LTV 1150 - Page 298

Page B-2 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
TERM DEFINITION
Control Mode
A mode of ventilation where the patient receives a fixed number of
machine breaths. In Control Mode, patient triggers are not allowed.
CPAP
Continuous Positive Airway Pressure. A positive pressure continually
applied throughout the breath cycle.
CPAP Mode
A mode of ventilation where the patient triggers all breaths. Available
breath types are Pressure Support and Spontaneous.
Display Window
A set of 12 dot-matrix displays used to show monitored data, alarm
messages and Extended Feature menu items.
EEPROM
Electrically Erasable Programmable Read Only Memory. A type of
memory that is used by the ventilator to maintain calibration data,
control setting and other data when power is not applied to the
ventilator.
EPAP
Expiratory Positive Airway Pressure. The positive gas pressure in the
patient circuit during breath exhalation.
Event
Any condition noted in the ventilator’s event trace. This may include
both error conditions and normal operational events.
Exhaled Tidal Volume
See Tidal Volume.
Expiratory Hold
A maneuver which holds the expiratory phase of a delivered breath for
a duration sufficient to determine the Auto PEEP of a patient.
Extended Features
A set of ventilator controls and options that are not associated with
Front Panel controls. Extended Features are accessed through a menu
shown in the display window.
F
See Breath Rate, monitored.
Flow
The rate at which gas is delivered to the patient, measured in Lpm.
Flow Trigger
A patient effort in which the amount of bias flow diverted into the
patient’s lungs exceeds the Sensitivity setting. A flow trigger will result
in delivery of an Assist or Patient breath, according to the ventilation
mode.
f/Vt
Total Breath Rate divided by the average Exhaled Tidal Volume.
f/Vt f
Total Breath Rate divided by the average Exhaled Tidal Volume, and
the Total Breath Rate.
I:E Ratio, monitored
The ratio of inspiratory time to exhalation time for a breath. The smaller
value is normalized to 1.
I:E Ratio, calculated
Calculated Inspiratory:Expiratory ratio, based upon the Inspiratory Time
setting and the Breath Rate setting.
in-oz
Inch ounces. A measurement of torque.
Inspiratory Hold
A maneuver which holds the inspiratory phase of a volume delivered
breath for a duration sufficient to determine
Δ Pres pressure and static
lung compliance of the patient.
IPAP
Inspiratory Positive Airway Pressure. The positive gas pressure in the
patient circuit during breath inhalation.
L
Liters. A unit of measure for volume.
Leak Compensation
Leak Compensation improves triggering when a circuit leak is present.