Severe arrhythmia in group 3 (glycemia > 180 mg / dl) was almost twice as high as in group 2 (glycemia 141 - 180 mg / dl) and group 2 was 6.7 times higher than that in group 1 (glycemia ≤ 140 mg / dl) (20.0% and 18.2% compared to 2.7%); Cardiac shock in group 3 was almost twice as high as in group 2 and group 2 was 8.6 times higher than that in group 1 (13.3% and 12.1% compared to 1.4%).