Philips MP20/30 Manuale Utente

Editing the Wedge

not be displayed or recorded properly. To avoid this, switch out of optimum scale before 
performing a wedge procedure.

Use the 

 and 

 popup keys to select any ECG or respiratory wave as 

reference waves.

Select 

 if you want to synchronize all displayed waves to your preferred speed.

Inflate the balloon when the monitor prompts you: 

. The 

waveform changes from the PAP to the PAWP wave. The measurement takes approximately 12 
seconds. On completion, the monitor stores the PAWP waveform display and prompts you to 
deflate the balloon. If the monitor cannot detect a wedging waveform you must use 

 to store the wedge and two reference waves manually.

Deflate the balloon when the monitor prompts you: 

 and 

verify that the waveform returns to pulmonary artery shape.

If you need to start a new measurement, select 

.

Select the 

 pop-up key to see the stored waveforms.

The monitor displays a cursor in the waveform at the PAWP mean value. It also displays any 
previously stored value and the time it was stored.

Move the cursors up, down, right and left to set them on the correct wedge position. 

Select 

 to store the PAWP value.

Select 

 to print the PAWP waveform and any reference waves or 

 to 

record them. While recording or printing, you cannot perform any more Wedge tasks.

Prolonged inflation can cause pulmonary hemorrhage, infarction or both. Inflate the balloon for the 
minimum time necessary to get an accurate measurement. 

If the pulmonary artery flotation catheter drifts into the wedge position without inflation of the balloon, the 
pulmonary artery pressure waveform assumes a wedged appearance. Take appropriate action, in accordance 
with standard procedures, to correct the situation.

If the PAWP (mean) is greater than the PAP (systolic), deflate the balloon and report the incident in 
accordance with hospital policy, because the pulmonary artery could be accidently ruptured, and the wedge 
value derived will not reflect the patient’s hemodynamic state, but will merely reflect the pressure in the 
catheter or balloon.