Transient loss of postural tone and consciousness due to cerebral hypoperfusion<unk>  and pre-syncope assessed similarly
Important considerations:
Is this true<unk>  or something else (eg, stroke, seizure, head injury)?
If this is true<unk> , is there a clear life-threatening cause?
If this is true<unk>  and the cause is not clear, is the patient at high risk for serious outcome?
Is this true<unk>  or something else (eg, stroke, seizure, head injury)?
If this is true<unk> , is there a clear life-threatening cause?
If this is true<unk>  and the cause is not clear, is the patient at high risk for serious outcome?
Exertion preceding the event
Note that<unk>  during exertion much more concerning than<unk>  after exertion
No preceding symptoms
Concerning for cardiac dysrhythmia
History of cardiac disease in the patient
Family history of sudden death, deafness, or cardiac disease
Consider unexplained deaths and deaths due to single vehicle accidents
Recurrent episodes
Recumbent episode
Prolonged loss of consciousness
Associated chest pain, shortness of breath or palpitations
Use of medications that can alter cardiac conduction
Note that<unk>  during exertion much more concerning than<unk>  after exertion
Concerning for cardiac dysrhythmia
Consider unexplained deaths and deaths due to single vehicle accidents
Syncope
Cardiovascular-mediated syncope
Laryngospasm
Dysrhythmias:
Chest pain 
WPW 
Sedation 
Long QT Syndrome/QT prolongation