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9.2.4 Selecting plot type
The P/V Tool lets you display your maneuver data in various
forms for flexibility in patient assessment. You can change the
plot type before, or after the maneuver; and you can change
the representation of stored curves while using the
History
feature.
Touch the P/V Tool graphics area to open the
P/V Tool plot
pop-up window (Figure 9-8). Select a plot type:
• Paw/V (airway pressure/volume)
• P/V Tool Pro: Paw/V+Paw/dv (airway pressure/volume+air-
way pressure/volume difference (expiration - insufflation).
Can be used to find the point of derecruitment.
• Paw/Flow. This curve can be used to check the quality of
the maneuver. If flow at any point is outside the range
±10 l/min, consider reducing the
Ramp speed
.
• Paux/V
• Paw-Paux/V. If you use esophageal pressure as the Paux
input, a transpulmonary pressure curve is displayed. This
curve shows the compliance of the lungs alone,
eliminating the chest wall compliance.
P/V tool: Cursors can be used on Paw/V, Paux/V curve.
P/V Tool Pro: Cursors can be used in all curves (Paw/flow,
Paw/V+Paw/dv).
Figure 9-8. P/V Tool plot window
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