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
Measuring Rate and AV Interval
The Measure ECG test lets you directly measure the pacemaker output
parameters listed below. The measurement for each parameter is averaged
over several pacing cycles.
Dual Chamber Modes
Single Chamber Mode
Pacing Rate Pacing Rate
Paced AV Interval Pacing Interval
Pacing Interval
NOTE: For Prodigy pacemakers, this function does not include measure-
ment of pulse width.
Measurement Using the ECG Signal — If the patient’s ECG is present,
the programmer determines the values for each of these parameters from
data processed from the ECG signal.
Measurement Using Marker Channel Telemetry — If the ECG signal is
not present, and the programming head is positioned over the pacemaker,
the programmer will attempt to measure rate and interval using Marker
Channel telemetry.
NOTE: If the pacemaker is not operating asynchronously (magnet mode),
inhibition of the output by intrinsic activity can affect or prevent proper
measurement. Positioning the programming head without use of the Cancel
Magnet function is recommended when you use this function.
Initiating Parameter Measurement
To initiate measurement of the output parameters, select the [
TESTS
/
ECG
]
menu button, and then select the
MEASURE ECG
option as illustrated below.
Selecting the
MEASURE ECG
option displays the Measure screen and auto-
matically starts the parameter measurement process. Measured values, as
shown in the example on the next page, will not appear on the screen for
about 10 seconds. The message box will state the source of the measured
values, ECG or Marker Channel.
1. Select [ TESTS
/
ECG ]
menu button.
2. Select
MEASURE ECG
option.
Determining and Evaluating Parameter Settings 7-33