continuous flow systems For general purposes in areas with ready access to emergency medical services, an emergency oxygen supply of 40 to 50 minutes to normal true An AED. positive pressure resuscitator systems _ work much like a scuba regulator, supplying 100% oxygen when the diver inhales non-resuscitator demand valve systems The emergency oxygen system suitable for use by PADI Rescue Divers include -nonresuscitator demand valve systems It's important to have emergency oxygen available because prompt oxygen first aid can make a difference in the case of decompression sickness, lung over-expansion injury or drowning True The three primary types of emergency oxygen systems include -non-resuscitator demand valve systems
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