Specifications

7 x 9 inches (178 mm x 229 mm)
Medtronic Confidential
Refer to the “Reference man.” category in doc#163256 for Printing
Instructions.
196407001 Rev A
Rate Histogram
Overview
The Rate Histogram counts and collects atrial and/or ventricular events and
classifies them by rate range and the percentage paced out of the total beats
counted. This diagnostic is intended for ambulatory monitoring uses,
including the following:
■
assessing chronotropic incompetence
■
monitoring rate distribution
■
evaluating programmed rate response parameters
Data Collection
The Rate Histogram counts all paced and sensed atrial and/or ventricular
events. The event counts and percentage paced information are recorded in
event groups (bins) between the rates of 45 and 185 ppm. Events at rates
below 45 ppm are counted in the lowest event group; rates above 185 ppm
are counted in the highest event group. Refractory sensed events can be
included or excluded by programming the desired option. The collection
period for the Rate Histogram is indicated by the starting and ending dates.
NOTE: In dual chamber modes, some events below the programmed
Lower Rate may be recorded on the ventricular histogram when intrinsic
activity alternates with Lower Rate pacing. This is normal with A-A
timing.
Each Rate Histogram bin can store several years of event data. Data
collection ceases when any rate bin is filled.
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