Assertion: cardiac arrhythmia | /r/IsA | ventricular arrhythmias
Facets:
value: sometimes
type: TEMPORAL
value: according to their origin
type: OTHER
Source sentences:
text: Cardiac arrhythmias sometimes are classified according to their origin as either ventricular arrhythmias (originating in the ventricles) or supraventricular arrhythmias (originating in heart areas above the ventricles, typically the atria).