the nitrous oxygen mix can be monitored on the wall units (not the cylinders) providing a lower mix or higher mix depending on a birthing womans needs. It can be used with a mask or mouth piece

the gas when first inhaled starts taking effect 15-30secs and when the last breath is expelled it is removed from your system 30-50secs later

it acts as a light sedative, creating a dissociation with the discomfort being experienced

it is not believed to cross the placental barrier as it is inhaled and does not remain in the maternal system long enough for it to be transferred to the baby

its use promotes oxygen flow to the uterus and baby, and regulates maternal breathing

some women do not like it due to the smell and the nausea this causes, switching to the mouth piece is beneficial in this case

it can be used effectively in the bath and shower, and with a number of other natural and non interventional methods of pain relief

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