Bradycardia

Bradycardias are categorized as follows

Sinus node dysfunction

• Sinus node exit block
• Sinus arrest

AV-Block

• First degree AV block
• Second degree AV block
• Mobitz I (Wenkebach)
• Mobitz II
• Third degree AV block

Ventricular conduction block

• RBBB
• LBBB
• LAFB
• LPFB
• Bifasicular block
• Trifasicular block