Fukuda Denshi LX-7120, Руководство по эксплуатации

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8. Other Setting Items
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Changing the Detection Sensitivity of the Pacemaker Pulse
The default setting of pacemaker pulse detection sensitivity is “Mid”.
The “Mid” setting can detect and reject the following pacemaker pulse
specified in ANSI/AAMI EC13 standard.
Detection/ Rejection of Pacemaker Pulse:
a) Pacemaker Pulse without Over/Undershoot:
Capable to reject pulses of pulse width 0.1 to 2ms,
amplitude ±2 to ±700mV
b) Pacemaker Pulse with Over/Undershoot:
Rejection is not possible.
Fukuda Denshi recommends the “Mid” setting in normal use.
There may be some cases when the pacemaker pulse cannot be detected
depending on the pacemaker type, pulse voltage, pulse width, electrode lead
type (unipolar, bipolar). In this case, change the lead or the position of the
electrodes to be able to detect the pacemaker pulse.
Nonetheless, if the detection is still undetectable, change the setting to “High”
in order to increase the detection sensitivity. So that smaller pacemaker pulse
can be detected. However, the “High” setting may lead to erroneous detection
due to interference noise, such as AC frequency.
If erroneous detections occur due to interference noise, such as AC frequency,
turn OFF the setting of the pacemaker pulse detection in the receiving monitor.
If erroneous detections occur due to interference noise, such as AC frequency,
while monitoring a patient with a pacemaker, and the setting of the pacemaker
pulse detection cannot be turned OFF, replace the electrodes or change the
lead to remove the interference noise, such as AC frequency.
Nonetheless, if erroneous detections still occur, change the setting to “Low” in
order to decrease the detection sensitivity. It makes the LX-7120 less likely to
be interfered by the noise, such as AC frequency.
The “Low” setting decreases the detection sensitivity. Therefore, it cannot
detect the pacemaker pulse specified in ANSI/AAMI EC13 standard.
For details of the setting change, contact your local Fukuda Denshi service
representative.
CAUTION
The LCD screen in normal use does not indicate the setting status of the
pacemaker pulse detection. Make sure to take measures, such as marking
on the LX-7120, to distinguish whether the setting of the pacemaker pulse
detection is changed.