MIETHKE proGAV Instrucciones De Manejo página 29

proGAV
Caution: Due to postoperative swelling of
the skin the adjustment of the valve setting
may be diffi cult within the fi rst few days.
3b. Adjustment with the proGAV Adjustment Disc
Center the proGAV Adjustment Disc over the
adjustable DP-unit of the proGAV and align
the desired pressure setting (b) on top of the
proGAV Adjustment Disc in direction of the
ventricular catheter (c), see Fig. 15a.
Fig. 15a: Adjustment with the proGAV Adjustment Disc
For changing the opening pressure, press
down the proGAV Adjustment Disc and re-
lease (Fig. 15b). Do not press and turn.
Finally, remove the
Disc and confi rm the setting with the
proGAV Verifi cation Tool.
c
Fig. 15b: Positioning the proGAV Adjustment Disc
b
c
proGAV Adjustment
b
INSTRUCTIONS FOR USE |
4.Verifying the adjustment
After the adjustment, the valve opening pres-
sure is measured again, as described in step 2.
If the pressure measured now differs from the
intended pressure level, the adjustment proce-
dure has to be repeated from step 3.
During the adjustment the opening pressure of
the adjustable DP-unit should not be changed
more than 8 cmH O per adjustment procedure.
2
Example: Opening pressure is to be changed
from 3 to 18 cmH O. With only one adjustment
2
procedure the rotor would turn in a counter
clockwise direction (short way) and would stop
at the position 0 cmH
3
0
a)
Fig. 16: Rotor rotation during adjustment
a) false b) correct
The correct adjustment is in 2 steps: Adjustment
from 3 to 11, and from 11 to 18 cmH
tor turns now in a clockwise direction (fi g. 17b).
Caution: If the pressure confi guration of the
valve cannot be determined with complete
certainly by the proGAV Verifi cation Tool, the
use of imaging techniques is recommended
(excluding MRI: danger of artefacts).
MRI examinations must be performed at
fi eld strengths no greater than 3.0 tesla.
O (fi g. 16a).
2
3
18
)
b
O. The ro-
2
GB
11
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