67 results
Loss of Consciousness in Syncope - Differential Diagnosis Framework

Syncopal causes:
• Orthostatic syncope
• Reflex syncope
• Cardiac arrhythmia
•
- Differential ... causes: • Orthostatic ... syncopeReflex ... Nonsyncopal causes ... #LOC #differential
Syncope - Cerebral hypoperfusion leading to transient lsos of consciousness causing alck of postural tone with
immediate recovery Differential ... Orthostatic (4-24%) • Reflex ... cause (8-20%) ... • Unclear cause ... #differential #
Syncope - Differential Diagnosis Framework
Reflex Syncope:
• Vasovagal: Prolonged standing, Stress, Pain
• Situational: Coughing, Sneezing, Micturition, Defecation,
Syncope - Differential ... Diagnosis Framework Reflex ... bradycardia, Sinus pauses ... • Mechanical: Aortic ... #Differential #
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
Shock - Differential ... Classification Reflex ... Mechanical • Aortic ... #Differential # ... Classification #Table #Causes
Syncope - Differential Diagnosis
The percentage of syncopal events secondary to arrhythmias or structural disease is generally
Syncope - Differential ... percentage of syncopal ... cardiopulmonary • Aortic ... #differential # ... diagnosis #causes
Pulse Abnormalities - Differential Diagnosis Algorithm
Unequal/DeIayed:
 • Obstructive arterial disease (ie. Atherosclerosis)
 • Aortic dissection
 •
Pulse Abnormalities ... - Differential ... - Variation in pulse ... Disorders #Cardiology #Differential ... Diagnosis #Algorithm #causes
Syncope is a sudden, transient loss of consciousness, which is thought to be secondary to cerebral
frequently benign causes ... such as reflex ... (ruling out differential ... In many cases, syncope ... depends on the cause
Causes of Wide Pulse Pressure - Differential Diagnosis
Physiologic:
 • Advanced age-arteriosclerosis (less compliant arteries)
 • Well
Causes of Wide Pulse ... Pressure - Differential ... disorders: - aortic ... regurgitation - aortic ... #Diagnosis #causes
Widened Pulse Pressure - Differential Diagnosis and Pathophysiology

Pulse pressure is the difference between the systolic blood
- Differential ... Physiologic Causes ... Pathologic Causes ... disorders: - Aortic ... regurgitation - Aortic
Aortic Dissection Pearls
Aortic dissection is caused by a tear in the tunica intima, the innermost layer
Aortic Dissection ... is caused by a ... Consider aortic ... Examine for: • Pulse ... deficit/differential