![Dräger Infinity Acute Care System M540 Instructions For Use Manual Download Page 315](http://html.mh-extra.com/html/drager/infinity-acute-care-system-m540/infinity-acute-care-system-m540_instructions-for-use-manual_2526773315.webp)
Instructions for use – Infinity Acute Care System – Monitoring Applications VG6.n
315
Invasive blood pressure (IBP)
Pulmonary wedge pressure
When the M540 is docked, you can calculate a
pulmonary wedge pressure (PWP) from the Hemo4
pod, Hemo2 pod, and the MPod – QuadHemo. You
can also calculate a wedge pressure from the
Wedge
page on the Cockpit (see page 318). You
cannot request wedge pressures from the M540.
During PWP measurements, only the mean PA
pressure is displayed.
WARNING
For the safety of the patient keep the balloon-
inflation time to the minimum necessary to
acquire an accurate PWP value. Prolonged
inflation of the balloon can result in
pulmonary hemorrhage or infarction.
WARNING
The PA catheter may move into the wedge
position before the balloon is inflated. One
sign of this “catheter drift” is that the PWP
waveform becomes wedge shaped. Follow
your hospital’s clinical guidelines to correct
the catheter’s position.
WARNING
Do not over-inflate the balloon because an
over-inflated balloon can rupture the
pulmonary artery.
WARNING
Alarm monitoring for invasive blood
pressures, if activated, is temporarily
deactivated during PWP measurements to
prevent nuisance alarms. The parameter field
does not display a crossed triangle symbol
because alarm monitoring is automatically
activated upon completion of a wedge
pressure measurement.