Presentation as:
Cardiac arrest
Palpitations
(Pre)Syncope
ICD patient complaining of shock(s)
Cardiac arrest
Palpitations
(Pre)Syncope
ICD patient complaining of shock(s)
Type of Ventricular Arrhythmias  
Monomorphic VT   86-97%
Primary VF       1-21%
Mixed VT/VF      3-14%
Polymorphic VT   2-8%
Monomorphic VT   86-97%
Primary VF       1-21%
Mixed VT/VF      3-14%
Polymorphic VT   2-8%
Electrical storm
Assume any wide-complex tachycardia is ventricular tachycardia until proven otherwise 
Heat stroke
Regular
Undifferentiated shock
Monomorphic ventricular tachycardia
Undifferentiated shock 
PSVT with aberrant conduction: