Intrinsic Signal Amplitude And Slew Rate Measurements; Lead Impedance Measurements - Abbott Merlin PSA EX3100 Help Manual

A Pacing RV Pacing
Off Off
Off Off
Off On
Off On
On Off
On Off
On On
On On
Accessed From: Lead Tests button

Intrinsic Signal Amplitude and Slew Rate Measurements

CAUTION: Ensure the lead is connected to the appropriate channel. If you
inadvertently reverse the connections, the Merlin™ PSA may deliver inappropriate or
harmful stimulation and display inaccurate intrinsic signal measurements.
The Intrinsic Signal Amplitude measures the P/R-wave baseline-to-peak. To retrieve an intrinsic
signal amplitude and a slew rate measurement:
1. Confirm that the patient has intrinsic activity.
The real-time intrinsic signal amplitude and slew rate measurements are shown on the
P/R-wave Slew Rate button and as Markers on the Rhythm Display. If an intrinsic rhythm is
not sensed within 2 seconds, the button shows "---".
2. Press the P/R-wave Slew Rate button.
The Merlin PSA saves the measurements and displays them to the right of the button. Each
time you press the P/R-wave Slew Rate button, the saved measurement is shown to the right
of the button.
You can view and store intrinsic signal amplitude and slew rate measurements for each
channel as many times as desired. Up to five measurements for each channel are saved and
can be included in the PSA report. Once five measurements for a single channel are saved,
the next measurement saved for that channel replaces the oldest saved measurement for
that channel.
When you initially enable pacing for a particular channel, the Merlin PSA measures and saves the
most recent intrinsic signal amplitude and slew rate, unless the measurements have been
previously saved.
Accessed From: Lead Tests button

Lead Impedance Measurements

When you initially enable pacing for a particular channel, the Merlin™ PSA measures and saves
the lead impedance result.
The Merlin PSA displays the real-time impedance measurements on the Impedance button and
the most recently saved measurements to the right of the button. You can also see the impedance
measurement in the Rhythm Display. The Merlin PSA updates the measurement with every beat.
If there is no paced pulse within two seconds, the button shows "---".
You can also measure impedance in an asynchronous mode, such as AOO, VOO, and DOO.
LV Pacing Mode Setting
Off ODO
On VVI
Off VVI
On VVI
Off AAI
On DDD
Off DDD
On DDD
17
V. Pacing Setting
n/a
LV Only
RV Only
Biventricular
n/a
LV Only
RV Only
Biventricular