Pulmonetic Systems LTV 950 - Low Pressure O

Operator’s Manual LTV
®
Series ventilator Page 6-13
p/n 10664, Rev. Y
Low Pressure O
2
Source (LTV
®
1000 Only)
When selected, this option allows oxygen to be supplied from a low pressure / low flow oxygen
source such as an oxygen concentrator or line mounted flow meter. Oxygen from the low pressure
source is mixed with air inside the ventilator. The O
2
percent delivered to the patient is determined by
the O
2
inlet flow and the total minute volume and is not regulated by the ventilator. Use the Input O
2
Flow chart (page 6-15) to determine the correct O
2
flow for the desired FIO
2
.
• When the Low Pressure O
2
Source option is selected and a high O
2
pressure source is attached
to the ventilator, an Automatic High O
2
Switch Over safety response
19
generates a HIGH O2
PRES alarm, switches the ventilator to High Pressure O
2
Source mode and sets the percentage
of oxygen to be delivered in the gas flow to 21%.
When the Low Pressure O
2
Source option is not selected, a high pressure oxygen source is
expected, and oxygen blending is done within the ventilator. The ventilator expects an oxygen source
with a pressure of 40 - 80 PSIG. The O
2
percent delivered to the patient is determined by the O
2
%
(O
2
Flush) setting on the ventilator front panel.
To toggle the state of the Low Pressure O
2
Source:
1) Push the Low Pressure O
2
Source button.
• While the Low Pressure O
2
Source is selected, the associated LED will be on.
While Low Pressure O
2
Source is on:
• The O
2
Inlet Pressure Low alarm is inactive.
• The O
2
Pressure High alarm is set to activate at > 10 PSIG.
• The O
2
% (O
2
Flush) display will display dimmed dashes and O
2
% cannot be set.
• Oxygen inlet flow must be set to obtain the desired oxygen percentage.
WARNING
Inspired Oxygen (FIO
2
) Concentration – If the patient has a variable respiratory rate, his/her minute
ventilation will fluctuate. If exact concentrations of inspired oxygen (FIO
2
) are required to be delivered
to the patient, it is recommended that an accurate oxygen analyzer with alarms be used.
AVERTISSEMENT
Concentration d’oxygène inspiré (FIO
2
) – Si la fréquence respiratoire du patient est variable, sa
ventilation-minute va fluctuer. Lorsqu’une concentration exacte d’oxygène inspiré (FIO
2
) est
nécessaire pour une transmission au patient, il est recommandé d’utiliser un analyseur de niveau
d’oxygène
2
précis, comportant des alarmes.
19
The Automatic High O
2
Switch Over safety response is only available on LTV
®
1000 ventilators.