Pacemaker follow up in a patient with congenitally corrected transposition of the great arteries
A 34 year old male with a history of congenitally corrected transposition of the great arteries (ccTGA) had a dual chamber pacemaker implanted for complete heart block (CHB) in 2012. Since implant pacemaker follow-ups have been unremarkable. The underlying rhythm has been consistently reported as complete heart block (CHB) with a junctional escape rhythm. The most recent follow-up showed 27 mode switch (MS) episodes with no recorded electrograms (EGMs) available for review. When performing routine testing to assess for an underlying rhythm the episode below occurred and was stored.
Stored electrogram – atrial electrogram and marker channel. No ECG attached.