User Manual Part 3

PATIENT DIAGNOSTICS
ARRHYTHMIA LOGBOOK
7-11
Intervals
The pulse generator stores event markers and associated time stamps. The
PRM derives event intervals from the event markers and time stamps.
To view the episode intervals, use the following steps:
1. From the Stored Event screen, select the Intervals tab. If all of the episode
data is not visible in the window, use the scroll bar to view more data.
2. Select the Prev iou s Event o r the Next Event but to n to display a previous
or more current episode, one episode at a time.
3. Select the Print Event button to print the entire episode report.
4. Select the Save to Disk button to save the entire episode report to a patient
data d isk.
Histograms
The Histograms feature retrieves information from the pulse generator and
displays the total number and percentage of paced and sensed events for
the chamber.
Histograms data can provide the following clinical information:
• The distribution of the patient’s heart rates
• How t he ratio of paced to sensed beats varies by ra te
• How the ventricle responds to paced and sensed atrial beats across rates
When combined with verified biventricular capture, Histograms can be used to
determine the amount of CRT delivery. The percentage of paced and sensed
ventricular e ve nts indicates delivery of biventricular pacing.
Use the following steps to access the Histograms screen:
1. From the Events screen, select the Patient Diagnostics tab.
2. The initial display shows the paced and sensed data since the last time the
counters were reset.
- DRAFT -