarity
Physical environment lighting, noise, temperature
Workspace working environment, writing space, layout
Team and support leadership, stability and familiarity, trust
Organisation and management
safety culture, goals, targets and workload
Context Bucket
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Taskcomplexity
calculations, multiple cognitive tasks
Novel task unfamiliar or rare events
Process task overlap, multi-tasking
Task Bucket
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‘Three bucket’ model forassessing risky situations
(Reason, 2004)
1
2
3
SELF CONTEXT TASK
The fuller your buckets, the more likely something will go wrong, but your buckets are never empty.
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Understanding & measuringpatient safety
Take a broader viewUse information appropriately
Prioritise deliberatelyBe more proactive
Use casenote review
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So many questions!
• How many of our patients are harmed?
• Which areas need most attention ?
• What’s causing adverse events ?
• What changes could we implement?
• Are the changes an improvement ?
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We need a metric
•Focus on actual patient harm
•How many patients had an adverse event last year?
•What are the common areas of harm?
•Have our changes succeeded in reducing the incidence of harm ?
Primary Care Trigger Tool
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Casenote review• objective• focus on outcomes• focus on common
events
• large numbers• reliable over time
Staff reporting• subjective• focus on error• focus on memorable
events (rare)
• v small numbers• variable over time
We need casenote review
Primary Care Trigger Tool
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Problems of casenote review• lengthy, experienced clinician• wasteful (reviews with no adverse events)
Trigger Tools – a solution• filtered & targetted → quicker, cheaper, less wasteful
1.Filter out patients with low likelihood of adverse event
2.Target clinical review where harm is suspected
We need trigger tools
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Step-by-step A. Sample
• List of all patients > 75 years
• Place in random order
• Each month, select 25-100 for PCTT review
• Review the past 3 months
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1. Search for triggers [clerical]
• unambiguous proxy indicators of harm risk
Step-by-step B. Review
2. Search for adverse events [clinical]
• iatrogenic harm events
Sample
NO0 events
30 patients
20 patientsYES
NO0 events
10 patients
10 patientsYES12 events
50 patients
Event rate = 12 / 50 = 0.24
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Step-by-step C. Analyse
Change 1
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Step-by-step C. Analyse
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Primary Care Trigger Tool
Developed by NHS Institute, in partnership with 32 GP practices across England
Analysis of 4400 casenote reviews1400 adverse events
25% resulting in hospitalisation/permanent harm/death
Independent expert academic review
81% sensitivity4 min/pt
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Primary Care Trigger Tool
Identify common harms
Measure improvement over time
× Not valid for benchmarking
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Primary Care Trigger Tool
Medication
Repeat medication discontinued
Prescribing of opioid analgesia
Prescribing oral NSAID/COX2
Prescribing warfarin
Prescribing insulin
Prescribing methotrexate
Prescribing amiodarone
General Care
Seen > once in 2 days
Fall if age > 75
Fracture if age > 75
Pressure sore or ulcer
Urinary catheter in situ
VTE
Proven DVT or PE
Patient transfer
Readmission to hospital within 2 weeks of discharge
Laboratory
Na+ <130 or >150 mmol/l
K+ <3.5 or >5.5 mmol/l
INR <2 or >5
Haemoglobin <9g/dl
MRSA positive
C.diff positive
Positive wound/skin swab
eGFR <= 20
End of life
Death
Key diagnosis
New diagnosis of CVA/TIA
New diagnosis of acute confusional state
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eg – Warfarin & bleeding .. Trigger
• INR > 5 is a trigger on the PCTT
• Many patients with an INR > 5 come to no harm
• This is not an adverse event (even if results from error)
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eg – Warfarin & bleeding .. Adverse event
• Retinal bleed caused by Warfarin INR > 5
• Patient has come to harm
• This is an adverse event (whether result of error or not)
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www.institute.nhs.uk/safercare/TTPwww.institute.nhs.uk/safercare/TTP
Primary Care Trigger Tool
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Getting trainees stuck in
• theoretical training
• role model openness
• get them stuck in– MaPSaF– walkround– PCTT– process map to identify defects– PDSA– continual measurement