Monitoring Menu - ResMed C28173 Manual

248476r4.book Seite 30 Freitag, 28. Oktober 2011 3:10 15

Monitoring menu

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Therapy status bar - parameter descriptions
Parameter
Leak (Lk)
Respiratory Rate
(RR)
Inspiration Time
(Ti)
Tidal Volume (Vt)
Minute Ventilation
(MV)
Note: Preferences for pressure and flow units can be set in the in the Setup menu, Options,
Configuration menu.
30
Screen 1: Treatment
1 Pressure bar graph with the set pressure limits and measured pressure.
2 Machine breath indicators:
Machine cycled breath:
Ti Min:
•
Ti Max:
•
EPAP/PEEP at Ti Max.
5 4 3
Machine triggered breath:
•
pressure up from EPAP/PEEP .
3 Set Ramp (see "Setting Ramp" on page 25).
4 Warm-up the humidifier (see step 6 on page 23).
5 Set program (see "Programs" on page 26).
6 The Therapy status bar allows you to view treatment data while therapy is
running.
Range Description
(Resolution)
0–120 L/min Current average unintentional leak. Leak is an output of
the Vsync algorithm (see "Learn Circuit" on page 7).
(1 L/min)
Unintentional leak is calculated by subtracting expected
interface vent flow (based on the Mask Type in the
Settings menu) from total leak. Averaging is typically
over 2-6 breaths and can be shorter in the presence of
unstable leak.
5–60 bpm The number of breaths per minute, averaged over the
(1 bpm) last five breaths. A breath is considered as a respiratory
cycle if it exceeds 50 mL, either spontaneously or
machine triggered.
Note: The reported Respiratory Rate may be less that
the set Backup Rate. Breaths smaller than 50 mL may
not be recorded.
0.1–4 sec The duration of the ventilator inspiratory phase. This is
a set Ti value in Timed and PAC modes.
(0.1 sec)
50–3000 mL Tidal Volume is an estimate of quantity of inhaled air
(10 mL) per breath, calculated as an integral of respiratory flow:
based on the leak flow, the mask vent flow and the
total flow rate. The display is based on a five-breath
moving average, updated every breath.
0.6–60 L/min Minute Ventilation is the product of Respiratory Rate
(0.1 L/min) and Tidal Volume. The display is based on a five-breath
moving average, updated every breath.
the inspiratory phase is sustained up to Ti Min.
the inspiratory phase is cycled down to
the machine initiates the inspiratory phase increasing