LABORIE Goby - Chess; Figure 54: Chess Classification Scheme Window

LABORIE Goby Owner’s Manual GOBY-UM02 50
Mathematical formulas used in this feature are listed here:
5.6.3.4 CHESS
The CHESS classification
viii
is based on the work by Dr. K. Hofner. This feature will display a two-dimensional feature based
on the independent values of footpoint (pvoid min) and curvature from the passive urethral resistance relation (PURR). The
CHESS menu item is enabled only when there is a FLOW and PDET pressure.
1. Run a test with Flow, Volume, and Pressure channels.
2. Stop the test.
3. Click Info > X-Y Plot > ICS Nomogram (URA).
4. Select Info > X-Y Plot > CHESS. The CHESS Classification Scheme window will appear (Figure 54).
5. Click OK to exit.
Figure 54: CHESS Classification Scheme Window
Bladder Power:
• WF= (units: W/mm
2
)
Where:
• vdet =
quals
Variables and constants used in these equations are listed below:
• Q = maximum flow
• a = 25 cm H20
• Pdet = Detrusor pressure
• b = 6 mm/s or 0.6 cm/s
• Vol = bladder volume = infused volume-voided volume
• V = 10 ml
3
2
188790205.
4
2







+VtVol
Q