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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