By Prof. Dr. Muhammed Usama

Consultant cardiologist, NHI

Bradyarrhythmias and

Malfunctioning Pacemakers

Sinus Bradycardia

AF with slow ventricular

response

First degree

heartblock

Second degree HB (Mobitz I)

Mobitz II HB

2nd degree HB (Mobitz II) 3:1

block

Complete HB

AF with slow ventr.

response

Bradycardia induced VT

Well functioning VVI

Well functioning DDD

Fusion beats with miscapturing VVI

Oversensing DDD

Undersensing VVI