Magnetic CPAP Masks: A Growing Concern for Patient Safety

Magnetic CPAP Masks

ResMed has sold millions of magnetic CPAP masks since 2014 and received only five reports of serious harm related to the magnets, which were reported to authorities.

Introduction to Magnetic CPAP Masks

The medical devices domain is facing a wave of safety concerns as ResMed, a prominent manufacturer of continuous positive airway pressure (CPAP) machines, issues an urgent field safety notice regarding its magnetic masks. This development comes on the heels of a prolonged recall by competitor Philips, raising alarm bells about the safety of these devices, particularly for individuals with implanted medical devices such as pacemakers. In this article, we will delve into the details of ResMed’s warning, explore the implications for patient safety, and draw comparisons with the ongoing challenges faced by Philips in the respiratory devices domain.

ResMed’s Urgent Safety Notice

ResMed recently issued an urgent field safety notice, cautioning users about the potential risks associated with the use of magnetic CPAP masks around implanted medical devices. The warning, while not a formal recall, emphasizes the need for users to be aware of contraindications and warnings associated with certain ResMed devices. The affected devices include a range of full face masks, nasal masks, and non-vented masks designed for delivering positive airway pressure (PAP) therapy.

The magnets embedded in the frame and lower headgear clips of these masks, aimed at facilitating adjustments for users, are identified as potential sources of interference with implanted medical devices and metal-based implants. These include pacemakers, neurostimulators, insulin pumps, and various other implants such as stents, valves, screws, electrodes, and cranial plates. ResMed, in its Nov. 20 letter, updated the user guides for these masks to underscore the risk of magnetic interference with these critical medical devices.

Incident Reports and Risk Mitigation

ResMed reported that, out of tens of millions of magnet-equipped masks sold worldwide between 2014 and the present, only five instances of serious harm potentially related to magnetic interference have been reported. These cases involved interference with implantable cardioverter defibrillators and cerebrospinal fluid shunts, however, fortunately, none resulted in permanent injuries or fatalities. Despite the relatively low incidence, ResMed has taken a proactive approach to mitigate potential risks.

In the updated instructions for use, ResMed advises users to keep magnet-equipped masks at least six inches away from susceptible implants. Furthermore, individuals who have or are frequently close to anyone with contraindicated implants are recommended to switch to masks without magnets to eliminate the risk of interference. This cautious approach reflects the evolving landscape of patient safety and underscores the responsibility of medical device manufacturers to promptly address emerging concerns.

Philips’ Recall and Industry-Wide Implications

ResMed’s safety warning echoes the challenges faced by Philips, which has been grappling with the consequences of a massive recall involving CPAP and BiPAP machines. Philips initiated the recall due to concerns about the breakdown of polyester foam in its respiratory support devices, affecting approximately 22 million masks globally. The recall extended to magnetic headgear clips and straps used in various models, including Amara View, DreamWisp, DreamWear, Wisp, Wisp Youth, and Therapy Mask 3100.

The magnets in these masks were found to potentially interfere with a range of implanted medical devices, including pacemakers, neurostimulators, metallic stents, ocular implants, aneurysm clips, and more. The strength of the magnetic fields raised the risk of interference from at least six inches away, prompting the FDA to assign a Class I rating, its most serious classification, to the recall.

Philips responded by updating instructions and labeling for all affected CPAP and BiPAP machine masks, explicitly warning about possible magnetic interference and listing metallic implants as contraindications. Users with metallic implants are advised to consult their healthcare providers and switch to non-magnetic masks. Providers are cautioned against prescribing magnetic masks to patients in close contact with metallic implants.

Comparative Analysis and Future Implications of Magnetic CPAP Masks

The safety concerns raised by both ResMed and Philips underscore the broader challenges faced by the medical device industry in ensuring the safety and well-being of patients. The reliance on magnets in CPAP masks for user convenience has introduced unforeseen risks, necessitating heightened awareness and stringent precautions. The FDA’s role in evaluating and addressing these safety concerns is pivotal, as demonstrated by its response to both ResMed and Philips recalls. The overlapping issues in the products affected by each recall raise questions about the industry’s overall approach to product safety and the need for comprehensive evaluations of potential risks.


The safety warnings issued by ResMed and Philips regarding magnetic interference with implanted medical devices highlight the evolving landscape of patient safety in the medical device industry. As technological advancements continue to enhance the effectiveness and user-friendliness of medical devices, manufacturers must remain vigilant to emerging risks. The collaborative efforts of manufacturers, regulatory bodies, and healthcare providers are crucial in safeguarding patient health and minimizing the occurrence of adverse events associated with medical devices. The ongoing challenges faced by ResMed and Philips serve as a stark reminder of the importance of ongoing vigilance, transparent communication, and proactive measures to ensure the safety of individuals relying on these critical healthcare devices.

Source 1:,near%20while%20wearing%20the%20masks.
Source 2: