Air Liquide Taema OPTI-NO, Руководство пользователя

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Version 3.0 12/2001.
code YL013700 9
Taema
OPTI-NO
GB
3. Equations for calculating the reduction pressure to be used for NO/N
2
mixture
bottles of concentrations other than 225 and 450 ppm.
• High range flow:
P = ------------------------------------------------------------------------------- ------------------
• Low range flow:
P = ------------------------------------------------------------------------------- ------------------
122.82 x
{
(I% / 100) x (1.04 x [NO]
bottle
- 1.11 x [NO]
desired
)
}
[NO]
desired
x V x 1000
96.687
122.82
23.82 x
{
(I% / 100) x (1.04 x [NO]
bottle
- 1.11 x [NO]
desired
)
}
[NO]
desired
x V x 1000
15.91
23.82
Where, for both equations:
P: is the pressure to be set on the pressure
regulator (in bar)
V: is the minute volume set on the ventilator
(in l/min.)
I%: is the insufflation time set on the ventilator
(in % of I+E)
III. TECHNICAL DATA
Example with figures:
[NO]
desired
= 2 ppm / [NO]
bottle
= 100 ppm / V = 6 l/min / %I = 33 %.
For the high flow range, P = 2.1 bar, to be set on the pressure regulator.
For the low flow range, P = 14.33 bar, to be set on the pressure regulator.
As the pressure regulator only allows a maximum pressure of 8 bar to be set, the high flow range will be
used
Notes:
• A pressure of less than 1 bar set on the pressure regulator does not allow sufficient accuracy.
• The above equations have been calculated for an ambient temperature of 20 °C.
• Do not use NO/N
2
mixture bottles of more than 1000 ppm.
Important:
• The
OPTI-NO must only be adjusted and used on prescription and under medical control.
• The OPTI-NO is a device for supplying injection of a NO/N
2
mixture flow determined by the user.
It is not fitted out with the monitoring of the inhaled gases by the patient (O
2
, NO and NO
x
concentration, ...). The physician has to judge the timeliness to use it in conjunction with an
additional monitoring system.
[NO]
desired
: is the desired concentration of injected
NO (in ppm)
[NO]
bottle
: is the NO level of the NO/N
2
mixture bottle (in ppm)