HR < 60
Intervention only necessary if patient is symptomatic (CASH gets the JOULES = chest pain, altered mental status, shortness of breath, hypotension)
ACLS: Bradycardia
Cardiac
PALS: Bradycardia
Inferior MI 
ACLS: Tachycardia
Sick sinus syndrome
PALS: Tachycardia
Neurocardiogenic/reflex-mediated