ResMed C28173 User manual

ResMed Confidential Proprietary Information, not to be reproduced or made available to third parties
without prior consent from ResMed and not to be used in any unauthorised way.
ResMed Ltd 2011. DOC NO 248476
PAGE 1 of 80
SPECIFICATION – PRINTED MATERIALS REV 4
Rev Change
Note Date document
drafted
Document prepared by
(Name)
Document Checked by
(Name)
1 C28173 13 May 11 Alexander Modispacher Alison Besley or delegate (refer to change note)
2 C28554 25 May 11 Alexander Modispacher Alison Besley or delegate (refer to change note)
3 C29268 31 Aug 11 Alexander Modispacher Alison Besley or delegate (refer to change note)
4 C29718 28 Oct 11 Alexander Modispacher Alison Besley or delegate (refer to change note)
Stellar 150 Clinical Guide ROW Eng
Printing of this document is not mandatory. The printing
specifications below are provided for the purposes of local
(regional) printing only. Printed copies cannot be ordered
from Sydney.
1. PRINT DETAILS
Dimensions: Cover & text :
280H x 210W ± 2mm finished.
Style: Cover: 2 sided
Colour: 4 colour (Varnished for colour)
Stock: 260gsm Artboard Coated
Text: 2 sided
Colour: 4 colour
Stock: 100 gsm A2 satin
Additional blank pages may be added to the back of the document if the
current text page count is not a multiple of 4 (a manufacturing requirement).
Binding: Saddle stitch for 88pp and under, Burst bind for 89pp and over.
Exceptions can be made for small runs printed via digital processing.
Art work: As shown on following pages.
If re-typeset, the same styles and sizes must be maintained.
Where the colours indicated differ between Style (as stated above) and
Art work, then the specifications provided for Style should be followed.
Manufacturer: Outside printer.
(Small quantities may be printed inhouse)
2. RESMED QC INSPECTION

ResMed Confidential Proprietary Information, not to be reproduced or made available to third parties
without prior consent from ResMed and not to be used in any unauthorised way.
ResMed Ltd 2011. DOC NO 248476
PAGE 2 of 80
SPECIFICATION – PRINTED MATERIALS REV 4
Refer to AWI203-002 - Printed Materials/Labels/CDs/Videos Section 19
3. FOR ALL OTHER REQUIREMENTS, REFER TO RESMED SUPPLIER MANUAL AQP119.
4. WEB VERSIONS
This document appears as the following files for web publishing purposes:
248476r4_stellar-150_clinical-guide_row_eng.pdf

248476/4 2011-10
Stellar 150
CLINICAL
ROW ENG
Manufacturer: ResMed Germany Inc. Fraunhoferstr. 16 82152 Martinsried Germany
Distributed by: ResMed Ltd 1 Elizabeth Macarthur Drive Bella Vista NSW 2153 Australia.
ResMed Corp 9001 Spectrum Center Blvd. San Diego, CA 92123 USA.
ResMed (UK) Ltd 96 Milton Park Abingdon Oxfordshire OX14 4RY UK.
See www.resmed.com for other ResMed locations worldwide.
Stellar 100: Protected by patents: AU 697652, AU 699726, AU 713679, AU 731800, AU 756622, AU 2002306200, AU 2005200987, CA 2235939,
CA 2263126, EP 0661071, EP 0858352, EP 0929336, JP 3635097, JP 3638613, JP 4083154, US 6152129, US 6213119, US 6240921, US 6279569, US
6659101, US 6945248, US 7661428. Other patents pending. Protected by design registrations: CN 201030566594.5, EU 1768045
Stellar 150: Protected by patents: AU 2002306200, AU 2002325399, AU 2003204620, AU 2004205275, AU 2004216918, AU 2005200987, AU
2006201573, AU 2009203204, AU 697652, AU 699726, AU 713679, AU 731800, AU 737302, AU 739753, AU 746101, AU7 56622, AU 757163, AU
759703, AU 773651, AU 779072, CA 2235939, CA 2263126, CA 2266454, CA 2298547, CA 2298553, CN 20020814714.6, CN 200480006230.3,
EP 0661071, EP 0858352, EP 0929336, EP 0996358, EP 1005829, EP 1005830, EP 1132106, EP 1175239, EP 1277435, EP 1687052, JP 3558167,
JP 3635097, JP 3638613, JP 3645470, JP 3683182, JP 3730089, JP 3902781, JP 4083154, JP 4597959, JP 4643724, JP 4158958, JP 4162118,
NZ 541914, NZ 546457, NZ 563389, NZ 567617, NZ 577484, US 6152129, US 6213119, US 6240921, US 6279569, US 6484719, US 6532957, US
6553992, US 6575163, US 6644312, US 6659101, US 6688307, US 6755193, US 6810876, US 6840240, US 6845773, US 6945248, US 7089937, US
7137389, US 7255103, US 7367337, US 7520279, US 7628151, US 7644713, US 7661428. Other patents pending. Protected by design registrations:
CN 201030566594.5, EU 1768045
ResMed, SlimLine, SmartStart, Stellar and TiCONTROL are trademarks of ResMed Ltd. ResMed, SlimLine, SmartStart and Stellar are registered in
U.S. Patent and Trademark Office. © 2011 ResMed Ltd
Stellar™ 150
InvasIve and nonInvasIve
ventIlator
Clinical Guide
English
Making quality of care easy
Respiratory Care Solutions
Global leaders in sleep and respiratory medicine www.resmed.com

MONITORING
Monitoring
Pressure / Flow
Min Vent/Resp Rate
or MV/Va (iVAPS
Mode)
Leak
Tidal Volume
Treatment
Synchronisation
Oximetry
SETUP
Alarm Settings
Options
Clinical Settings
INFO
Leak
Minute Ventilation
Tidal Volume
Event Summary
SpO2
Used Hours
Respiratory Rate
Device Information
Reminder
I:E Ratio
Pressure Support
AHI
1
2
3
4
510
6
Making quality of care easy
Respiratory Care Solutions
Making quality of care easy
Respiratory Care Solutions
For full Setup menu details, see:
• Clinical Settings on page 34
• Alarm Settings on page 37
• Options on page 42
Setting up for non-invasive use
1
2
345
AC locking clip
AC power cord
Setting up for invasive use
Learn Circuit
configuration
Antibacterial filter
HMEF
Catheter mount
ResMed Leak Port
Air tubing
External humidifier
AC locking clip
AC power cord
Using the menus
Accessing Clinical Mode
For full setup, see page 15.
For full setup, see page 13.

i
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Indications for use 1
Contraindications 1
Adverse effects 1
About Stellar 150 therapy modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Common setting parameters 2
More about iVAPS 4
Ensuring successful ventilation with Stellar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Learn Circuit 7
Vsync and mask selection 7
TiControl 9
Trigger/Cycle sensitivities 9
Rise/Fall Time 10
Pathology Defaults 10
Stellar 150 at a glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Patient interface 12
Humidification 12
Internal battery 12
ResMed USB stick 12
Use on an aircraft 12
Mobile use 13
Setting up for noninvasive use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Attaching the H4i heated humidifier 14
Setting up for invasive use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Setting up for home therapy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Working with other optional accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Attaching a pulse oximeter 17
Adding supplemental oxygen 18
Starting therapy using oxygen 18
Stopping therapy using oxygen 18
Using the FiO2 monitoring sensor 19
Attaching an antibacterial filter 20
Stellar 150 basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
About the control panel 21
Starting therapy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Performing a functional test 22
Starting therapy 23
Stopping therapy 23
Turning off the power 24
Working with alarms 24
Tailoring treatment setup options 25
Programs 26
Using mask-fit 26
Using the menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Monitoring menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Setup menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Accessing Clinical mode 33
Setup menu: Clinical Settings 33
Setup menu: Alarm Settings 37
Testing the alarms 39
Setup menu: Options 42
Setup menu: Configuration Menu 43
248476r4.book Seite i Freitag, 28. Oktober 2011 3:10 15

ii
Info menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Event Summary 45
General therapy information 45
Apnoea/Apnoea Hypopnoea Index 46
Used Hours 46
Device information 46
Reminders 47
Configuring iVAPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Using Learn Targets 47
Manually setting iVAPS 49
Assessing the clinical outcome 50
Data management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Daily 52
Weekly 52
Monthly 52
Replacing the air filter 53
Multipatient use 54
Servicing 54
Clinical titration guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Mouth leaks 55
Setting TiControl 55
EPAP/PEEP 56
Trigger/cycle sensitivities 56
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Alarm troubleshooting 57
Other troubleshooting 60
Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Guidance and manufacturer’s declaration – electromagnetic emissions and immunity 67
Symbols 68
General warnings and cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Limited warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
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1
Introduction
Introduction
Read the entire manual before using the device.
Indications for use
The Stellar 150 is intended to provide ventilation for non-dependent, spontaneously breathing
adult and paediatric patients (13 kg and above) with respiratory insufficiency, or respiratory
failure, with or without obstructive sleep apnoea. The device is for noninvasive use, or invasive
use with an uncuffed or deflated tracheostomy.
Users of the device include patients and their caregivers, physicians, nurses, respiratory
therapists and other clinical staff. Operation of the device includes both stationary, such as in
hospital or home, or mobile, such as wheelchair usage.
Contraindications
The Stellar 150 is contraindicated in patients who are unable to endure more than brief
interruptions in ventilation. The Stellar 150 is not a life support ventilator.
The use of the device may be contraindicated in patients with:
•pneumothorax or pneumomediastinum
•pathologically low blood pressure, particularly if associated with intravascular volume
depletion
•cerebrospinal fluid leak, recent cranial surgery or trauma
•severe bullous lung disease
•dehydration.
The use of the Stellar 150 or pulse oximetry (including XPOD) is contraindicated in an MRI
environment.
Adverse effects
Patients should report unusual chest pain, severe headache or increased breathlessness.
The following side effects may arise during the course of noninvasive ventilation with the
device:
•drying of the nose, mouth or throat
•nosebleed
•bloating
•ear or sinus discomfort
•eye irritation
•skin rashes.
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2
About Stellar 150 therapy modes
Stellar provides a number of therapy modes to suit a variety of ventilation requirements.
Regardless of the mode, Stellar 150 assists spontaneous breathing by providing two pressures
in response to the patient flow or a preset fixed time.
Common setting parameters
The inspiratory positive airway pressure (IPAP, or the sum of PEEP and Pressure Support/PS)
assists inspiration. The lower expiratory positive airway pressure (EPAP or PEEP) eliminates
exhaled air through the exhaust vent. This pressure also provides a stent to maintain an open
upper airway, improves small airway recruitment and therefore oxygenation and may improve
triggering in some patients with intrinsic PEEP.
The difference of the two pressures—Pressure Support/PS—contributes to improved patient
ventilation.
Stellar provides the following modes:
•CPAP mode—a fixed pressure is delivered.
•S (Spontaneous) mode—the device senses the patient breath and triggers IPAP in
response to an increase in flow, and cycles into EPAP at the end of inspiration. The breath
rate and the respiratory pattern will be determined by the patient.
•ST (Spontaneous/Timed) or PS (Pressure Support) mode—the device augments any
breath initiated by the patient, but will also supply additional breaths should the patient
breath rate fall below the clinician's set ’backup’ breath rate.
•T (Timed) mode—the fixed breath rate and the fixed inspiration time set by the clinician are
supplied regardless of patient effort.
•PAC (Pressure Assist Control)—the inspiration time is preset in the PAC mode. There is no
spontaneous/flow cycling. The inspiration can be triggered by the patient when respiratory
rate is above a preset value, or time triggered breaths will be delivered at the backup breath
rate.
•iVAPS (intelligent Volume Assured Pressure Support)—designed to maintain a preset
target alveolar ventilation by monitoring delivered ventilation, adjusting the pressure support
and providing an intelligent backup breath automatically. The iVAPS therapy mode is
indicated for patients 30 kg and above.
Pressure
Support
Pressure
Ti Max
Ti Min
IPAP
0
EPAP /
PEEP Rise time
One Breath Cycle
Fall time
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3
About Stellar 150 therapy modes
These therapy modes (excluding CPAP mode—where a single level of continuous pressure is
delivered) are shown below.
IPAP
Inspiration
Patient
Effort
Leak flow
S
S/T
T
Expiration
EPAP
IPAP
EPAP
IPAP
EPAP
iVAPS
PEEP
PAC
IPAP
EPAP
PS
Ti
Ti
Ti Min
Ti Min
One breath cycle
One breath cycle
One breath cycle
One breath cycle
Ti Max
Ti Min Ti Max
Ti Max
Long breath
(Leak or obstructive lungs)
Very short breath
(Restrictive lungs) No breath effort
Machine initiates inspiratory phase increasing pressure up from EPAP/PEEP
Ti Max: inspiratory phase cycled down to EPAP/PEEP at Ti Max
Ti Min: inspiratory phase sustained up to Ti Min
Ti
One breath cycle
Period of increased leak
Ti Max
Ti Min
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4
More about iVAPS
The iVAPS therapy mode is indicated for patients 30 kg and above.
You may prefer some assurance that the patient's ventilatory needs will be maintained if their
condition varies. A variety of ‘dual mode’ schemes exist, that aim to combine the benefits of
pressure target and volume target, most of which can be categorised generically as volume-
assured pressure support, or VAPS modes.
With VAPS devices in general, the ventilatory assistance (pressure support) aims to
automatically adjust to changes in patient condition over time, typically to maintain a target tidal
volume.
iVAPS offers the comfort and synchrony of pressure support, but with the assurance offered by
a volume target. iVAPS has the following advantages over traditional VAPS schemes:
•iVAPS is a unique combination for a servo-controlled ventilator, in that iVAPS has the goal of
regulating alveolar ventilation to a prescribed target, and iVAPS has a rapid but gentle servo-
control response. iVAPS is tuned to be fast enough to avoid blood-gas derangement
associated with most breathing challenges, including during sleep, but is gentle enough to
avoid disruption.
•iVAPS has an intelligent Backup Rate (iBR) which aims to keep ‘out of the way’ while the
patient is breathing, yet during sustained apnoea will mimic the patient's own breath rate.
This contributes to iVAPS’ ability to maintain its ventilation target and so stabilise blood
gases even during sleep.
•iVAPS has ResMed’s robust leak compensation feature (Vsync), a product of ResMed’s long
experience in noninvasive ventilation. This promotes synchrony and comfort even during
significant leak.
Pressure support is adjusted from breath to breath, aiming to maintain target alveolar
ventilation. If ventilation falls, pressure support is increased until the target is reached.
Conversely, if alveolar ventilation rises above target, pressure support falls. The range of
pressure support adjustment is constrained within configurable limits.
The changing pressure support can vary from 0.7 cm H2O/sec to at 0.5 cm H2O/sec depending
on how close the patient is to the target alveolar ventilation. The change in pressure support
typically does not exceed 3 cm H2O per breath.
iVAPS provides benefits across a range of situations. For example, it can benefit patients with
a progressive lung condition, because the ventilation target can be maintained despite
degradation of lung mechanics or muscle function. Similarly, iVAPS offers advantage in
nocturnal hypoventilation. iVAPS, by providing pressure support when required, is more
comfortable and better tolerated.
Some key concepts important to clinical understanding of iVAPS operation are discussed below,
ahead of guidance on the iVAPS setup procedure on Stellar 150. See “Configuring iVAPS” on
page 47.
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5
About Stellar 150 therapy modes
Target alveolar ventilation
iVAPS targets alveolar ventilation. Alveolar ventilation was chosen because it is at the level of
the alveoli that gas exchange occurs. Total ventilation includes the ventilation devoted to the
conducting airways, whereas alveolar ventilation best represents the useful portion of
ventilation that reaches the alveoli.
Alveolar ventilation cannot be measured directly, so iVAPS estimates it using a height
approximated value of anatomical deadspace as shown in the graph below. Anatomic
deadspace is the amount of breath that remains in the conducting airways, which does not
reach alveoli and does not contribute to gas exchange. Its contribution is proportional to breath
rate. By using alveolar ventilation as a servo-ventilation target, as opposed to tidal volume or
total ventilation, the effect of respiratory rate change on effective ventilation is negated.
Adapted from Hart MC et al. Journal Applied Physiology.18(3), p519-522. 1963
Target Patient Rate
iVAPS has a novel approach to providing a backup rate. Instead of mandating a fixed backup rate,
iVAPS’ intelligent Backup Rate (iBR) will shift automatically between two limits, according to
the context. The benefit of this approach is improved synchrony, while maximising iVAPS’ ability
to maintain the target ventilation, at minimal pressure support.
•During sustained apnoea, the iBR will adopt a pre-configured Target Patient Rate. This
Target Patient Rate defines the upper boundary for iBR. You set the Target Patient Rate to
match the patient’s average spontaneous rate (unlike a traditional backup rate).
•During spontaneous ventilation, the iBR adjusts to remain well in the background, at 2/3rd of
the Target Patient Rate. This ‘background’ backup rate gives the patient maximum
opportunity to spontaneously trigger.
•When spontaneous triggering ceases (eg, at the onset of an apnoea/hypopnoea), the iBR
adjusts from its background frequency to its Target Patient Rate. It will adjust quickest
typically (within 4-5 breaths) when ventilation is below the target ventilation.
•A single spontaneous triggered breath resets the iBR to its background rate (2/3rds of Target
Patient Rate).
Anatomical Deadspace Estimation
iVAPS Deadspace
Estimation
Height (cm)
Anatomical Deadspace Estimate (ml)
90 100 110 120 130 140 150 160 170 180 190 200
25
50
75
100
125
150
175
200
225
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6
Min/Max PS
The default settings for maximum and minimum pressure support are normally adequate, but
you may wish to alter them in some patients.
Min PS and Max PS define the range of pressure support adjustment available to the iVAPS
algorithm as it regulates alveolar ventilation.
It is recommended that Max PS be set high enough to allow the alveolar ventilation target to be
met, while exercising clinical judgement over considerations such as patient comfort and
tolerance, lung mechanics, age, mask seal, etc.
It is recommended that Min PS is left at the level set when learning the patient’s ventilation
target (default 4 cm H2O) unless the patient finds this too little for comfort.
Time
Breaths perminute
Target patient rate
15
10
iVAPSintelligent back-up rate (iBR)Patient spontaneous rate
Patient effort No Patient effort Patient effort
iBR brings the patient back on target when back-up breaths are required
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7
Ensuring successful ventilation with Stellar
Ensuring successful ventilation with Stellar
Successful ventilation, whether using a mask or tracheostomy tube, relies on improving gas
exchange and reducing the work of breathing for the patient. Maintaining patient-device
synchrony and managing leak is critical to achieving this.
A good device should help this by:
•monitoring and compensating for leak
•accurately sensing the start and end of a patient’s inspiratory effort for triggering and cycling
•responding quickly to reach and maintain the set pressure
•offering flexibility of settings to accommodate pathological variations in the patient’s
respiratory timing/pattern.
Stellar effectively provides this capability through:
•Learn Circuit—method to calculate circuit impedance so that pressure can be controlled
and estimated at the patient’s airway
•Vsync— an automatic algorithm to compensate for unintentional leak
•Mask selection—a correct selection indicates to Stellar how much leak through the mask
vent or leak port can be expected as the therapy pressure varies
•Mask fit—ensures an optimal seal for the patient interface to avoid unintentional leak
•TiControl—offers control over the inspiratory time limits between which the patient can
spontaneously cycle
•Trigger/Cycle sensitivities—five sensitivities for triggering and cycling offer flexibility to
personalise therapy and accommodate a range of patient conditions
•Rise/Fall Time—adjustable duration for transitions to both inspiration and expiration offer
opportunity for maximal comfort
•Pathology Defaults—offer a choice of disease-specific preset setting values to facilitate a
quick and sensible starting point to therapy.
Learn Circuit
The Learn Circuit procedure permits optimal therapy and monitoring accuracy, by measuring
and storing the breathing system impedance up to and including the vent. This allows the device
to accurately estimate the therapy pressure. For more information on performing a Learn
Circuit, see “Setup menu: Options” on page 42.
Vsync and mask selection
Stellar’s unique leak management combines Vsync and Mask Selection to monitor leak ie,
unintentional mask leak and vent leak, and effectively compensate for its potentially detrimental
effect on therapy.
It is important for a device to monitor the patient’s respiratory flow, which provides information
about lung ventilation and timing of the patient’s effort. Using the respiratory flow signal, the
device is able to trigger and cycle breaths that synchronise closely with the patient’s effort.
Leak flow, both unintentional and from the mask/inline vent, adds to the Total Flow measured
by the device’s flow sensor and obscures the true Respiratory Flow. Without leak
compensation, this would cause asynchronous triggering and cycling, as well as inaccurate data
monitoring which may impact clinical decision-making.
Stellar is able to extract the patient’s Respiratory Flow from the Total Flow. It uses information
from Mask Selection to accommodate for mask/in-line Vent Leak, and Vsync to compensate for
Unintentional Leak. That is:
Estimated Respiratory Flow = Total Flow – (Vent Leak + Unintentional Leak)
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8
Unintentional leak may arise due to factors such as poor mask fit, mask movement during sleep,
and fast therapy pressure transitions. When an unintentional leak is introduced (see below
graph), synchrony between the device and the patient is disrupted. The increased flow from a
leak can be interpreted as patient inhalation and cause the ventilator to trigger from EPAP to
IPAP out of time with the patient’s actual effort (A). Vsync responds rapidly to correct the
disruption and restore synchrony within 2-6 breaths (B) depending on the patient’s respiratory
rate and the size of the leak.
Unintentional leak flow varies with changes to therapy pressure or the size of the leak opening.
Vsync calculates changing leak by:
•monitoring average pressure and flow
•assuming that on average volume delivered to the patient is equal to volume exhaled by the
patient
•using this information to continuously estimate the size of the leak opening as it changes
•calculating the air flowing through the opening, knowing its size and the therapy pressure.
Unintentional leak
Mask vent leak
To t al fl ow
Patient respiratory flow
BA
Therapy Pressure
Patient Effort
Unintentional leak
True Respiratory Flow
To t a l F l o w
Unintentional leak introduced
Period of asynchrony
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9
Ensuring successful ventilation with Stellar
TiControl
TiControl™ allows the clinician to set minimum and maximum inspiratory time limits. Ti Min
and Ti Max can be set to either side of the patient's ideal spontaneous inspiratory time, ensuring
adequate time for gas exchange and offering a ’window of opportunity’ to cycle into EPAP.
For some patients whose inspiratory effort or flow are weak and insufficient, Ti Min prevents
the premature cycling to EPAP. Premature cycling to EPAP can result in insufficiently supported
breaths.
When breath detection becomes difficult due to excessive leak or inhibited exhalation effort or
flow, Ti Max effectively prevents prolonged inspiration. See “Setting TiControl” on page 55.
Trigger/Cycle sensitivities
Under normal conditions, the device triggers (initiates IPAP) and cycles (terminates IPAP and
changes to EPAP) as it senses the change in patient flow. Patient breath detection is enhanced
by the device’s automatic leak management feature—Vsync.
In addition, the device has five adjustable trigger/cycle sensitivities to optimise the sensing level
according to patient conditions.
For more information, see “Trigger/cycle sensitivities” on page 56. For characteristic data, see
“Technical specifications” on page 63.
Patient flow
Pressure
Ti Max
Ti Min Cycle
Window
Patient
Flow
Patient
Flow
Very Low
Medium
Very High
Adjustable Trigger Sensitivity Adjustable Cycle Sensitivity
Medium
Very High
Very Low
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Rise/Fall Time
Rise Time sets the time taken for the device to reach the set inspiratory pressure after
triggering. The greater the Rise Time value, the longer it takes for pressure to increase from
EPAP to IPAP. A controllable Rise Time allows the clinician to optimise the patient’s work of
breathing, comfort and synchrony.
Fall Time sets the time taken for the device to reach the set expiratory pressure after cycling.
The greater the Fall Time value, the longer it takes for pressure to decrease from IPAP to EPAP.
Adjustable Fall Time may in certain patients improve breathing comfort and synchrony.
For more information, see “Advanced Settings - Factory default settings and parameter ranges”
on page 36.
Pathology Defaults
The Pathology Defaults offer a choice of disease-specific preset setting values to facilitate
efficient commencement of therapy. You can select from four sets of respiratory system
mechanics. Before use you will need to review the set parameters on the Clinical Settings
screen.
*The Rise/Fall Time milliseconds scale is an approximate only.
Setting
S ST T PAC iVAPS
Obstructive
lung
disease
Restrictive
lung
disease
Obesity
Hypoventilation
Syndrome
Normal
lung
mechanics
IPAP [cm H2O]  13 11 15 11
EPAP or PEEP [cm H2O] 5575
PS [cm H2O]  8686
Rise Time [ms]* 150 300 300 200
Fall Time [ms]* 200 200 200 200
Trigger sensitivity    Medium Medium Medium Medium
Cycle sensitivity  High Low Medium Medium
Min PS [cm H2O] 4442
Max PS [cm H2O] 20 20 18 20
Ti Min [sec]  0.3 0.5 0.5 0.5
Ti Max [sec]  1. 0 1. 5 1. 5 1. 5
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Stellar 150 at a glance
Stellar 150 at a glance
The Stellar 150 comprises:
• Stellar 150 device •Hypoallergenic air filter • AC Power cord • Carry bag • 2 m air tubing
• ResMed USB stick • Low pressure oxygen connector.
The following optional components are compatible with Stellar 150:
• 3 m air tubing • SlimLine™ air tubing • clear air tubing (disposable) • H4i™ heated humidifier
• Antibacterial filter • Heat moisture exchanger filter (HMEF) • ResMed XPOD oximeter
• Nonin™ pulse oximetry sensors • FiO2monitoring kit (external cable, T-piece adapter)
• FiO2monitoring sensor • Stellar Mobility bag • ResMed leak port • Tubing wrap.
WARNING
The Stellar 150 should only be used with air tubing and accessories recommended by
ResMed. Connection of other air tubing or accessories could result in injury or damage to
the device.
ResMed regularly releases new products. Please check the catalogue of ventilation accessories
on our website at www.resmed.com.
Handle
Air filter cover
Oxygen inlet
H4i connector plug and
AC connection
XPOD pulse oximeter connection
FiO2sensor connection
Data port for USB stick
Data port for direct PC connection
DC power socket
Air outlet
Infrared
connection for
H4i humidifier
AC power socket
Power on/stand-by switch
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Patient interface
Both masks and tracheostomy tubes can be used with Stellar. To set the patient interface type
go to the Setup menu, select Clinical Settings, then Advanced Settings.
For information on using masks, see the mask manual. For a full list of compatible masks for
this device, see the Mask/Device Compatibility List on www.resmed.com on the Products
page under Service & Support. If you do not have internet access, please contact your
ResMed representative.
Humidification
A humidifier is recommended especially for patients experiencing dryness of the nose, throat
or mouth. For information on using a humidifier as part of:
•noninvasive ventilation, see “Setting up for noninvasive use” on page 13.
•invasive ventilation, see “Setting up for invasive use” on page 15.
Internal battery
CAUTION
The internal battery must be replaced every two years from the manufacturing date of the
Stellar 150. Replacement of the internal battery should only be performed by an
authorised service agent.
Note: The battery duration depends on the state of charge, the environmental conditions, the
condition and age of battery, the device settings and the patient circuit configuration.
In case of a mains power disruption, the device will operate using the internal battery if there is
no external battery connected to the device. The internal battery will operate for approximately
two hours under normal conditions (see “Technical specifications” on page 63). The power
status of the battery is displayed on top of the LCD screen. Check the battery status regularly
while operating the device with the internal battery and connect the device in time to mains
power or alternatively to the external battery.
Additionally the Internal battery use alarm will be displayed. Press the Alarm mute button to
clear the alarm.
To recharge the internal battery, connect the device to mains power. It can take up to three
hours to fully recharge the internal battery, however this can vary depending on environmental
conditions and if the device is in use.
Storing
The internal battery has to be discharged and recharged every six months.
1Remove the power cord while the Stellar 150 is providing therapy and let the device operate
with the internal battery to a charge level of 50%.
2Reconnect the power cord to the mains power while the device is operating. The internal
battery will be recharged.
Note: If the device is stored for a longer period the internal battery should be at the charge level
of approximately 50% to increase the durability.
ResMed USB stick
A ResMed USB stick may be used with the device either to help you to monitor the patient‘s
treatment, to provide the patient with updated device settings or to transfer settings from one
device to another. For more information, see “Data management” on page 51.
Use on an aircraft
ResMed confirms that the Stellar 150 can be used during all phases of air travel without further
testing or approval by the airline operator. See “Technical specifications” on page 63.
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Setting up for noninvasive use
Mobile use
The Stellar Mobility bag allows the Stellar to be used in mobile situations, eg, in a wheelchair. For
setup and correct use, see the Stellar Mobility Bag User Guide. For extended mobile use, the
ResMed Power Station II external power supply unit can be used as an additional power source.
Limitations apply to the use of oxygen with the Stellar Mobility Bag. For more information,
contact your local ResMed representative.
Setting up for noninvasive use
WARNING
•The air filter cover protects the device in the event of accidental liquid spillage onto the
device. Ensure that the air filter and air filter cover are fitted at all times.
•Make sure that all the air inlets at the rear of the device and under the device and vents
at the mask or at the leak port are unobstructed. If you put the device on the floor, make
sure the area is free from dust and clear of bedding, clothes or other objects that could
block the air inlets.
•Hoses or tubes must be non-conductive and antistatic.
•Do not leave long lengths of the air tubing or the cable for the finger pulse sensor
around the top of the bed. It could twist around the patient‘s head or neck while
sleeping.
CAUTION
•Be careful not to place the device where it can be bumped or where someone is likely
to trip over the power cord.
•Make sure the area around the device is dry and clean.
Notes:
•ResMed recommends using the AC power cord supplied with the unit. If a replacement
power cord is required, contact your ResMed Service Centre.
•Place the device on a flat surface near the head of the bed.
1Connect the power cord.
2Plug the free end of the power cord into a power outlet.
3Attach the H4i heated humidifier to the front of the Stellar 150.
If the H4i is not in use, and if applicable, connect the antibacterial filter firmly onto the air outlet
of the device (see “Attaching an antibacterial filter” on page 20).
1
2
34
5
AC locking clip
AC power cord
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4Connect one end of the air tubing firmly onto the air outlet of the H4i.
5Connect the mask system to the free end of the air tubing.
6Select the mask type (select Setup menu, then Clinical Settings, then Advanced Settings).
7Perform Learn Circuit (see “Setup menu: Options” on page 42).
Attaching the H4i heated humidifier
The Stellar 150 can be used with the H4i heated humidifier for noninvasive use when stationary.
It will be automatically detected when the Stellar 150 is turned on.
A humidifier is recommended especially for patients experiencing:
•nasal stuffiness/congestion
•rhinnorhea following the use of mask ventilation
•dryness of the nose, throat or mouth
•patients with thick secretions (eg, cystic fibrosis, bronchiectasis, etc)
•patients using oxygen.
Humidification may be required for patients who experience nasal and upper airway dryness as
a consequence of the high flow of air being directed through the nasal and oral passages. It may
also be required in those individuals who have tenacious secretions.
Mouth leaks occurring during the use of positive pressure therapy can significantly increase
nasal resistance. This increase in nasal resistance associated with mouth leaks may be
prevented by fully humidifying the inspired air. In most cases, using heated humidification is the
most effective way to decrease nasal resistance.
For information on using the H4i, see the H4i user guide.
WARNING
•Always place the H4i on a level surface below the level of the patient to prevent the
mask and tubing from filling with water.
•Make sure that the water chamber is empty and thoroughly dried before transporting
the humidifier.
•The H4i humidifier is not intended for mobile use.
•Do not overfill the water chamber, as during use this will cause water to spill into the air
circuit.
•For optimal accuracy and synchrony, perform Learn Circuit with a change of the circuit
configuration, in particular when adding or removing high impedance components (eg,
antibacterial filter, external humidifier, water trap, nasal pillow type mask or air tubing).
See “Setup menu: Options” on page 42.
CAUTION
Check the air circuit for water condensation. Use a water trap or a tubing wrap if
humidification is causing water condensation within the tube.
Notes:
•A humidifier increases resistance in the air circuit and may affect triggering and cycling, and
accuracy of display and delivered pressures. Therefore perform the Learn Circuit function
(see “Setup menu: Options” on page 42). The device adjusts the airflow resistance.
•The heating feature of the H4i is disabled when the device is not mains powered.
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