they document the ultimate and often fatal stage of the cardiac disorders of this syndrome , which was usually related to an asystole due to a total atrio-ventricular block and represented in this case by a ventricular hyperexcitability ( ventricular tachycardia -- '' '' torsade de pointes '' '' -- ventricular fibrillation ) occurring on an atrio-ventricular block ;
C0018799
of
C0018790
asystole