Philips MX400 - Measuring IAP; Manual Entry; Using a Pressure Waveform; Measuring Pulmonary Artery Wedge Pressure

12 Monitoring Invasive Pressure
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Measuring IAP
There are two methods to store IAP measurement readings in the monitor: with manual entry or using
a pressure waveform.
NOTE
For both methods, to be able to use the label IAP, it must be made available for manual entry in
Configuration Mode. For more details on manually entered measurements, see “Entering
Measurements Manually” on page 46.
Manual Entry
This method uses a reading from an independent IAP measurement device, for example a bladder
manometer; the user manually transcribes the IAP reading to the monitor.
To manually enter the measured IAP value:
1 Select the IAP numeric on the screen.
2 Enter the IAP value and select Enter using the numeric keypad.
3 If you need to change date and time, select Date/Time. The default is always the current date and
time. Select
Enter to confirm.
4 Select Save.
Using a Pressure Waveform
This method uses an electronic reading from a pressure transducer connected to the monitor. The
pressure transducer usually acquires the IAP from a dedicated IAP measurement device.
To enter the IAP using a connected IAP measurement device:
1 Assign the pressure label P (or P1…P8) to the pressure channel connected to the IAP transducer.
2 Zero the transducer as described in “Zeroing a Pressure Measurement” on page 215.
3 Perform the IAP measurement according to the instructions given by the manufacturer of the IAP
measurement device.
4 On the monitor screen, when the IAP pressure has stabilized, select the pressure waveform and
select
Activate Cursor.
5 Use the arrow up/down keys to move the wave cursor to an area of the waveform that reflects the
correct pressure. See “Using the Wave Cursor” on page 217 for details.
6 Select Save as IAP. This will store the IAP pressure value under the cursor in the monitor’s
database and display it on the monitor screen.
Measuring Pulmonary Artery Wedge Pressure
Pulmonary Artery Wedge Pressure (PAWP) values, used to assess cardiac function, are affected by:
• Fluid status
• Myocardial contractility
• Valve and pulmonary circulation integrity
Obtain the measurement by introducing a balloon-tipped pulmonary artery flotation catheter into the
pulmonary artery. When the catheter is in one of the smaller pulmonary arteries, the inflated balloon