ISSN: 1885-5857 Impact factor 2023 7.2
Vol. 69. Num. 6.
Pages 610 (June 2016)

Ecg contest
Response to ECG, May 2016

Respuesta al ECG de mayo de 2016

Víctor Bazán
Rev Esp Cardiol. 2016;69:51810.1016/j.rec.2015.12.018
Víctor Bazán

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The patient has second-degree atrioventricular (AV) block alternating with slowly-conducted P waves (long PR) via an intermittent left accessory pathway. The existence of this pathway avoids potential prolonged asystole due to advanced atrioventricular block. After pacemaker implantation, paced rhythm alternated with conduction via the pathway, which disappeared over time (Figures 1–3).

Figure 1
(0.11MB).
Figure 2
(0.21MB).
Figure 3
(0.17MB).
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