Reported Reactions

Devices › Ventilator, non-continuous (respirator)

Device brand name · Ventilator non-continuous respirator

REMstar Pro C-Flex+: medical device reports filed with FDA

14,643 reports name it, 2021–2026. Manufacturer given most often on reports: Respironics. Product code BZD.

14,643
device reports naming the brand
0.1% of all MAUDE reports · about 2,836 a year
4,689
reports, 12 months to August 2026
2,853 in the 12 months before
84.9%
classified as malfunction
80.7% across the product code
1.2%
classified as death, as reported
176 reports · not verified by FDA

FDA's MAUDE database holds 14,643 reports that name the brand "REMstar Pro C-Flex+" (ventilator non-continuous respirator), received between May 2021 and August 2026; the manufacturer given most often on reports is Respironics. Spellings of one product vary from report to report.

4,689 reports arrived in the 12 months to August 2026, up 64% from 2,853 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (84.9%), injury (13.9%) and death (1.2%); across all ventilator, non-continuous (respirator) reports (product code BZD) death is recorded in 1.5% and malfunction in 80.7%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are degraded (99.4%), contamination (10.4%) and overheating of device (1.9%). The patient problems coded most often are cancer, headache and dizziness. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Reports by month, five years

06461,291Sep 2021: 6Oct 2021: 17Nov 2021: 19Dec 2021: 222022Jan 2022: 106Feb 2022: 91Mar 2022: 112Apr 2022: 182May 2022: 593Jun 2022: 874Jul 2022: 1,147Aug 2022: 231Sep 2022: 286Oct 2022: 145Nov 2022: 270Dec 2022: 1042023Jan 2023: 110Feb 2023: 91Mar 2023: 58Apr 2023: 55May 2023: 96Jun 2023: 63Jul 2023: 69Aug 2023: 66Sep 2023: 70Oct 2023: 54Nov 2023: 77Dec 2023: 722024Jan 2024: 60Feb 2024: 187Mar 2024: 148Apr 2024: 210May 2024: 245Jun 2024: 443Jul 2024: 305Aug 2024: 409Sep 2024: 54Oct 2024: 573Nov 2024: 217Dec 2024: 912025Jan 2025: 189Feb 2025: 787Mar 2025: 562Apr 2025: 52May 2025: 60Jun 2025: 119Jul 2025: 91Aug 2025: 58Sep 2025: 37Oct 2025: 70Nov 2025: 1,291Dec 2025: 872026Jan 2026: 410Feb 2026: 1,175Mar 2026: 785Apr 2026: 76May 2026: 25Jun 2026: 167Jul 2026: 504Aug 2026: 62

Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

By year received

02,0714,1412021: 7220212022: 4,14120222023: 88120232024: 2,94220242025: 3,40320252026: 3,2042026

Event type and report source

Event type, as classified on the report

Death1.2%176
Injury13.9%2,031
Malfunction84.9%12,436
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%14,642
Voluntary report0%1
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 303,240 reports carrying product code BZD. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Degraded14,55199.4%95.4%
Contamination1,53010.4%4.4%
Overheating of device2841.9%0.7%
Thermal decomposition of device190.1%0.2%
Contamination /decontamination problem120.1%0.1%
Material integrity problema problem with the device material120.1%0.2%
Device contamination with chemical or other material110.1%0.1%
Device emits odor80.1%0.2%
Noise, audible70%0.1%
Excessive heating60%0.1%
Unraveled material40%0%
Activation problem30%0%
Temperature problem30%0.1%
Activation failure20%0%
Calcified20%0%
Contamination of device ingredient or reagent20%0%
Crackthe device cracked20%0%
Device contaminated during manufacture or shipping20%0%
Improper chemical reaction20%0%
Smoking20%0.1%

FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.

Patient problems coded

Patient problem (FDA code)ReportsShare
Cancer9136.2%
Headachehead pain8986.1%
Dizzinesslight-headedness or unsteadiness7535.1%
Asthmaasthma5693.9%
Eye irritationeye irritation3832.6%
Dyspneashortness of breath3392.3%
Respiratory tract infectiona respiratory infection2831.9%
Inflammationinflammation2771.9%
Skin inflammation/ irritation2681.8%
Nauseafeeling sick2591.8%
Vomitingbeing sick2241.5%
Sore throat2141.5%
Hypersensitivity/allergic reaction2051.4%
Coughcough2021.4%
Appropriate clinical signs, symptoms and conditions term/code not available2011.4%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureREMstar Pro C-Flex+Product code BZDAll MAUDE reports
Reports14,643303,24026,136,888
Share of that pool—4.8%0.1%
Classified as death, per 1,000 reports12159
Classified as injury13.9%17.7%36.2%
Classified as malfunction84.9%80.7%62.3%
Filed by the manufacturer100%99%94.9%

Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Other brands with product code BZD

BrandReportsLatest 12 monthsClassified as death
DreamStation Auto CPAP146,78027,7410.9%
REMstar Auto A-Flex19,6567,0831%
DreamStation Auto BiPAP15,3168711.8%
DreamStation CPAP13,8953362.5%
Philips CPAP Device12,779585.5%
DreamStation CPAP Pro10,7896740.8%
REMstar AutoA-Flex8,6591,7321.1%
REMstar Auto5,0891,4240.9%
BiPAP Auto BiFlex4,4871,3271.4%
DreamStation4,2101,7031.6%
REMstar Plus C-Flex3,6821,5820.8%
Dreamstation Auto3,150380.3%
DreamStation BiPAP Pro3,0491081.9%
REMstar Plus2,5814991.9%
Philips CPAP2,470114.3%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."

Questions about REMstar Pro C-Flex+ reports

How many FDA reports name REMstar Pro C-Flex+?

14,643 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 4,689 in the latest 12 months.

What kinds of events are reported?

malfunction (84.9%), injury (13.9%) and death (1.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

degraded (99.4%), contamination (10.4%), overheating of device (1.9%), thermal decomposition of device (0.1%) and contamination /decontamination problem (0.1%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%) and voluntary reports (0%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that REMstar Pro C-Flex+ was at fault?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."

How do I report a problem with a medical device?

Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.