models for virtual patients
DESCRIPTION
Models for Virtual Patients. Presented by Jonathan Round. What is a virtual patient? - entry level. Elements Scenario Choices and consequences First person participant User interface. Example. Robert is a 6 week old boy who presents to A+E with poor feeding and no other symptoms. - PowerPoint PPT PresentationTRANSCRIPT
17th September 2006
Models for Virtual Patients
Presented by
Jonathan Round
17th September 2006Models for Virtual Patients
What is a virtual patient? - entry level
Elements– Scenario– Choices and consequences– First person participant
User interface
17th September 2006Models for Virtual Patients
Example
Robert is a 6 week old boy who presents to A+E with poor feeding and no other symptoms.
Examination is entirely normal apart from a temperature of 38.1° C
What should you do?
Take blood cultures and start on antibiotics
Reassure and send home with paracetamol
17th September 2006Models for Virtual Patients
You chose to reassure and send home with paracetamol.
Robert represents 6 hours later unresponsive with intractable convulsions.
A post mortem demonstrates bacterial meningitis.
Fevers in the very young should always be taken seriously as there are rarely any localising signs
17th September 2006Models for Virtual Patients
Example
Robert is a 6 week old boy who presents to A+E with poor feeding and no other symptoms.
Examination is entirely normal apart from a temperature of 38.1° C
What should you do?
Take blood cultures and start on antibiotics
Reassure and send home with paracetamol
17th September 2006Models for Virtual Patients
You chose to take blood cultures, clean catch urine, lumbar puncture and start on antibiotics
This is good, because the child had bacterial meningitis. Your interventions saved Robert’s life.
Clinical signs are often absent or subtle in the young.
17th September 2006Models for Virtual Patients
What is a virtual patient?- advanced levels
Elements– Scenario– Choices and consequences– First person participant
User interface Allows realistic choices Has realistic consequences Appropriate for level of user Links to/contains education
17th September 2006Models for Virtual Patients
Generic problems
Inflexible Expensive to set up Realistic choice models require clinician time Visually appealing models require programmer time
17th September 2006Models for Virtual Patients
Clinical realism and the problem of choice - 3 option model
Patient presents 3 options First step 9 options Second step 27 options Third step 81 options
120 potential clinical situations
17th September 2006Models for Virtual Patients
Different models to cope with choice
Hi-Fi Algorithm based Linear Lo-Fi
17th September 2006Models for Virtual Patients
Different models to cope with choice
Hi-Fi Algorithm based Linear Lo-Fi
High degree of visual/aural realism
Complex programming
Expensive ++
$100,000
Solve problem with cash
17th September 2006Models for Virtual Patients
Different models to cope with choice
Hi-Fi Algorithm based Linear Lo-Fi
Participant choices input information into a calculator that outputs clinical change
Complex formulae at the heart
No narrative
Good for physiology or biochemical scenarios
Solve problem with ‘infinite’ choice
17th September 2006Models for Virtual Patients
Different models to cope with choice
Hi-Fi Algorithm based Linear Lo-Fi
Allows only one route through the scenario
Incorrect responses lead to immediate correction
Minimal real choice
Good to test knowledge of protocols
Poor for realism - problem not solved
Easy to create
17th September 2006Models for Virtual Patients
Different models to cope with choice
Hi-Fi Algorithm based Linear Lo-Fi
Multiple choices at each step
Emphasises decisions
Minimal attention to appearance
Cheap
Problem solved!
17th September 2006Models for Virtual Patients
Major nodes -
describe major points in
clinical course
Creating a Lo-Fi nodal virtual patient
Presents to GP
Referred to clinic
Investigations
Definitive treatment complete
17th September 2006Models for Virtual Patients
Major nodes connected by appropriate management choices
Creating a Lo-Fi nodal virtual patient
17th September 2006Models for Virtual Patients
Other boxes added and then choices inserted
Creating a Lo-Fi nodal virtual patient
17th September 2006Models for Virtual Patients
Whole case completed
Creating a Lo-Fi nodal virtual patient
17th September 2006Models for Virtual Patients
QuickTime™ and aSorenson Video decompressorare needed to see this picture.
17th September 2006Models for Virtual Patients
Mahein Hussain
Welcome. You have now been a paeditrician since 4 pm, when your shift started.
Its day 1 of the job, and you are trying to remember all that stuff from the paed course. Anyway, it wasn't too busy and now you have discovered the mess and the takeaway menus. A Lamb Rogon Josh has arrived and you are half way through, when the crash bleep goes off
"Paediatric arrest in A+E".
What would you like to do?
Finish curry Run to A+E
17th September 2006Models for Virtual Patients
Advantages of Lo-Fi nodal approach
Quick Adaptable Linkable Uses clinicians and programmers effectively Anyone can do it!
17th September 2006Models for Virtual Patients
Thanks to… More at…
Chara BalasubramaniamArnold SomasunderamFerhal UtkuTerry Poulton
www.etu.sgul.ac.uk/virtualpatients/examples.htm