These machines to help people breathe were recalled a year ago. Many still use them

In Rochester, New York, Diane Coleman has relied on a machine to help her stay alive, but she worries that it might be slowly undermining her health.

Her ventilator was among millions of breathing devices that Philips Respironics recalled last summer over safety concerns about numerous models of its ventilators, BiPAP and CPAP machines.

The reason: Polyester-based polyurethane foam used to muffle noise in those machines could degrade, giving off chemical gases and bits of black debris that could be swallowed or inhaled.

The possible risks: headaches, dizziness, nausea, irritated eyes and airways, and “toxic or cancer-causing effects,” according to federal regulators. The Food and Drug Administration put the recall in its most serious category, involving “a reasonable probability” that a product “will cause serious adverse health consequences or death.”

Yet a year later, many patients are still awaiting replacements — and some are using the recalled machines despite those possible risks.

Coleman said her machine underwent some initial repairs, but she is seeking a new one after federal regulators sought more safety testing of the replacement foam used for such fixes. The 68-year-old, who is president and chief executive of the disability rights group Not Dead Yet, has a form of muscular dystrophy and uses her ventilator roughly 22 hours each