Philips respironics remstar a-flex shuts off in use without warning, beeps or alerts while consumer is already asleep.Causing blocked breathing as no air pressure is being exerted.Also non sufficient or mechanical back up to allow consumer to breathe when machine is malfunctioning.Basically, consumer wakes up usually due to hypoxia or inability to breathe.Which is what the cpap is designed to correct.This malfunction has happened several times and always after the machine begins to provide air pressure and consumer falls asleep.
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