Preoperative Valve Test; Pressure-Flow Characteristics - MIETHKE proGAV Instrucciones De Manejo

| INSTRUCTIONS FOR USE
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PREOPERATIVE VALVE TEST

Isotonic sterile sodium chloride solution
Fig. 19: Patency test
The proGAV can be filled by aspiration through
a sterile, single-use syringe attached to the di-
stal end of the catheter. The proximal end of
the valve is immersed in a sterile, physiological
saline solution. The valve is patent if fluid can be
extracted in this way (see Fig. 19).
Caution: Pressure admission through the
single-use syringe should be avoided, both
at the proximal and the distal end.
Contaminations in the solution used for the
test can impair the product's performance.

PRESSURE-FLOW CHARACTERISTICS

Horizontal position
The following diagrams show the pressure-flow
characteristics of the adjustable DP-unit of the
proGAV for the pressure settings 0, 10 and 20
cmH O.
2
30
25
Adjustable DP-unit 20 cmH
20
15
Adjustable DP-unit 10 cmH
10
5
Adjustable DP-unit 0 cmH
0 5 10 15 20
flow (ml/h)
Fig. 20: Pressure-flow characteristics for some
pressure settings of the adjustable DP-unit
32
O
2
O
2
O
2
25 30 35 40 45 50 55
Vertical position
The opening pressure of the proGAV in
the vertical position is the sum of the ope-
ning pressure of the adjustable DP-unit and
the gravitational unit.
The following diagrams show the pressure-
flow-characteristics for some pressure settings
in the vertical body position.
60
55
50
Gravitational unit 10 cmH
45
40
35
Adjustable DP-unit 20 cmH
30
25
Adjustable DP-unit 10 cmH
20
15
Adjustable DP-unit 0 cmH
10
5
5 10 15 20 25
0
flow (ml/h)
60
55
50
Gravitational unit 15 cmH
45
40
Adjustable DP-unit 20 cmH
35
30
Adjustable DP-unit 10 cmH
25
20
Adjustable DP-unit 0 cmH
15
10
5
0 5 10 15 20 25
flow (ml/h)
60
55
50
45
Adjustable DP-unit 20 cmH
40
35
Adjustable DP-unit 10 cmH
30
25
Adjustable DP-unit 0 cmH
20
15
10
Gravitational unit 20 cmH
5
0 5 10 15 20 25
flow (ml/h)
proGAV
O
2
O
2
O
2
O
2
30 35 40 45 50 55
O
2
O
2
O
2
O
2
30 35 40 45 50 55
O
2
O
2
O
2
O
2
30 35 40 45 50 55