This article discusses the FDA's Class I recall of certain Philips Respironics DreamStation1 CPAP machines due to incorrect or duplicate serial numbers during initial programming. Inhaling the foam from the recalled CPAP machines can cause serious injury or death, and Philips is offering a free replacement device to customers affected by the recall. The FDA is urging healthcare providers and patients to be aware of the recall and to report any adverse events or side effects related to the use of the recalled devices.