Why do I have AFib with a pacemaker?

It’s your heart’s natural pacemaker. It generates the electrical pulses that tell your heart to beat. When the sinus node fires off the signals at the wrong pace, your heartbeat can be too fast (tachycardia), too slow (bradycardia), or irregular (arrhythmia). It can lead to abnormal heart rhythms, including AFib.

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Can a pacemaker cause fluttering?

Development of atrial fibrillation or flutter in patients with a dual chamber pacemaker (in the setting of complete heart block) leads to pacemaker mediated tachycardia . Atrial rhythm is sensed by the atrial lead, which triggers ventricular pacing at the maximal preprogrammed rate.

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