Legend: CCh - cardiac channelopathy
Sex - M: male / F: female
ICD - implantable cardioverter defibrillator
ACA - Aborted cardiac arrest
SCD - sudden cardiac death
FH - Family history (SCD or channelopathy)
NI - not identified
BT - Biotronik
SJ - ST Jude/ Abbott
MD - Medtronic
BS - Boston Scientific
Table 2. Medium Heart Rate, density of ventricular arrhythmias
and ICD therapy of the sample during study periods