Respironics DreamStation Service & Technical Reference Manual page 42

1117539, V . 07
ER
I
CON
AHI
CSR
90%
IPAP 90%
EPAP 90%
A-Trial
T
EXT
Mask Fit Displays the value "100 - % Large Leak". % Large Leak is the
percentage of time that the mask leak was so high that it is no
longer possible for the device to identify respiratory events with
statistical accuracy. Displays the value for the most recent 1
day, as well as the values over last 7 days and 30 days.
AHI The device accumulates individual Apnea/Hypopnea indices
(AHI) for each session the patient used the device. This screen
displays the nightly AHI value for the most recent 1 day time
frame. It also displays the average of these individual nightly
AHI values over a 7 day and a 30 day time frame (provided the
device has at least 7 or 30 days of data respectively). If the
device has only 5 days of data to use for the calculation, the 5
day average value will be seen under the 7 day display.
Periodic During any given night, the device recognizes the percentage
Breathing of time the patient was experiencing periodic breathing. This
screen displays the nightly value of periodic breathing for the
most recent 1 day time frame. It also displays the average of
these individual nightly values of periodic breathing over a 7
day and a 30 day time frame (provided the device has at least 7
or 30 days of data respectively). If the device has only 5 days of
data to use for the calculation, the 5 day average value will be
seen under the 7 day display.
90% Pressure During any given night, the device recognizes the 90%
Pressure achieved by the Auto Algorithm. 90% Pressure is
defined as the pressure at which the device spent 90% of the
session time at or below. For example, if the device recognized
airflow for 10 hours, and 9 hours were spent at or below 11 cm
H2O, and 1 hour was spent above 11 cm H2O, then the 90%
Pressure would be 11 cm H2O. This screen displays the nightly
value of 90% Pressure for the most recent 1 day time frame. It
also displays the average of these individual nightly values of
90% Pressure over a 7 day and a 30 day time frame (provided
the device has at least 7 or 30 days of data respectively). If the
device has only 5 days of data to use for the calculation, the 5
day average value will be seen under the 7 day display. This
screen only displays if the device is in Auto- CPAP or Auto-Trial
therapy mode.
IPAP: Displays the value of 90% inhalation pressure for the most
90% Pressure recent 1 day, as well as the average values over the last 7 days
and 30 days. Available on the Auto BiPAP model.
EPAP: Displays the value of 90% exhalation pressure for the most
90% Pressure recent 1 day, as well as the average values over the last 7 days
and 30 days. Available on the Auto BiPAP model.
A-Trial If Auto-Trial mode is available and enabled, this screen
displays Days: xx/xx (where xx/xx is the number of completed
trial days / number of selected trial days).
D
ESCRIPTION
P 4-27
AGE