FDA Adverse Event Malfunction Summary report: N

RD SET

MDR report key: 23936813 · Received December 31, 2025

Report

Report Number
3019388613-2025-00188
Event Type
Malfunction
Date Received
December 31, 2025
Date of Event
December 2, 2025
Report Date
December 5, 2025
Manufacturer
MASIMO - 15750 ALTON PKWY
Product Code
DQA
UDI-DI
00843997014298
PMA / PMN Number
K180046
Product Problem
Yes
Report Source
Manufacturer report
Reporter Location
SZ
Reporter Occupation
OTHER HEALTH CARE PROFESSIONAL
Health Professional
Yes

Narratives

Additional Manufacturer Narrative · 0

OTHER TEXT: THE RETURNED SENSOR WAS EVALUATED. THE SENSOR PASSED VISUAL INSPECTION AND CONTINUITY TESTING. THE SENSOR WAS ABLE TO OBTAIN ACCURATE READINGS CONTINUOUSLY DURING FUNCTIONAL TESTING. THE SENSOR WAS DETERMINED TO BE FUNCTIONING AS DESIGNED. HEALTH EFFECT IMPACT CODE: NO ADVERSE EVENT, NO PATIENT IMPACT.

Additional Manufacturer Narrative · 0

OTHER, OTHER TEXT: BASED ON ADDITIONAL INFORMATION THE FOLLOWING FIELDS WERE CORRECTED: SECTION D. SUSPECT MEDICAL DEVICE, G. ALL MANUFACTURERS, AND H. DEVICE MANUFACTURERS ONLY: D1. BRAND NAME WAS LNCS-II RAINBOW; IS RD SET. D4. MODEL # WAS 4067; IS 4052. D4. LOT # WAS <BLANK>; IS (B)(6). D4. UNIQUE DEVICE IDENTIFIER (UDI) # WAS (B)(4). G4. PMA/510(K) # WAS K080238; IS K180046. H4. DEVICE MANUFACTURE DATE WAS <BLANK>; IS 11/24/2022 H3 OTHER TEXT: SENSOR NOT RETURNED.

Additional Manufacturer Narrative · 0

OTHER, OTHER TEXT: THE DEVICE HAS NOT BEEN RETURNED TO THE INVESTIGATION FACILITY TO ALLOW FOR AN ANALYSIS TO BE PERFORMED. IF THE PRODUCT IS RECEIVED FOR EVALUATION OR NEW INFORMATION IS OBTAINED, A FOLLOW UP REPORT WILL BE SUBMITTED. HEALTH EFFECT IMPACT CODE: NO ADVERSE EVENT, NO PATIENT IMPACT, H3 OTHER TEXT: SENSOR NOT RETURNED.

Description of Event or Problem · 0

THE CUSTOMER REPORTED "THE SENSOR STOPPED WORKING WHEN THE PATIENT WAS CONNECTED, BUT THERE WAS NO BREAKAGE ON THE DEVICE. THIS TYPE OF SENSOR HAS A HIGHER IMPEDANCE, RESULTING IN A SATURATION READING APPROXIMATELY 8-10 POINTS LOWER THAN ARTERIAL BLOOD GAS ANALYSIS. THIS HAS BEEN REPORTED SEVERAL TIMES BY MY TEAM. THE PERFUSION SIGNAL IS ABOVE 1, INDICATING A GOOD SIGNAL AND WAVEFORM." "THE CLINICIANS OBSERVED A SIGNIFICANT DISCREPANCY BETWEEN THE BLOOD GAS MEASUREMENT AND THE SPO2 MEASUREMENT." THE SPO2 MEASUREMENT FROM THE SENSOR WAS 99% AND THE ABG SO2 MEASUREMENT WAS 83.7%. THERE WAS NO PATIENT IMPACT OR CONSEQUENCE REPORTED.

Description of Event or Problem · 0

THE CUSTOMER REPORTED "THE SENSOR STOPPED WORKING WHEN THE PATIENT WAS CONNECTED, BUT THERE WAS NO BREAKAGE ON THE DEVICE. THIS TYPE OF SENSOR HAS A HIGHER IMPEDANCE, RESULTING IN A SATURATION READING APPROXIMATELY 8-10 POINTS LOWER THAN ARTERIAL BLOOD GAS ANALYSIS. THIS HAS BEEN REPORTED SEVERAL TIMES BY MY TEAM. THE PERFUSION SIGNAL IS ABOVE 1, INDICATING A GOOD SIGNAL AND WAVEFORM." "THE CLINICIANS OBSERVED A SIGNIFICANT DISCREPANCY BETWEEN THE BLOOD GAS MEASUREMENT AND THE SPO2 MEASUREMENT." THE SPO2 MEASUREMENT FROM THE SENSOR WAS 99% AND THE ABG SO2 MEASUREMENT WAS 83.7%. THERE WAS NO PATIENT IMPACT OR CONSEQUENCE REPORTED.

Description of Event or Problem · 0

THE CUSTOMER REPORTED "THE SENSOR STOPPED WORKING WHEN THE PATIENT WAS CONNECTED, BUT THERE WAS NO BREAKAGE ON THE DEVICE. THIS TYPE OF SENSOR HAS A HIGHER IMPEDANCE, RESULTING IN A SATURATION READING APPROXIMATELY 8-10 POINTS LOWER THAN ARTERIAL BLOOD GAS ANALYSIS. THIS HAS BEEN REPORTED SEVERAL TIMES BY MY TEAM. THE PERFUSION SIGNAL IS ABOVE 1, INDICATING A GOOD SIGNAL AND WAVEFORM". "THE CLINICIANS OBSERVED A SIGNIFICANT DISCREPANCY BETWEEN THE BLOOD GAS MEASUREMENT AND THE SPO2 MEASUREMENT". THE SPO2 MEASUREMENT FROM THE SENSOR WAS 99% AND THE ABG SO2 MEASUREMENT WAS 90%. THERE WAS NO PATIENT IMPACT OR CONSEQUENCE REPORTED.

Devices

Seq Brand Generic Product Code Manufacturer Model Lot UDI-DI
2707350 RD SET OXIMETER DQA MASIMO - 15750 ALTON PKWY 4052 22M5H 00843997014298

Patients

Seq Age Sex Outcome Treatment
1 65 YR Female