Stephan EVETR, Instructions For Use Manual, Page: 111 / 254

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5 Preparation for use

Fritz Stephan GmbH GA-070T-0518V2.7-HAO-EN 111
𝐶𝑜𝑛𝑠𝑢𝑚𝑝𝑡𝑖𝑜𝑛 = (𝑀𝑉 + 2
𝑙
𝑚𝑖𝑛
∗
𝑇𝑖𝑛𝑠𝑝 − 𝑇𝑅𝑎𝑚𝑝 + 𝑇𝑒𝑥𝑝
𝑇𝑖𝑛𝑠𝑝 + 𝑇𝑒𝑥𝑝
) ∗
(𝐹𝑖𝑂2 − 20.9%)
79.1%
𝐶𝑜𝑛𝑠𝑢𝑚𝑝𝑡𝑖𝑜𝑛 = (6
𝑙
𝑚𝑖𝑛
+ 2
𝑙
𝑚𝑖𝑛
∗
0 𝑠+3.1 𝑠
3.1 𝑠+1.9 𝑠
) ∗
(95%−20.9%)
79.1%
= 6.77
𝑙
𝑚𝑖𝑛
𝑂𝑝𝑒𝑟𝑎𝑡𝑖𝑛𝑔 𝑡𝑖𝑚𝑒 =
𝐶𝑦𝑙𝑖𝑛𝑑𝑒𝑟 𝑐𝑜𝑛𝑡𝑒𝑛𝑡
𝐶𝑜𝑛𝑠𝑢𝑚𝑝𝑡𝑖𝑜𝑛
=
2000 𝑙
6.77 𝑙/𝑚
= 295.4 𝑚𝑖𝑛
Tidal volume Vt = 10 ml
Respiratory rate f = 40 1/m
T
insp
= 0.4 s
T
Ramp
= 0.4 s
Basic flow at 40% oxygen = 3 l/min
The minute volume is calculated by multiplying the tidal volume with the
respiratory rate:
𝑀𝑉 = 𝑉𝑡 ∗ 𝑓 = 10𝑚𝑙 ∗ 40 1/𝑚𝑖𝑛 = 0,4
𝑙
𝑚
𝐶𝑜𝑛𝑠𝑢𝑚𝑝𝑡𝑖𝑜𝑛 = (𝑀𝑉 + 3
𝑙
𝑚𝑖𝑛
∗
𝑇𝑖𝑛𝑠𝑝 − 𝑇𝑅𝑎𝑚𝑝 + 𝑇𝑒𝑥𝑝
𝑇𝑖𝑛𝑠𝑝 + 𝑇𝑒𝑥𝑝
) ∗
(𝐹𝑖𝑂2 − 20.9%)
79.1%
𝐶𝑜𝑛𝑠𝑢𝑚𝑝𝑡𝑖𝑜𝑛 = (0.4
𝑙
𝑚𝑖𝑛
+ 3
𝑙
𝑚𝑖𝑛
∗
0 𝑠+1.1 𝑠
0.4 𝑠+1.1 𝑠
) ∗
(95%−20.9%)
79.1%
= 2.43
𝑙
𝑚𝑖𝑛
𝑂𝑝𝑒𝑟𝑎𝑡𝑖𝑛𝑔 𝑡𝑖𝑚𝑒 =
𝐶𝑦𝑙𝑖𝑛𝑑𝑒𝑟 𝑐𝑜𝑛𝑡𝑒𝑛𝑡
𝐶𝑜𝑛𝑠𝑢𝑚𝑝𝑡𝑖𝑜𝑛
=
2000 𝑙
2.43 𝑙/𝑚
= 823 𝑚𝑖𝑛
NOTE
At very high temperatures the basic flow may rise, but due to the blower
module the
EVE
TR
can provide ventilation without any added oxygen at
any time.
5.1.3 Changing the oxygen cylinder
NOTE
Before changing the pressurized gas cylinder, refer to the operating manual of the
pressure regulator.
Sample calculation:
Neo patient supplied
with 95% oxygen