Randy S. Wax, MD, FRCP(C) Technology Application Unit and Critical Care Unit,
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Transcript of Randy S. Wax, MD, FRCP(C) Technology Application Unit and Critical Care Unit,
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Simulation technology Simulation technology in critical care: in critical care: 1000 deaths for 1000 deaths for
medical educationmedical educationTechnology for teaching Technology for teaching
and evaluating critical care and evaluating critical care knowledge, skills and knowledge, skills and
attitudesattitudes
Randy S. Wax, MD, FRCP(C)Technology Application Unit and Critical Care
Unit, Department of Medicine, Mount Sinai Hospital
Lecturer, Department of Medicine, University of Toronto
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Learning objectivesLearning objectivesWhy simulation?Features of a simulatorApply simulation technologyLimitations and resource
requirements
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A traditional approach to learningA traditional approach to learning
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Problem #1Problem #1Just because students learn a task
in the classroom doesn’t mean they can demonstrate successful performance during a crisis.
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Problem #2Problem #2Some clinical experiences are so
life threatening that students are not going to be involved in the management.
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Problem #3Problem #3Some are so rare that the student
may not ever experience the situation until they are in the midst of caring for the patient.
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Different simulation Different simulation formatsformats
Patient management problems (paper/pen)
Computerized simulation– Internet-based
Role playing/standardized patientsMannequin-based (e.g., CPR BCLS
trainer)Virtual reality
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Why simulation?Why simulation?Used in many “high reliability”
fields– Aviation– Nuclear power– Military flight operations
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Why simulation?Why simulation? No risk to patients Many scenarios can be presented,
including uncommon but critical situations in which a rapid response is needed – E.g. malignant hyperthermia 1:40,000 cases
Participants can see the results of their decisions and actions; errors can be allowed to occur and reach their conclusions
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Why simulation?Why simulation? Identical scenarios can be presented to
different clinicians or teams The underlying causes of the situation
are known With mannequin based simulators
clinicians can use actual medical equipment– examine limitations in the human-machine
interface
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Why simulation?Why simulation? Re-create clinical environments
– Assess interpersonal interactions with other clinical staff
– Evaluate and improve teamwork, leadership, and communication skills
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Why simulation?Why simulation? Intensive and intrusive recording of the
simulation session is feasible– Audiotape– Videotape– Physiological monitoring of participants
(EEG, ECG, etc.)
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Why simulation?Why simulation? There are no issues of patient
confidentiality Recordings can be preserved for
research, performance assessment, or accreditation
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How can we use How can we use simulation?simulation?
Skills trainingEvaluation
Epidemiology and modification of errors (and their consequences)
Crisis resource management
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What can you What can you teach/evaluate?teach/evaluate?
Specific skills– Intubation– Bronchoscopy– Defibrillation
Integration of knowledge, skills and decision making– Resuscitation– Refractory hypoxemia
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Level 1 Level 2 Level 3
Skill Integrate High-fidelity
Medical Student
Bag ventilation
Hypoxemic patient
Ward team
Resident Intubate Hypoxemic patient
ER/ICU RN, RT
Fellow/Staff
LMA, surgical airway
Difficult airway management
Full ER/ICU team
CME
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Evaluation of the evaluation toolEvaluation of the evaluation tool Type of simulator
– Low to high fidelity Type of simulation
– Full theatre environment or real location– Training device for specific tasks
Efficacy of assessment– Valid– Reliable
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SIM MANSIM MAN
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Life-size Life-size mannequinmannequin
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Computer Computer ControlledControlled
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Teach airway Teach airway managementmanagement
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Use airway devicesUse airway devices
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Fibreoptic intubationFibreoptic intubation
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Difficult airway– Decreased cervical range of motion– Tongue edema– Pharyngeal edema– Laryngospasm– Trismus– Fiberoptic intubation/bronchoscopy– Surgical airway – Detectable carbon dioxide
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Breath soundsBreath sounds
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Check pulse & blood pressureCheck pulse & blood pressure
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Obtain peripheral IV Obtain peripheral IV accessaccess
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Mask ventilationMask ventilation
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Decompress tension Decompress tension pneumothoraxpneumothorax
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Monitor cardiac rhythmMonitor cardiac rhythm
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Shock unstable rhythmsShock unstable rhythms
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Additional featuresAdditional featuresChest tube insertionInvasive hemodynamicsVentilator management (including
HFOV)
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Control crisis situationsControl crisis situations
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Give feedbackGive feedback
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Assessment instrumentsAssessment instruments Specific
– Debriefing (oral or written…good for factual)– Observation and scoring system (checklist
or score sheet or palm pilot)– Time to performance of specific task
Global– Simulated mortality as end-point– Time to solve problem
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How can we use How can we use simulation?simulation?
Skills trainingEvaluation
Epidemiology and modification of errors (and their consequences)
Crisis resource management
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Epidemiology of Medical Epidemiology of Medical ErrorError
Types of errors made during anaesthesia simulation
37%
17%13%
10%
33%
Monitor usageAirwaymanagementVentilatormanagementDrugadministrationOther
Schwid and O’Donnell Anesthesiology 1992
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Crisis Resource Crisis Resource ManagementManagement
Using all available resources during a crisis to achieve safety and efficiency– Information– Equipment– People
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Crisis Resource Crisis Resource ManagementManagement
Error countermeasures– Reduce the frequency of errors– Correct errors– Limit the impact of errors
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ResourcesResources Simulator PLUS operational budget Competency standards
– Who/what are you testing? Content experts
– Set objectives and clinical setting Simulation experts
– Translate objectives and clinical setting into functional simulation scenarios
AV equipment (debriefing)
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Limitations of simulationLimitations of simulationDifficult to demonstrate improved
outcome from use of simulation– Adverse events are unusual– Extreme number of potential
confoundersForced to use simulation
performance as surrogate outcome
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Initiatives at MSHInitiatives at MSH
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Initiatives at MSHInitiatives at MSHMock cardiac arrests
– ACLS protocols– Use of equipment– Systems issues (elevators, cancel
arrest)– Crisis resource management– Feedback/debriefing
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Initiatives at MSHInitiatives at MSHLife-saving delegated medical acts
– ICU/CCU nurses– Use of epinephrine/atropine– Defibrillation
Pre-ACLS interventions– Bag-valve-mask ventilation– Understanding respiratory failure and
shock
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Initiatives at MSHInitiatives at MSH Medical and Critical Care Residents Continuing education courses
– Difficult airway management– Advanced ARDS strategies
Technology evaluation– OCCIN Project
Multidisciplinary approachPortable
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Parting commentsParting comments Simulation is fun for students and
teachers You can use simulation technology as
an evaluation tool Choose the most appropriate tool for
achieving educational goals Remember basics of education,
otherwise simulator is an expensive toy