C
18 E
HAPTER
XTERNAL
4 Set Mode
Use the arrow keys to navigate to Mode, press the Select button, and then use the arrow keys
and the Select button to set the Pacer Mode to Demand.
Note:
5 Set Pacer Rate
Use the arrow keys to navigate to Rate, press the Select button, and then use the arrow keys and
the Select button to set the Pacer Rate to a value 10-20 ppm higher than the patient's intrinsic
heart rate. If no intrinsic rate exists, use 100 ppm. You can increase or decrease the pacer rate
by a value of 5 ppm for rates below 100, and by 10 ppm for rates above 100.
Note:
6 Turn On Pacer
Use the arrow keys to navigate to Start Pacer, then press the Select button to select it. The
Pacing window displays behind the Pacer Settings window.
PACING
Rate
80
7 Set Pacer Output
In the Pacer Settings window, use the arrow keys and the Select button to adjust the pacer
output. The pacer output is adjustable in 10 mA increments when increasing the output, and in
5 mA increments when decreasing the output. Observe the ECG for evidence of electrical
capture. Select the lowest output current that achieves both electrical and mechanical capture.
Note:
8 Determine Capture
It is important to recognize when pacing stimulation has produced a ventricular response
(capture). Determination of capture must be assessed both electrically and mechanically in
order to ensure appropriate circulatory support of the patient.
Electrical capture is determined by the presence of a widened QRS complex, the loss of any
underlying intrinsic rhythm, and the appearance of an extended, and sometimes enlarged,
T-wave.
Ventricular response is normally characterized by suppression of the intrinsic QRS complex.
18–4
P
ACING
The initial pacing mode can be set in Defib/Pacer Default settings in the Supervisor
Setup menu.
The initial pacing rate can be set in Defib/Pacer Default settings in the Supervisor
Setup menu.
ppm
If the Pacer Settings window disappears before you have set the output current, press
the Pacer button again to display the settings window.
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Output
95
mA
Mode
Demand
9650-0806-01 Rev. D