the afterdepolarizations were closely related to arrhythmias : ( 1 ) afterdepolarizations always preceded ventricular arrhythmias , ( 2 ) the coupling intervals ( ci ) of the afterdepolarizations ( ad ) and the ventricular premature beats ( vpb ) were nearly identical ( vpb ci = 1.06 ad ci -10.24 ; r2 = .87 ) , ( 3 ) the take-off potentials of the ventricular premature beats were nearly identical to the amplitude of the afterdepolarizations ( take-off potential = 0.98 afterdepolarization amplitude +0.46 , r2 = .87 ) , and ( 4 ) afterdepolarizations and ventricular arrhythmias resolved concurrently during overdrive pacing and with time .
C0003811
arrhythmias
C0085612
ventricular arrhythmias