Fluke Biomedical VT Mobile - Manual (Page 47)

Checking Ventilator Parameters
Understanding the Parameters
4
4-3
Understanding the Parameters
Table 4-1 presents a list of parameters calculated by the Analyzer. A breath detection
algorithm determines the various phases of a ventilator breath; the Analyzer then
calculates the first 12 parameters. The Analyzer provides the final four parameters as
direct measurements.
Figure 4-2 shows how to access the 12 calculated parameters, and Figure 4-3 shows how
to access the four direct measurement parameters.
Table 4-1. Ventilator Parameters
Keys Item Name Description
VT Tidal Volume Total volume accumulated over the Inspiratory
Time.
MV Minute Volume The Expiratory Tidal Volume times the respiratory
rate in breaths per minute.
PIF Peak Inspiratory Flow The maximum of the absolute value of the Flow
Rate measured during the Inspiratory Time.
K
G
PEF Peak Expiratory Flow The maximum of the absolute value of the Flow
Rate measured during the Expiratory Time.
PIP Peak Inspiratory Pressure The maximum pressure during the Inspiratory Time.
PEEP Positive End-Expiratory
Pressure
The average pressure during the End Expiratory
State.
MAP Mean Airway Pressure The mean pressure over the entire breath.
L
G
IPP Inspiratory Pause Pressure The average pressure during the End Inspiratory
State.
Rate Breath Rate Number of breaths per minute.
Ti Inspiratory Time The time of the inspiratory period including the
inspiratory hold time.
Te Expiratory Time The time of the expiratory period including the
expiratory hold time.
M
G
I:E Inspiratory to Expiratory
Time Ratio The ratio of the Inspiratory Time to the Expiratory
Time.
P O2 Oxygen Percentage The percentage of oxygen to total gas.
Æ
P Temp Temperature The temperature of the gas passing through the
Temperature and Relative Humidity Sensor.
Æ
P RH Relative Humidity (gas
under test) The relative humidity of the gas passing through the
Temperature and Relative Humidity Sensor.
S E Baro Barometric Pressure The absolute barometric pressure as measured
internally.