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{{familytree/start |summary=PE diagnosis Algorithm.}}
{{familytree/start |summary=PE diagnosis Algorithm.}}
{{familytree | E01 | | E02 | | | E05 | | | E03 | | E04 |E01=|E02=|E05=|E03=|E04=}}
{{familytree | E01 | | E02 | | | E05 | | | E03 | | E04 |E01=[[Venous]] depletion/pooling|E02=[[Arrhythmia]] or [[Structural heart disease]]|E05=Vasodepressors/Cardioinhibitors|E03=[[Drugs]]|E04=Autonomic nervous failure}}
{{familytree | |!| | | |!| | | | |!| | | | |!| | | |!| | }}
{{familytree | |!| | | |!| | | | |!| | | | |!| | | |!| | }}
{{familytree | D01 | | D02 | | | D05 | | | D03 | | D04 |D01=Inadequate renous return|D02=[[Cardiac]]/[[Pulmonary]] cause|D05=Inappropriate reflex|D03=|D04=}}
{{familytree | D01 | | D02 | | | D05 | | | D03 | | D04 |D01=Inadequate [[venous]] return|D02=[[Cardiac]]/[[Pulmonary]] cause|D05=Inappropriate reflex|D03=Normal '''ANS'''|D04=Damaged '''ANS'''}}
{{familytree | |`|-|v|-|'| | | | |!| | | | |`|-|v|-|'| | }}
{{familytree | |`|-|v|-|'| | | | |!| | | | |`|-|v|-|'| | }}
{{familytree | | | B01 | | | | | B03 | | | | | B02 | | |B01=Low [[cardiac output]]|B03=Low [[cardiac output]]/Low [[peripheral resistance]]|B02=Low [[peripheral resistance]]}}
{{familytree | | | B01 | | | | | B03 | | | | | B02 | | |B01=Low [[cardiac output]]|B03=Low [[cardiac output]]/Low [[peripheral resistance]]|B02=Low [[peripheral resistance]]}}
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{{familytree | | | | | | | | | | A01 | | | | |A01='''Syncope'''}}
{{familytree | | | | | | | | | | A01 | | | | |A01='''Syncope'''}}
{{familytree/end}}
{{familytree/end}}
<small><small>
'''Abbreviations:''' '''ANS''': Autonomic nervous system
</small></small>
{| class="wikitable"
{| class="wikitable"
|+
|+

Revision as of 20:29, 21 April 2020

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


 
 
 
 
 
 
 
 
 
Pathophysiology of Syncope
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cerebral hypoperfusion
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Low cardiac output
 
 
 
 
Low cardiac output/Low peripheral resistance
 
 
 
 
Low peripheral resistance
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Inadequate renous return
 
Cardiac/Pulmonary cause
 
 
Inappropriate reflex
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 



Venous depletion/pooling
 
Arrhythmia or Structural heart disease
 
 
Vasodepressors/Cardioinhibitors
 
 
Drugs
 
Autonomic nervous failure
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Inadequate venous return
 
Cardiac/Pulmonary cause
 
 
Inappropriate reflex
 
 
Normal ANS
 
Damaged ANS
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Low cardiac output
 
 
 
 
Low cardiac output/Low peripheral resistance
 
 
 
 
Low peripheral resistance
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cerebral hypoperfusion
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Syncope
 
 
 
 

Abbreviations: ANS: Autonomic nervous system

Common Causes of Sick sinus syndrome
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Images

Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia


Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia


Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia


Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia


Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia


Contrast enhanced CT: Aortic intramural hematoma, Courtesy of radiopaedia




Disease Name Age of Onset Gender Preponderance Signs/Symptoms Imaging Feature(s) Macroscopic Feature(s) Microscopic Feature(s) Laboratory Findings(s) Other Feature(s) ECG view