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  |  | (Cavazza, 2003) The
  appearance of the patient varies according to his or her vital signs during
  the coronary emergency.  The input to
  this appearance includes the patient’s Heart Rate (HR) and Mean Arterial
  Pressure (MAP).  Complimentary
  examinations reveal other parameters. 
  For example, if a cardiac catheterization is performed, the trainee
  can obtain Pulmonary capillary pressure (Pcap). 
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  |  | Instructions to the
  virtual nurses are performed via speech recognition using a simple command
  language.  This language is comprised
  of a simple command language and its parameters.  For example, a command might be “Inject
  drug {Drug name, dosage}”. 
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  |  | An initial state of
  clinical conditions is given to begin the event.  These conditions propagate to a reaction
  set of symptoms requiring diagnosis. 
  When a treatment is given, the symptoms are updated until a steady
  state is reached. 
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