S12 Vet Monitor User’s Manual
13-7
1. Select the IBP parameter area or waveform area to enter the corresponding
pressure menu.
2. Select【Setup】submenu.
3. Make the following settings for the IBP waveform:
Set【Speed】.
Set 【Scale Type】: If 【Auto】 is selected, the upper and lower scales
of the IBP waveform will be automatically adjusted as the waveform
amplitude changes.
13.5.6. Turn on PPV measurement
PPV is the pulse pressure variation. When measuring arterial pressure (excluding PA),
you can turn on PPV measurements, following these steps:
1. Select the IBP parameter area or waveform area to enter the corresponding
pressure menu.
2. Select【PPV】submenu.
3. Set【PPV Measurement】 to 【ON】.
When 【PPV Measurement】 is setting to 【ON】, the source of the PPV can
be selected.
WARNING:
The monitor will calculate the PPV based on any arterial pressure value
between heartbeats. The conditions of PPV measurement, and whether the
PPV numerical calculation has clinical significance or not, it is applicable or
not. It must be judged by a doctor.
Only a doctor can determine the clinical value of PPV information. According
to recent scientific literature, the clinical relevance of PPV information is
limited to controlled mechanical ventilation and to sedated patients without
arrhythmias.
The calculated PPV value may not be accurate under the following conditions:
a) Respiration rate is less than 8 rpm
b) During venting, the tidal volume is less than 8ml/kg
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