LTV 1150 - Page 272

Page 9-16 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
2) Perform a Breath Rate test.
A) Set the ventilator as follows:
Tidal Volume: 1500 ml
Breath Rate: 10
Insp Time: 3.0 seconds
B) Measure breath rate or the
period between the start of
two consecutive breaths.
• Measured breath rate must be 10.0 ± 1.0 or the
interval must be 6.0 ± 0.5 sec.
3) Perform a Pressure Control test.
A) Set the ventilator as follows:
Pressure Control: 45 cmH2O and
Control Mode: Pressure
Rise Time: under the VENT OP
menu as required (1 through 9,
depending on test lung used), to
achieve 50 cmH2O pressure
B) Measure the steady-state pressure
during inspiration (measured from 0
pressure baseline).
• Measured steady-state pressure must be
46 to 54 cmH
2
O.
4) Perform a Sensitivity test.
A) Set the ventilator as follows:
Sensitivity: 2 Lpm
PEEP: 5
Breath Rate: 6
Tidal Volume: 700
Inspiration Time: 2.0
Control Mode: Volume
B) Set Leak Compensation: OFF
Press and hold the Select button
• Status monitor window displays ALARM OP
Rotate Set Value knob
• Status monitor window displays VENT OP
Press Select button and rotate Set
Value knob
• Status monitor window displays LEAK
COMP
Press Select button and rotate Set
Value knob
• Status monitor window displays COMP OFF
Press Select button and press
Control Lock button (2) times.
C) Observe the Patient Effort LED on
the upper right hand side of the
ventilator control panel while
creating a 4 Lpm leak past the
patient wye momentarily during the
exhalation portion of the respiratory
cycle.
• The Patient Effort LED should momentarily
flash and an inspiration should immediately
begin.
• If the Patient Effort LED does not flash
and/or an inspiration is not given
immediately:
This condition constitutes a failure of the
sensitivity test.