DATREND Systems vPad-A1, Руководство по эксплуатации

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vPad-A1 OPERATORS MANUAL
4.5.2.3 Intra-Uterine Pressure
Fetal monitoring devices measure
Intra-Uterine Pressure
(
IUP
) with invasive
pressure probes similar in principle to IBP sensors. When the
IUP
option is
selected from the upper list of the simulation menu, the module generates
dynamic pressure signals which are synchronized to a
Fetal ECG
waveform.
Together, the
IUP
and
ECG
signals represent the physiological state of a
neonate during labour contractions.
Touching the second dropdown list shows all applicable parameters:
Pressure-ECG Timing
,
Pressure Waveform
, and
Contraction Frequency
.
Note
: When
IUP
is active, the module overrides the normal
ECG
settings to output a special
Fetal
ECG
waveform. Attempts to change
ECG
settings will have no effect until a different
IBP
simulation (
Static
or
Dynamic
) is selected.
Pressure-ECG Timing selects a pre-defined synchronization pattern which is
then used for the current simulation. When vPad-A1 generates an
IUP
waveform, it also changes the pulse
Rate
of
Fetal ECG
so that the fetal
monitor can plot a “rate waveform/trend” that has the same period as the
pressure wave. Depending on the active
Pressure-ECG Timing
pattern, the
“rate waveform” drop may lead or lag peak of the
IUP
pressure wave, or the
Rate
may increase or decrease from the starting
Rate
.
The
Pressure Waveform
setting controls the peak height of the pressure
waveform. Available options are 50 mmHg and 90 mmHg.
The
Contraction Frequency
setting controls the length of time between the
start of each contraction pressure wave: 2 minutes, 3 minutes, or 5 minutes.
If the “Single Contraction” option is chosen instead, users must manually
start each contraction by pressing the
button.
Figure 60
Figure 61
Figure 62
Manual Operation/Chapter 4
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