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PR System One REMstar Pro CPAP Machine with C-Flex Plus

Respironics introduces "System One" and C-Flex Plus through a new line of CPAP machines. The PR Pro CPAP machine is an intelligent solution that provides the highest level of comfort. New System One technologies like Humidity Control with Dry Box and Resistance Control for use with any mask, all are helping users achieve effective therapy.

Manufactured by Philips Respironics.

Item #DS450S

This product no longer available and this information is for reference only. Newer Model Available: PR System One REMstar Pro CPAP Machine with AutoIQ.
Replacement Parts

Have a question? Call us!

1-800-356-5221(Mon-Fri 8AM-10PM CST, Sat 8AM-6PM CST)

CPAP Video & FAQ

Videos


Frequently Asked Questions (FAQs)

What does CPAP therapy do?

CPAP therapy provides a constant airflow which holds the airway open so that uninterrupted breathing is maintained during sleep. It is traditionally provided through a nasal mask that seals around the nose to maintain the pressure level.

Which CPAP masks work on which machines?

All CPAP masks work with all machines.

How do I choose the machine that is right for me?

We provide our customers with many tools to make informed decisions about their machine purchases. Options include:

  • Calling a CPAP Expert Toll Free. 1-800-356-5221.

  • Comparison Charts. These charts compare available machines, feature by feature. If you don't know the meaning of a feature, click on the question mark for a definition. Click on the image or name of the product for more detailed product information, pictures and resources.

    CPAP Comparison Chart

    APAP Comparison Chart

    BiPAP Comparison Chart

  • Help Me Choose Guide. We created a guide to help you select the right machine according to your preferences. The guide asks you a series of questions regarding your preferences and your prescription. Based on your answers we provide you with a comparison chart of the machine that meet your criteria. Get started here:

    Help Me Choose - Machine

  • Browse Our Machine Product Categories. These categories show each machine our company offers, ranked by popularity. Popularity is determined by a mix of sales data and our in house opinion of the quality of the machine based on our experience and customer feedback. The best products float to the top of our categories.

    CPAP Machine Category

    APAP (Auto Adjusting) Machine Category

    BiPAP (Two Pressure) Machine Category

How can I compare different machines?

We work very hard to provide many different ways for our customers to compare products. Here are the machine product guides we have created and maintain:

  • CPAP Machine Comparison Guide. This guide stacks up every CPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular CPAPs, or all CPAP machines we sell.

    Compare Most Popular CPAP Machines

    Compare All CPAP Machines

  • Auto Adjusting Machine (APAP) Comparison Guide. This guide stacks up every APAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular APAPs, or all APAP machines we sell.

    Compare Most Popular APAP Machines

    Compare All APAP Machines

  • BiPAP, VPAP and BiLevel Comparison Guide. This guide stacks up every BiPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular BiPAPs, or all BiPAP machines we sell.

    Compare Most Popular BiPAP Machines

    Compare All BiPAP Machines

What comes with my machine?

Machines come with a six foot hose, power cord, at least one filter, and manuals. Most manufacturers include a carrying case which is designed specifically for their equipment. CPAP / BiPAP / APAP machines do not come with a delivery system or mask. CPAP Masks must be purchased separately.

To see the list of what specifically comes with each machine, you can browse for a machine. Then on the product page, click the "Specs" tab to see a full list of what comes with the machine.

Do all CPAPs use filters?

Yes, all CPAPs use at least one filter that is usually a type of foam material and washable. Some CPAPs offer finer filtration with the addition of a disposable paper filter.

Cleaning and changing filters is the only maintenance required for a CPAP machine.

The filters are located at the back of the machine at the air intake. The image below shows the black foam filter at the back of the Everest 3 CPAP Machine.

Are prescriptions required for mask, machine and/or humidifier purchases?

Yes. Federal law requires we have a valid prescription on file before we ship your mask, machine and/or humidifier.

We provide many easy ways to get your prescription:

  • We can request your prescription for you! When you checkout, just let us know you would like us to request your prescription, or you can log into your account to have us request your prescription.
  • Fax your prescription to our Toll Free fax number: 1-866-353-2727, or our international fax number: 713-541-7370
  • Email your prescription to cpap@cpap.com
  • Upload your prescription in your account, under the prescriptions section
For more information on prescriptions, please see our Prescription Section of the Learning Center.

What is exhalation relief?

Exhalation relief is a comfort feature offered by two manufactures which reduces the air flow at the time of exhalation making the breathing process more natural.

  • Respironics = C-Flex, C-Flex+, A-Flex and Bi-Flex
  • Resmed = EPR (Expiratory Pressure Relief)

What are the CPAP, BiPAP and Sleep Apnea related CPT or billing codes?

  • EO601 RR is CPAP Rental
  • E0601 NU is CPAP Purchase
  • A7034 is CPAP Mask
  • A7032 is CPAP Nasal mask cushion
  • A7033 is CPAP Nasal pillows
  • A7030 is CPAP Full face mask
  • A7031 is CPAP Full face mask cushion
  • A7044 is CPAP Oral interface
  • A7027 is CPAP Hybrid mask
  • A7028 is CPAP Hybrid mask cushion
  • A7029 is CPAP Hybrid mask nasal pillow
  • A7046 is CPAP Humidifier chamber
  • A7037 is CPAP Tubing, long and short hoses
  • A4604 is CPAP Heated tubing
  • A7038 is CPAP Disposable filter
  • A7039 is CPAP Gross particle (foam) filter
  • A7035 is CPAP Headgear
  • A7036 is CPAP Chinstrap
  • E0561 NU is CPAP Passover humidifier
  • E0562 NU is CPAP Heated humidifier
  • E0470 RR is BiPAP Rental
  • E0470 NU is BiPAP Purchase
  • E0471 RR is BiPAP-ST Rental
  • E0471 NU is BiPAP-ST Purchase

Other CPAP items are listed under E1399, which is miscellaneous.

What does a CPAP prescription need to say?

  • Contains one of the following words or phrases "CPAP" or "Continuous Positive Airway Pressure"
  • Contains your physician's contact information
  • Contains your physician's signature
  • Contains the patient's full name
  • Contains your specific pressure.
    • Example: 9 CM/H2O
    • Example: 9
    • Example: 14 CM/H2O
    • Example: 14

What is C-Flex?

C-Flex is a pressure relief feature that makes breathing back against CPAP pressure easier to do by reducing the pressure at the beginning of exhalation and returning to therapeutic pressure just before inhalation. Independent studies conducted by leading universities indicate that patient comfort, and therefore, patient CPAP compliance, is higher with machines that use C-Flex. C-Flex is a technology invented by Respironics, is proprietary, and is not available on other brands of CPAP Machines.

C-Flex Easy Breathing Technology Visual Graph C-Flex Easy Breathing Technology Visual Graph

C-Flex vs. Traditional CPAP: Brown University Study

cpaptalk.com Interview, C-Flex in the Remstar Pro and Remstar Auto

What is the difference between Bi-Flex and C-flex?

C-Flex only works at the start of an exhale. Bi-Flex works during the transition from exhalation to inhalation, the transition from inhalation to exhalation and during exhalation.

What types of Software are available?

There are two types of software available: Compliance software, and Advanced software.

Compliance software provides data such as patient hours, total machine operating hours, your pressure setting, and pressure relief information. Advance software includes compliance data and provides more detail such as AHI (Apnea/Hypopnea Index), Leakage, most pressure used, and a detailed usage histogram.

Compliance software is available with some standard CPAP machines. Advanced software is available with most top of the line CPAP machines, APAPs, and Bi-level machines as well.

What maintenance is required on machines?

The only care a CPAP or BiPAP machine requires is to clean or change the filters at the air intake. This keeps the internal parts from accumulating dust. Fine paper filters should be changed out every 30 days, or when they appear soiled. Foam washable filters should be rinsed with clear running water once a week, allowed to air dry, and reinserted.

There are some other suggested actions to care for your machine:

  • Keep the area around your machine clean by removing any dust from the area to improve the air quality delivered to your machine and you.
  • Keep the air intake of the machine unblocked. Curtains, bedding, and papers can easily block the air intake of your machine, reducing the airflow.
  • If a humidifier is used with your therapy, do not pick up the machine with the humidifier attached. With most machines it is easy to spill water from the humidifier chamber into the machine causing damage. Manufacturer warranties are voided by water damage to the machine. To avoid this, remove the chamber from the humidifier and then remove the humidifier from the machine rather than transporting them together.
  • If a humidifier is used you should empty the water from the chamber every morning. Accidents happen. If a family pet or family member moves the machine and humidifier with water in the chamber it is more likely that water could be spilled into your machine. Water damage to a machine voids the manufacturer warranty.

What is ramp?

The ramp button on a machine is a feature that allows for a gradual pressure build-up to your prescribed pressure. The feature is enjoyed by those with high pressures because they ease up to their pressure.

What data capable machines are available?

CPAP machines which record full data (such as AHI and leak info):


AUTOPAP ("Autotitrating CPAP" or "APAP") machines which record full data:


BILEVEL ("BiPAP") machines which record full data:


CPAP Machines that only record Compliance Data (Hours Used) are:

  • IntelliPAP Standard Travel CPAP Machine
  • PR System One REMstar DS150 CPAP Machine
  • PR System One REMstar Plus CPAP Machine with C-Flex
  • PR System One REMstar 60 Series Plus CPAP Machine with C-Flex
  • PR System One REMStar 60 Series SE CPAP Machine
  • S9 Escapeâ„¢ CPAP Machine with EPRâ„¢
  • SleepEasy II CPAP Machine with Built In Heated Humidifier and C-Flex
  • SleepStyle 234 CPAP Machine with Built In Heated Humidifier

    How do I use a battery to operate my CPAP?

    First you need to determine if your machine is configured to operate on DC power and has a DC power outlet. If your machine does have a DC power outlet and you want to run your marine battery, then you will need the correct DC cable for your machine and an adapter cable that fits over the cigarette lighter plug and ends in alligator clips.

    CPAP.com sells complete battery kits with everything you need for your machine including the right cables for your machine and the battery. You can find the right battery kit for your machine here.

    If your machine does not have a DC power outlet, then you will also need an inverter to be able to run your machine on battery power.

    If you have questions about the specific power needs of your machine, review the "Power" tab on your machine's product page, or give us a call at 1-800-356-5221.

    What is CPAP therapy?

    CPAP stands for Continuous Positive Airway Pressure. CPAP therapy is the most commonly recommended, and the most effective, treatment for obstructive sleep apnea.

    A CPAP machine provides air at a constant prescribed pressure. The air is delivered to the person through a tube and a CPAP mask. CPAP therapy provides a constant airflow which keeps the airway open so uninterrupted breathing is maintained during sleep. The air stream eliminates Sleep Apnea events and allows the person to get a restful sleep.

    The level of air pressure required to maintain your airway is determined during your sleep study. Your doctor will write a prescription for a CPAP machine set at that pressure.

    CPAP therapy is delivered through a nasal mask that seals around the nose or nasal pillows which seal at the nasal opening. Full face masks are available for a person who breathes through both the nose and mouth. Many innovative and comfortable options are available and advances in the delivery of CPAP therapy are continually occurring.

    For instance: Some machines offer a comfort feature such as FLEX or EPR technology. It provides exhalation relief, a slight drop in pressure at the time of exhalation to help make therapy more natural. APAP, BiPAP and BiLevel machines offer various levels of pressure throughout the night.

    What is the difference between C-Flex and A-flex?

    C-flex drops the pressure on exhale only. A-flex drops the pressure on the exhale but also helps with the transition from inhale to exhale.

    What is C-Flex+?

    C-Flex+ is an improved pressure relief technology over the previous C-Flex technology. Like C-Flex, C-Flex+ reduces the pressure at the beginning of exhalation. Like A-Flex, C-Flex+ softens the pressure transition from inhalation to exhalation to provide additional comfort in fixed-CPAP mode.

    C-Flex+ Easy Breathing Technology Visual Graph C-Flex+ Easy Breathing Technology Visual Graph

    What is A-Flex?

    A-Flex is a form of exhalation relief which helps the air pressure from an APAP machine mirror a person's breathing. Like C-Flex, A-Flex provides flow-based pressure relief at the beginning of exhalation. Like Bi-Flex, A-Flex softens the pressure transition from inhalation to exhalation to provide additional comfort in an auto-CPAP mode.

    A-Flex Easy Breathing Technology Visual Graph A-Flex Easy Breathing Technology Visual Graph

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