A detailed technical statement from Philips is available here.
Affected CPAP machines have been fitted with sound abatement foam that can degrade particularly in the context of heat, high humidity or if cleaned using ozone-based cleaners. This can lead to:
- Particulate matter being released. A small number of people have reported small black particles in the airflow outlet or CPAP tubing. These particles can be inhaled and cause symptoms such as cough, wheeze, shortness of breath, sinus infection and headache.
- Exposure due to chemical emissions from affected foam which can result in: headache/dizziness, irritation (eyes, nose, respiratory tract, skin), hypersensitivity, nausea/vomiting, toxic and carcinogenic effects
The potential risks can occur even if particulate matter hasn’t been seen or if people don’t have symptoms, so anyone with an affected device (above) should register their device with Philips so that it can be repaired or replaced and contact their sleep physician to discuss ongoing treatment options.
Philips have also recommended:
- Use of bacterial filters to reduce chance of particulate matter being inhaled from CPAP devices. (Note – although this is recommended these are in short supply and not likely to be available in sufficient quantity for everyone to use. Philips have also not provided information on where to purchase these or who will pay for them.)
- Stop use of ozone-based cleaners for CPAP and ensure device, tubing and mask are cleaned as per manufacturer’s instructions.