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. 2023 Aug 27;13(17):2724. doi: 10.3390/ani13172724

Figure 1.

Figure 1

Base–apex ECG (a–c) with paroxysmal atrioventricular block (PAVB) of a donkey. (a) Spontaneous onset of PAVB and restoration of atrioventricular conduction after a duration of 41 s. The episode of PAVB ended with a ventricular escape beat (arrowhead). During the PAVB, the atrial frequency was accelerated. Motion artifacts indicate a syncope (dotted arrow). (b) Initial section of a PAVB. (c) Final section of a PAVB with one ventricular escape beat (small arrow). There was a 2:1 AV conduction after restoring AV conduction (large arrows indicating p waves).