Philips Trilogy Evo Universal - 14 Glossary

Instructions for Use | Glossary
Troubleshooting 98
14. Glossary
The following terms and acronyms appear throughout this manual.
Term
Definition
Active Circuit
Circuit that includes an active exhalation device
Airway Pressure
Pressure measured at the patient connection port.
Apnea
Temporary cessation of breathing.
Blower Hours
The total number of hours that the blower has been on over the life of the device. This
value helps determine when the ventilator needs to be serviced. You cannot reset this
value. It can only be reset by a service center.
BPM
Breaths per minute or beats per minute
BTPS
Body Temperature and Pressure Saturated; A standardization for lung volumes and flows
to barometric pressure at sea level, body temperature, and saturated with water vapor
reflecting the condition of air in the lung.
CPAP
Continuous Positive Airway Pressure
EPAP
Expiratory positive airway pressure
ESD
Electrostatic Discharge
etCO
2
End tidal carbon dioxide. The amount of carbon dioxide at the end of exhalation.
FiO
2
Fractionally Inspired Oxygen (the percentage of oxygen in the air inhaled)
I:E Ratio
The ratio of inspiratory time to expiratory time.
Infant
Full term newborn up to one month in age with mass that is greater than or equal to 2.5
kg.
IPAP
Inspiratory Positive Airway Pressure
l/min
Liters Per Minute
Mandatory Breath
Mandatory Breath is completely controlled by the ventilator.
Minute Ventilation
(MinVent)
The volume of gas that moves in and out of the lungs in one minute. It is calculated by
multiplying the tidal volume by the respiratory rate.
Patient Circuit
Consists of the tubing, filtration, exhaust valves (passive or active), and flow sensor
external to the ventilator.
Peak Flow
Maximum flow rate (in liters per minute) reached during a breath.
Peak Inspiratory
Pressure (PIP)
Highest pressure reached during inspiration.
PEEP
Positive End Expiratory Pressure is the pressure control setting in expiration.
Prescription
A given set of therapy mode control settings, alarm settings, and patient circuit type.
Pressure Control
Ventilation in which breaths are controlled by operator-defined pressure, inspiratory time,
and rise time.
PS
Pressure Support
Ramp
The ramp feature reduces pressure and then gradually increases the pressure to the
prescription setting.
Rise Time
The time it takes the ventilator to change from expiration to inspiration.
RR
Respiratory Rate (the number of breaths per minute).
Sigh
Delivers a periodic, larger volume breath. Settings adjust the frequency and volume.
SIMV
Synchronous intermittent mandatory ventilation
SpO
2
Saturation of peripheral oxygen
Spontaneous Breath
Breath type in which the breath is patient-triggered.
Spontaneous/Timed
(S/T) Mode
Therapy mode that is similar to S mode, except that it can also deliver a mandatory breath
if the patient does not spontaneously breathe within a set time.
Square
With a square wave pattern, airflow is generally constant throughout inspiration of the
breath.
Tidal Volume
The amount of air passing in and out of the lungs for each breath.