Enable/Disable Pacing - Abbott Merlin PSA EX3100 Help Manual

View and Store Lead Impedance Measurements (page 17).

Open the Capture Test (page 18) window. Perform a Capture Test (page 18).

Perform a Phrenic Nerve Stimulation Check (page 19).

Annotate Test Results (page 19).

In CRT devices, select the connected Ventricular Sensing Buttons (page 20) channel.

Print a report. Select the Print button. See Print Menu (page 32).

End a Merlin™ PSA Session (page 15).

Return to the device session with the Programmer button. See Suspend the Merlin™ PSA

Session (page 15).
Accessed From: Lead Tests button
NOTE: Pacing. Stimulation applied during the PSA session is ONLY intended for use during
short-term lead evaluation tests and IS NOT intended for long term life-sustaining pacing
support.

Enable/Disable Pacing

Select the Pacing toggle button to turn pacing on or off for the corresponding channel. When you
enable or disable pacing for a particular channel with the Pacing button, the Merlin™ PSA
automatically changes the Mode and V. Pacing settings, depending on the pacing status of other
channels (see Table 1 and Pacing, Mode, and V. Pacing Parameter Autoprogramming below).
You can also select a different setting for the Base Rate and Additional Parameters.
You must enable pacing to measure lead impedance and capture threshold.
To enable pacing with the Pacing button, the Mode must be set to ODO, VVI, AAI, or DDD. The
Pacing button does not operate in AOO, VOO, VDD, DOO, or DDI modes.
See also: Mode Descriptions (page 24).
NOTE: When noise, defined as activity sensed by the Merlin PSA in a refractory period, is
detected, the Merlin PSA switches to asynchronous pacing at the programmed Base Rate in
that channel until noise disappears.
CAUTION: Leaving the atrial connector disconnected when the Merlin PSA is in DDD or
VDD modes may result in the unit sensing external noise and increasing the ventricular
pacing rate to the Max Track Rate.
Pacing, Mode, and V. Pacing Parameter Autoprogramming
The Pacing, Mode, and V. Pacing parameters are linked, so that a change to one parameter
results in automatic changes to the other two. For example, enabling Pacing in the atrial channel
(when ventricular pacing is off) changes the Mode setting from ODO to AAI. Similarly, changing
the Mode from AAI to DDD will turn on Pacing in the ventricular channel (or in a CRT device, the
ventricular channels designated by the V. Pacing parameter). In CRT devices. changing the V.
Pacing setting from RV Only to Simultaneous enables pacing in the LV channel (if the Mode
parameter is set to DDD or VVI).
The following table shows how the Merlin™ PSA is programmed for all combinations of the
Pacing, V. Pacing, and Mode parameters.
Table 8. Changes to Mode and V. Pacing settings when pacing is enabled (On) or disabled (Off)
in a particular channel
16