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Table 2 Incidence of all types of arrhythmias either pre-operatively or post-operatively.

From: Implantable cardioverter-defibrillators improve survival after coronary artery bypass grafting in patients with severely impaired left ventricular function

Arrhythmia Type ICD+ ICD-
Pre-op Atrial 3 (8.57%) 42 (15.50%)
  Heart Block 0 (0%) 12 (4.43%)
  Ventricular 8 (22.85%) 30 (11.07%)
  Combined 0 (0%) 14 (5.17%)
Post-op Atrial 9 (25.71%) 86 (31.73%)
  Heart Block 0 (0%) 7 (2.58%)
  Ventricular 1 (2.86%) 15 (5.54%)
  Combined 0 (0%) 0 (0%)