Address for Correspondence: Sok-Sithikun Bun, Pasteur University Hospital, Nice, France
Email: email@example.com Phone : +377 97 98 97 71 – Fax : + 377 97 98 97 32
The following 12-lead electrocardiogram (ECG) tracing is provided from a 72 years old male patient implanted with a dual-chamber pacemaker (Medtronic Astra DR), when applying a magnet. He underwent three previous persistent atrial fibrillation and atrial tachycardia radiofrequency ablations, and an additional atrioventricular node ablation procedure (left ventricular ejection fraction 45%). The patient does not report any cardiovascular symptom.
Figure 1. A 12-lead electrocardiogram recording
1. The pacing leads have been connected to the incorrect port of the pacemaker.
2. There is a ventricular lead dysfunction because the second spike is not followed by any paced ventricular complex.
3. Fusion between native QRS and paced QRS is present as QRS complexes are narrow.
4. This tracing demonstrates normal magnet response to this pacing system.
5. The patient is in sinus rhythm
Sok-Sithikun BUN1, Abdelkarim Errahmouni²
1Pasteur University Hospital, Nice, France
²Dupuytren University Hospital, Limoges, France
Conflict of interest: None to declare
Authorship: S.S.B. and A.E. equally contributed to preparation of quiz
Acknowledgement and funding: None to declare