Dräger Infinity M540 - Page 318

Invasive blood pressure (IBP)
318 Instructions for use – Infinity Acute Care System – Monitoring Applications VG6.n
To start a wedge measurement
 Select the PA parameter field (if displayed) >
select the Start wedge button.
or
1 Select the Procedures... button from the main
menu bar.
2 Select the Wedge tab (if not already selected).
3 Verify that the PA catheter has been properly
inserted.
4 Select the Prepare wedge button (A). The
following happens:
– PA alarms are deactivated temporarily
– The message Inflate balloon. Press
"Wedge" to Start. appears in the message
field (F). Only the PA mean value appears in
the parameter field (the diastolic/systolic
values are blanked).
– The button Start wedge appears.
5 Use the Scale button (I) to change the scale, if
necessary.
6 Use the Sweep speed [mm/s] (J) button to
select a different sweep speed for the
waveform, if necessary.
7 Use the Reference waveform button (K) to
select a reference waveform (available settings:
None, RRi).
8 Select the Start wedge button (B).
– The message Wedge in progress appears
in the message field (F).
– A new PWP value calculated during the next
10 seconds appears. An attention tone
sounds at the end of the calculation when
the feature is activated (see page 445).
Also, the message Deflate balloon and
press "Save wedge" to finish appears in
the message field (F).
– The PA and reference waveforms are
stopped, and the message Waveforms
stopped appears above the PA scale in the
display window (H).
– A horizontal cursor is drawn through the PA
waveform.
9 Select one of the following buttons:
– Freeze/ Adjust button (C) to alter the PWP
value manually.
– Save wedge button (D) to save the new
value (it is stored in the trend function)
– Cancel wedge (E) to cancel the
measurement.
After a successful wedge measurement, the PA
and respiratory waveforms resume their previous
size and sweep speed. PA systolic and diastolic
values are displayed again, and PA alarms are
restored to the values before entering wedge
mode.
NOTE
If configured to appear on the main menu bar, the
Start wedge button is also accessible on the main
menu bar. For more information, see page 452.