ResMed Astral 100 Series User Manual
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ResMed Astral 100 Series User Manual

Adult and pediatric ventilator
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  • Page 1 User guide English...

  • Page 2: Table Of Contents

    Contents Introduction .......................... 1 Indications for use ......................1 Contraindications ......................1 Adverse effects ........................ 2 General warnings and cautions ..................2 The Astral device ......................... 4 The Astral device interface ....................5 Touch screen ........................6 Information bar ......................... 7 Menu bar ..........................
  • Page 3 Connecting to mains power ......................39 Connecting the Astral External Battery ................40 Using the External Battery ........................ 40 Connecting to a ResMed Power Station (RPSII) ................41 Using the internal battery ....................41 Battery run time ..........................42 Storing and recharging ........................42 Connecting to an external DC power source ..............
  • Page 4 Technical specifications ..................... 66 Guidance and Manufacturer’s Declaration Electromagnetic Emissions & Immunity ..71 Guidance and manufacturer’s declaration—electromagnetic emissions...........71 Guidance and manufacturer’s declaration – electromagnetic immunity..........72 Recommended separation distances between portable and mobile RF communications equipment and the device .........................73 Symbols .........................

  • Page 5: Introduction

    Introduction Introduction The Astral device provides mechanical ventilation to both ventilation dependent and non-dependent patients. It delivers pressure and volume ventilation through either a valve or leak circuit, and is compatible with a range of accessories to support specific use cases. The information in this guide applies to both the Astral 100 and the Astral 150 devices.

  • Page 6: Adverse Effects

    Introduction Adverse effects Report unusual chest pain, severe headache or increased breathlessness to your physician. The following side effects may arise during use of the device: • drying of the nose, mouth or throat • nosebleed • bloating • ear or sinus discomfort •...
  • Page 7 A caution explains special measures for the safe and effective use of the device. CAUTION • Repairs and servicing of the device should only be performed by an authorised ResMed service representative. • The temperature of the airflow for breathing produced by the device can be as much as 6ºC higher than the temperature of the room.

  • Page 8: The Astral Device

    The Astral device The Astral device The following images describe the components of the Astral device. Description Adapter port Can be fitted with single limb adapter, single limb leak adapter or double limb adapter (Astral 150 only). Handle Inspiratory port (to patient) Provides an outlet for pressurised air to be delivered to the patient via the patient circuit.

  • Page 9: The Astral Device Interface

    The Astral device Description DC power inlet Device on/off push button Sensor connector Remote alarm five pin connector Low flow oxygen input (up to 30 L/min) Air inlet (complete with hypoallergenic filter) The Astral device interface The interface of the Astral device comprises several different features described in the following image. Description Touch screen Power source indicators...

  • Page 10: Touch Screen

    The Astral device Description Alarm mute/reset button Illuminates when an alarm is triggered and flashes when the sound is muted. Alarm bar Flashing red High priority alarm Flashing yellow Medium priority alarm Constant yellow Low priority alarm Touch screen The main method of interacting with the Astral device is via the touch screen. The display on the touch screen changes according to the function being performed.

  • Page 11: Information Bar

    The Astral device Description Start/Stop ventilation button Main screen Sub-menus Pressure bar Note: Do not access Clinical mode unless directed by a clinician. Information bar The Information bar is displayed at the top of the touch screen. The Information bar displays the operating status of the device, including patient type, current circuit configuration, programs, information messages, ventilation status, alarms and power status.

  • Page 12: Menu Bar

    The Astral device Menu bar The Menu bar provides access to the four main menus in the Astral device. Monitors menu View real-time patient data in either waveform or monitoring formats including pressure, flow, leak, tidal volume, synchronisation and oximetry. Setup menu Configure and view ventilation therapy and device settings.

  • Page 13: Main Screen

    The Astral device Main screen The Main screen displays the monitoring data, ventilation and device controls. Each function is accessed through the various menus and tabs. Pressure bar The Pressure bar displays real-time therapy data while the Astral device is ventilating. Patient pressure is shown as a bar graph.

  • Page 14: Using The Astral Device

    Using the Astral device for the first time When using the Astral device for the first time, ResMed recommends you first perform a functional test. A functional test will ensure the device is in proper working order before starting therapy. Information to assist you in resolving any issues is available in the Troubleshooting section.

  • Page 15: Powering On The Device

    Using the Astral device Powering on the device To power on the Astral device, simply press the green power on/off button at the back of the device. The device will perform a system check as shown on the main screen. On completion of the system check, the Patient Home screen and active program is displayed.

  • Page 16: Enhanced Access Feature

    Using the Astral device Enhanced access feature The Astral device offers an enhanced access feature ('Big button mode') to provide you with easier usability and accessibility. The 'Big button' can be used to start and stop ventilation, as well as to mute alarms.
  • Page 17 Using the Astral device 3. Move the Big buttons slider to On. Your enhanced button feature is now enabled. With this feature enabled, it is possible to switch between ‘Big Button’ mode and standard. Simply select the Home button from left hand corner of the Bottom bar. Your screen will return to standard button size and the Home icon will be replaced by the Big Button icon To return to Big Button mode, simply select the Big Button Icon from the bottom bar.

  • Page 18: Starting And Stopping Ventilation

    Note: If using the device for the first time, ResMed recommends performing a functional test before starting ventilation. Refer to Using the Astral device for the first time (see page 10).

  • Page 19: Locking And Unlocking The Touch Screen

    Using the Astral device Locking and unlocking the touch screen The touch screen can be unlocked at any time. To manually lock the touch screen, from the Information bar press . When the touch screen is locked the button is highlighted orange. Unlocking the touch screen Touch the screen anywhere and follow the on-screen prompts.
  • Page 20 Using the Astral device Monitoring screen The Monitoring screen displays all measured parameters in numerical form. Helpful hint! Your care provider may ask you to access this screen and report values from time to time. Trends screen The Trends screen shows the 5th and 95th percentile values, as well as the median for the last 30 days for each of the following parameters: •...

  • Page 21: Setup Menu

    Using the Astral device Setup menu The Setup menu displays four different sub-menus: • Circuit—to view the circuit • Settings—to view the ventilation mode and access Manual Breath and Sigh Breath screens • Data Transfer—to transfer data between the device and a personal computer via a USB stick •...

  • Page 22: Information Menu

    Using the Astral device Information menu The Information menu is comprised of three sub-menus: • Events—all logged event activity that has taken place is displayed. A breakdown of specific alarms, settings or system events can also be viewed. • Device—information about the actual device is displayed, eg, Model and Serial numbers, software versions, internal battery charge along with the hours since the last service and number of hours the device has been used.

  • Page 23: Adjusting Device Settings

    Using the Astral device Device setting Description Date Allows setting of the day, month and year of the current date. Time Allows setting of the hours and minutes of the current time. Language Sets the current language of the device selected from the list of available languages. Pressure unit Specifies displayed units for all pressure data and settings as cmH O, mBar or hPa.

  • Page 24: Manual Breath Feature

    Using the Astral device To change between programs: 1. From the Patient home screen, select the program you want to use. A summary of the program settings will be displayed. 2. Press Confirm to proceed with the change. The selected program becomes active and will be highlighted orange.

  • Page 25: Travelling With The Astral Device

    Astral carry bag to help security personnel understand the device and refer them to the following statement. • ResMed confirms that the Astral device meets the Federal Aviation Administration (FAA) requirements (RTCA/DO-160, section 21, category M) for all phases of air travel. Assembling patient circuits...
  • Page 26 Assembling patient circuits There are three circuit adapters: Adapter For use with Single limb leak Single limb circuit with intentional leak Single limb Single limb circuit with expiratory valve (expiratory valve integrated into the circuit) Double limb Double limb circuit (expiratory valve integrated into the adapter) OR single limb circuit with (Astral 150 only) intentional leak A Learn Circuit should be performed after any change of circuit.

  • Page 27: Fitting The Circuit Adapter

    Connecting a single limb circuit with intentional leak An intentional leak may be provided in-line using the ResMed Leak Valve or via an integrated mask vent. When using a circuit with intentional leak, estimation of the patient respiratory flow is enhanced by ResMed's automatic leak management feature Vsync.

  • Page 28: Connecting A Single Limb Circuit For Invasive Use

    Assembling patient circuits 5. If using a non-vented mask or tracheostomy connector, attach a ResMed Leak Valve to the free end of the air tubing ensuring that the Leak Valve is as close as possible to the patient. 6. Attach the patient interface (eg, mask) to the Leak valve or the free end of the air tubing as appropriate and adjust the mask type setting on the Astral device.

  • Page 29: Connecting A Single Limb Circuit With Expiratory Valve

    Assembling patient circuits Connecting a single limb circuit with expiratory valve To enable fast and accurate connection, use an Astral Quick Connect Single Limb Circuit. This custom accessory with its integrated proximal pressure sensor and expiratory valve control line, is designed specifically for use with Astral ventilators.
  • Page 30 Assembling patient circuits To connect a standard single limb valved circuit to the Astral: 1. Connect the Proximal pressure line to the upper connector of the Astral device single limb adapter. 2. Connect the PEEP control line to the lower connector of the Astral device single limb adapter. 3.

  • Page 31: Connecting A Double Limb Circuit (Astral 150 Only)

    Assembling patient circuits Connecting a double limb circuit (Astral 150 only) The Astral device measures exhaled air flowing through the double limb circuit adapter. This enables patient-exhaled tidal volume to be accurately measured and monitored. To connect a double limb circuit: 1.
  • Page 32 Assembling patient circuits To perform a Learn Circuit: 1. From the Setup main menu, select the Circuit sub-menu. 2. Press Start and follow the on-screen prompts. Note: Trigger type sets whether a pressure-based or flow-based trigger threshold is used when a Double circuit is selected.
  • Page 33 Assembling patient circuits The following icons are used to report the Learn Circuit results: Learn Circuit Results Icon Description Learn Circuit completed Learn Circuit not tested. Default circuit characteristics will be applied. Accuracy of control and monitoring may not be met.
  • Page 34 62) for suggested actions on the error code. If possible, replace the oxygen sensor as described in Replacing the oxygen sensor. Repeat Learn Circuit. If problem persists, return the device for servicing by an authorised ResMed Service Centre. If you choose to proceed with ventilation, FiO alarms will be disabled.

  • Page 35: Accessories

    Accessories Accessories For a full list of accessories, see Ventilation accessories on www.resmed.com under the Products page. If you do not have internet access, please contact your ResMed representative. WARNING Before using any accessory, always read the accompanying User Guide.

  • Page 36: Attaching A Humidifier

    Accessories Attaching a humidifier A humidifier or HME is recommended for use with the Astral device. WARNING • For invasive ventilation, since the patient's upper respiratory system is bypassed by an artificial airway device (for example endotracheal or tracheostomy tube) humidification of the inspired gas is required to prevent lung injury.

  • Page 37: Attaching A Heat Moisture Exchange (Hme)

    Accessories Attaching a Heat Moisture Exchange (HME) HME's are passive humidification systems that retain heat and moisture from the patient's exhaled gases via an internal membrane. An HME should not be used with active humidification. An HME can be used with the Astral device with a double limb circuit or single limb circuit with integrated valve. WARNING Only use HMEs that comply with the relevant safety standards, including ISO 9360-1 and ISO 9360-2.

  • Page 38: Adding Supplemental Oxygen

    Accessories To attach an antibacterial filter: 1. Fit the antibacterial filter to the inspiratory port of the device. 2. Connect the air tubing to the other side of the filter. 3. Perform the Learn Circuit function. 4. Attach the patient interface to the free end of the air tubing. WARNING •...
  • Page 39 Accessories WARNING • Use only medical grade oxygen sources. • Always ensure that the device is ventilating before the oxygen supply is turned on. • Oxygen flow must be turned off when the device is not ventilating so that oxygen does not accumulate within the device enclosure.

  • Page 40: Attaching A Nebuliser

    2. Remove the oxygen supply tubing from the oxygen connector port. Attaching a nebuliser If required, a nebuliser can be used in conjunction with the Astral device. ResMed recommends Aerogen nebuliser products—designed to operate in-line with standard ventilator circuits and ®...

  • Page 41: Attaching Other Accessories

    Accessories Attaching other accessories Attaching a pulse oximeter WARNING • Only use compatible NONIN™ finger pulse sensors*. • Pulse oximeter sensors must not be used with excessive pressure for prolonged periods as this can cause patient pressure injury. • The pulse oximeter sensor and cable needs to be verified for compatibility with Astral, otherwise patient injury can result.

  • Page 42: Attaching A Remote Alarm

    Attaching a remote alarm The ResMed Remote Alarm II has been designed for use with Astral devices. The Remote Alarm II alerts you to an alarm that requires immediate attention. It triggers an audible and visual alarm when an alarm is triggered on the Astral device.

  • Page 43: Connecting To Mains Power

    Ensure that the power cord does not pose a tripping or choking hazard. To connect to mains power: 1. Connect the DC plug of the supplied ResMed external power supply unit to the rear of the Astral device. 2. Before connecting the power cord to the ResMed power supply unit, ensure the end of the connector of the power cord is correctly aligned with the input socket on the power supply unit.

  • Page 44: Connecting The Astral External Battery

    Accessories Connecting the Astral External Battery The Astral External Battery has been designed specifically for use with the Astral Series of ventilators. It is intended to provide Astral ventilators with an additional eight hours of power during typical use. For full details on using the Astral External Battery, refer to the External Battery user guide. Using the External Battery Connecting a fully charged External Battery to the Astral device can provide an additional 8 hours of power during typical use.

  • Page 45: Connecting To A Resmed Power Station (Rpsii)

    Accessories Connecting to a ResMed Power Station (RPSII) The RPSII provides the Astral device with eight hours of power during typical use. To use, connect the power cord of the RPSII to the DC inlet port on the device. CAUTION •...

  • Page 46: Battery Run Time

    Accessories CAUTION • Revert to AC mains power when the remaining capacity of the battery is low. • The internal battery may stop charging when ambient temperatures of 35°C or more are reached. • The internal battery will be depleted if the device is left in storage for an extended period of time.

  • Page 47: Connecting To An External Dc Power Source

    Accessories To prepare the internal battery for long-term storage: 1. Check that the battery charge level is between 50 and 100%. If not, charge the device to at least 50% prior to storage. 2. Remove the power cord from the Astral. 3.

  • Page 48: Astral Carry Bag

    Accessories Astral Carry Bag The Astral device should always be packed in its Carry Bag when not in use to prevent damage to the device. WARNING The Astral should not be operated while in the Carry Bag. To ventilate while travelling, use the Astral Mobility bag or SlimFit mobility bag.

  • Page 49: Alarms

    Alarms Alarms The Astral device activates alarms to alert you to conditions that require attention to ensure patient safety. When an alarm is activated, the Astral device provides both audible and visual alerts, and displays an alarm message in the Alarm display on the Information bar. As part of the alarm system (eg, the overpressure protection and system alarms), Astral may perform an automatic restart.

  • Page 50: Alarm Priority

    Alarms Indicator Description Alarm mute/reset button State: no light – no active alarms • steady light – active alarm/s • flashing light – alarm mute on. • This button also allows you to: mute the audible alert • reset the currently displayed alarm (if permitted). •...
  • Page 51 Alarms The following list of alarms is ordered by relative importance within priority. High priority alarms Medium priority alarms Low priority alarms Total power failure * High pressure Using internal battery Circuit disconnection Low PEEP Battery 1 fault Low Pressure High PEEP Battery 2 fault Obstruction...

  • Page 52: Viewing The Active Alarms

    Alarms Viewing the active alarms in the Alarm display indicates that there are multiple active alarms. Although multiple alarms can be active simultaneously, the Alarm display only shows the highest priority alarm. The full set of active alarms is displayed in the Active alarms screen. When the highest priority alarm is cleared, the next highest priority alarm displays in the Alarm display.

  • Page 53: Resetting Alarms

    Alarms Helpful hint! You can adjust the volume of the audible alert. For information, refer to Device settings. After any adjustment, make sure you can still hear the alarm clearly from a distance. Resetting alarms Resetting an alarm removes that alarm from the Alarm display and the Active alarms screen, and turns off the visual and audible alerts.

  • Page 54: Testing The Alarm Sounders And Indicators

    Alarms WARNING • When adjusting alarm volume, ensure that the alarm can be heard above the ambient noise levels that the patient may experience in a variety of settings, including use in noisy environments or inside mobility bags. In the example below, your Clinician has maintained the default alarm volume of three. This means the '1' and '2' volume options are disabled and you are free to increase and decrease the alarm Volume levels between '3' and '5'.

  • Page 55: Testing The Remote Alarm

    Alarms CAUTION If only one beep is heard, or the Alarm bar does not flash red, then yellow, return the device for servicing. Testing the Remote Alarm The Remote Alarm generates an audible and visual signal when an alarm is triggered on the ventilator. CAUTION A test of the Remote Alarm should be performed prior to initial use and every change of battery.

  • Page 56: Detecting Circuit Disconnection And De-Cannulation

    Detecting circuit disconnection and de-cannulation Detecting circuit disconnection and de-cannulation Inadvertent disconnection of a circuit component or accidental removal of a cannula poses a hazard to a dependent patient. Astral is equipped with a number of alarms that when used in conjunction with the Disconnection Alarm are able to reliably detect circuit disconnection (including de-cannulation).

  • Page 57: Astral Disconnection Alarm

    Detecting circuit disconnection and de-cannulation Astral Disconnection Alarm The Astral Disconnection Alarm constantly measures circuit resistance to detect disconnection during therapy. The high priority Disconnection Alarm will activate when the device detects a disconnection that persists continuously for more than the alarm Activation Time preset by your clinician. If the degree of disconnection is resolved within this time, the Alarm Activation Time will be reset.

  • Page 58: Data Management Process

    Information bar alerts you to a failed transfer. WARNING Only connect devices specially designed and recommended by ResMed to the data communication ports. Connecting other devices could result in patient injury, or damage to the Astral device.

  • Page 59: Cleaning And Maintenance

    Cleaning and maintenance Cleaning and maintenance The cleaning and maintenance described in this section should be carried out regularly. Refer to the user guides for the patient interface, humidifier and other accessories in use for detailed instructions for care and maintenance of those devices. WARNING •...

  • Page 60: Servicing

    Failure to do so could void your Astral device warranty, damage the Astral device or result in possible injury or death. Note: Retain the original packaging of the Astral device for use when shipping to/from an authorised ResMed Service Centre.

  • Page 61: Maintenance Timetable

    Cleaning and maintenance Maintenance Timetable The Astral device should be serviced by an authorised ResMed Service Centre according to the following schedule. The Astral device is intended to provide safe and reliable operation provided that it is operated and maintained in accordance with the instructions provided by ResMed. As with all electrical devices, if any irregularity becomes apparent, you should exercise caution and have the device inspected by an authorized ResMed Service Centre.

  • Page 62: Troubleshooting

    Troubleshooting If there is a problem, try the following suggestions. If the problem cannot be solved, contact your care provider or ResMed. Alarm troubleshooting The most common reason for an alarm to sound is because the system has not been properly assembled or a Learn Circuit has not been correctly performed for each program.
  • Page 63 Troubleshooting Alarm message Action Flow sensor fault Replace expiratory flow sensor. Flow sensor not calibrated Perform a Learn Circuit. Check the patient's status. High FiO Check and adjust the oxygen supply. Perform a Learn Circuit to recalibrate the oxygen sensor. Check the patient's status.
  • Page 64 Troubleshooting Alarm message Action Check the patient's status. Low FiO Check for leak. Check the oxygen supply and connections to the device. Perform a Learn Circuit to recalibrate the oxygen sensor. Check the patient's status and airway. Low MVe Inspect the circuit and the expiratory valve for obstruction or leaks. Perform a Learn Circuit.
  • Page 65 Power fault / no charging Check connection to mains power (if present). This can be caused by the battery temperature being out of range. If problem persists, contact your ResMed Service Centre. Safety reset complete The device detected a fault and was reset.

  • Page 66: Learn Circuit Troubleshooting

    Troubleshooting Learn Circuit troubleshooting Error code Action Hardware fault detected. Contact an authorised Service Centre. 104, 105 During the first step of the Learn Circuit, check that the inspiratory port and air inlet filter of the Astral device are clear of obstructions; and the circuit is not connected to the inspiratory port.
  • Page 67 Troubleshooting Error code Action Unable to learn the circuit. Ensure that the circuit is not moved until completion of the test. Check the circuit and attached accessories for blockages. Ensure that there are no sharp bends or kinks in the circuit and the patient end is not blocked.
  • Page 68 Troubleshooting Error code Action Unable to learn the circuit. Ensure that the circuit is not moved until completion of the test. Check the circuit and attached accessories for blockages. Ensure that there are no sharp bends or kinks in the circuit and the patient end is not blocked.

  • Page 69: General Troubleshooting

    Troubleshooting General troubleshooting Issue Action Condensation forming in circuit Condensation may form due to high humidity settings and low ambient temperatures. Adjust humidifier settings in accordance with manufacturer's instructions. Touch screen damaged or If you are unable to power off the Astral device normally, use the following forced non-responsive shutdown procedure: Disconnect any external power source (eg, AC mains or external battery).

  • Page 70: Technical Specifications

    Technical specifications Technical specifications Operating pressure range Single limb with valve or double limb with valve: 3 to 50 hPa Single limb with intentional leak: 2 to 50 hPa CPAP: 3 to 20 hPa Maximum working pressure limit: 10 to 55 hPa Forced cycling occurs if the Pressure alarm limit is exceeded.
  • Page 71 Technical specifications Inspiratory port / double limb adapter 22 mm taper, compatible with ISO 5356-1:2004 Anaesthetic & Respiratory Equipment – Conical Connectors Pressure measurement Internally mounted pressure transducers Flow measurement Internally mounted flow transducers Power supply AC 100–240V, 50–60Hz, 90 W 3.75 A continuous, 120 W / 5A peak 110V/400 Hz External DC Power Supply 12 - 24V DC 90 W, 7.5 A / 3.75 A...
  • Page 72 IP21 (Protected against finger sized objects and against vertically dripping water.) when placed on a table stand or when used with the ResMed Homecare Stand or when the RCM or RCMH is attached.
  • Page 73 WARNING ResMed does not recommend 500 mL as the upper limit for the pediatric tidal volume use; however, clinicians may choose this upper limit based on their clinical determination. ** To achieve specified accuracies, a successful Learn Circuit must be performed.
  • Page 74 Technical specifications Pneumatic flow path...

  • Page 75: Guidance And Manufacturer's Declaration Electromagnetic Emissions & Immunity

    & Immunity Medical electrical equipment needs special precautions regarding EMC and needs to be installed and put into service according to EMC information provided in this document. This declaration currently applies for the following ResMed devices: • Astral Series of Ventilators.

  • Page 76: Guidance And Manufacturer's Declaration - Electromagnetic Immunity

    Technical specifications Guidance and manufacturer’s declaration – electromagnetic immunity These devices are intended for use in the electromagnetic environment specified below. The customer or the user of the device should assure that the device is used in such an environment. Immunity test IEC60601-1-2 test Compliance level Electromagnetic environment—guidance...

  • Page 77: Recommended Separation Distances Between Portable And Mobile Rf Communications Equipment And The Device

    Technical specifications To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the device is used exceeds the applicable RF compliance level above, the device should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the device.

  • Page 78: Symbols

    If you need information on these disposal systems, please contact your local waste administration. The crossed-bin symbol invites you to use these disposal systems. If you require information on collection and disposal of your ResMed device please contact your ResMed office, local distributor or go to www.resmed.com/environment.

  • Page 79: Standards Compliance

    - Part 2: Home care ventilators for ventilator-dependent patients • ISO 10651-6 Lung ventilators for medical use - Particular requirements for basic safety and essential performance - Part 6: Home care ventilatory support devices. Training and support For training and support materials, please contact your ResMed representative. English...

  • Page 80: Limited Warranty

    • This warranty is only available to the initial consumer. It is not transferable. If the product fails under conditions of normal use, ResMed will repair or replace, at its option, the defective product or any of its components. This Limited Warranty does not cover: a) any damage caused as a result of improper use, abuse, modification or alteration of the product;...

  • Page 81: Appendix A: Definitions

    Appendix A: Definitions Appendix A: Definitions Ventilation settings definitions The available settings will vary with the selection of the ventilation mode. Each mode details the settings available. Setting Definition Apnoea Definition Apnoea Definition sets the type of breath which must be delayed for an apnoea to be detected.
  • Page 82 Appendix A: Definitions Setting Definition P control max Maximum allowed pressure control (P control max) sets the maximum pressure control above PEEP allowed to achieve the target safety volume. Patient type Select from Adult or Paediatric. This setting configures the default values and ranges available for ventilation settings and determines circuit resistance acceptance criteria applied in the Learn Circuit.

  • Page 83: Measured And Calculated Parameter Definitions

    Appendix A: Definitions Measured and calculated parameter definitions The following measured and calculated parameters are displayed during configuration or during ventilation. Each Ventilation mode details the parameters displayed. Parameter Definition Average of percentage of Oxygen delivered to circuit. I:E is the ratio of the inspiratory period to the expiratory period. The measured I:E ratio is displayed as a monitored parameter during ventilation.
  • Page 84 Appendix A: Definitions Parameter Definition Resp. rate Respiratory rate (Resp. rate) is the number of breaths per minute averaged over the last eight breaths. The measured Resp. rate is displayed as a monitored parameter during ventilation. RSBI Rapid Shallow Breathing Index (RSBI) is calculated by dividing the breath rate by Tidal Volume.
  • Page 85 See www.resmed.com for other ResMed locations worldwide. Astral is a trademark and/or registered trademark of the ResMed family of companies. For patent and other intellectual property information, see www.resmed.com/ip. CaviCide is a trademark of Metrex. Mikrozid is a trademark of Schülke & Mayr. Velcro is a trademark of Velcro Industries B.V.

This manual is also suitable for:

Astral 150 series

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