A Case of Atrial Tachycardia Circulating around a Left Atrial Roof Scar with Diabetes Mellitus and Renal Failure on Hemodialysis

Figure 1

(a) The left panel shows a 12-lead electrocardiogram (ECG) in sinus rhythm (SR) and the right panel shows that of atrial tachycardia (AT). (b) Intracardiac ECG during AT. T indicates the Halo catheter. Numbers 9-10 are the distal electrodes located at the lateral tricuspid annulus (TA). Numbers 19-20 are located at the anteroseptal TA. His 1-2 is the distal electrode of His. CS indicates the electrode catheter in the coronary sinus (CS). CS 1-2 is the distal electrode and CS 7-8 is located at the CS ostium. The dotted line indicates the earliest activity of AT recorded at CS 7-8.

(a)

(b)