Selecting The Appropriate Shunt - MIETHKE proGAV Instrucciones De Manejo

| INSTRUCTIONS FOR USE
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SELECTING THE APPROPRIATE SHUNT

The proGAV is a position-dependent shunt,
meaning the opening pressure changes depen-
ding on the position of the patient.
To choose the suitable proGAV for an individual
patient, one opening pressure is set for the hori-
zontal position (patient lying down), and one for
the vertical position (patient standing upright).
Horizontal position
The opening pressure for the horizontal position
is defined by the adjustable DP-unit. The pres-
sure level should be choosen according to the
clinical situation and indication. The unit can be
adjusted to a pressure setting between 0 cmH
and 20 cmH O.
2
Vertical position
The opening pressure of the proGAV for the
vertical position is calculated by the sum of the
opening pressure of the adjustment and of the
gravitational unit. The selection of the gravitati-
onal unit depends on the activity and the abdo-
minal pressure (adiposity).
The following opening pressure ranges for the
gravitational unit are possible, the pressure ran-
ge selected can be checked postoperatively on
X-ray image:
Opening pressure
for vertical posture
10 cmH O
2
15 cmH O
2
20 cmH O
2
25 cmH O
2
30 cmH O
2
35 cmH O
2
24
2
Coding of
gravitational unit
small, no ring
large, no ring
large, 1 ring
large, 2 rings
large, 3 rings
large, 4 rings
coding ring
a)
Fig. 7: X-ray image of the gravitational unit
O
a) large, 1 ring = 20 cmH
b) small = 10 cmH
b)
O,
2
O
2
proGAV