Assertion: pacemaker's activity | /r/HasAspect | such limit
Facets:
Source sentences:
text: In all pacing modes, a lower rate limit indicates the rate below which pacing occurs (this is the slowest heart rate that should be present, although some features and algorithms may permit programmable exceptions), and an upper rate limit indicates the fastest rate at which the pacemaker will pace, although intrinsic cardiac activity has no such limit.