B30 Patient Monitor
11-6
ECG Setup menu
Beat Sound Volume
Adjusts the pulse/heart beat sound volume (0 to 10). When the monitor has detected a QRS
complex or a pleth or pressure pulse, a beep tone is produced. You can raise, lower or turn off
the volume.
Adjusting beat sound volume affects also the beat sound volume of the HR source (ECG, Art or
Pleth).
When Pleth is monitored, the monitor provides a variable pulse beep, so that the tone of the
pulse beep rises with increasing oxygen saturation and falls with decreasing saturation. This
affects also the ECG tone.
HR Source
Selects the heart rate source (
AUTO
,
ECG, Art
,
ABP
or
Pleth
). When
ECG
is selected, HR is
always calculated from ECG. If the ECG signal is affected by too much noise for a reliable heart
rate calculation, pulse rate can be calculated from pressure (Art and ABP) or plethysmographic
pulse waveform. The selected heart rate source is displayed above the numerical display of the
heart rate. The color of the heart rate source indicator is the same as that of the source
parameter.
The
AUTO
selection priorities for heart rate calculation are: ECG, pressure (Art or ABP),
plethysmographic pulse waveform. The first heart rate source available is selected.
Display with HR
Select
PR
,
PVC
or
None
to display combined heart rate and pulse rate or heart rate and PVC
rate next to the ECG waveform. The current HR source is displayed with bigger font and the
heart rate symbol flashes next to the reading.
Filter
Filters the ECG signal high frequency noise and slow respiratory artifacts.
Monit
(monitor) filter effectively filters the artifacts caused by, for example, the electrosurgery
unit and respiration.
STfilt
(ST filter) permits more accurate information of the ST segment. It filters the high
frequency artifacts caused by the electrosurgery unit but catches the slow changes in the ST
segment. The ST filter is more susceptible to baseline wander than the monitor filter.
ECG
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