▁ ▁If ▁a ▁decom pression ▁chamber ▁is ▁available , ▁omitted ▁decom pression ▁may ▁be ▁managed ▁by ▁chamber ▁recom pression ▁to ▁an ▁appropriate ▁pressure , ▁and ▁decom pression ▁following ▁either ▁a ▁surface ▁decom pression ▁schedule ▁or ▁a ▁treatment ▁table . ▁If ▁the ▁diver ▁develop s ▁sympt oms ▁in ▁the ▁chamber , ▁treatment ▁can ▁be ▁started ▁without ▁further ▁delay . ▁ ▁Acc eler ated ▁decom pression ▁ ▁De com pression ▁can ▁be ▁acceler ated ▁by ▁the ▁use ▁of ▁breath ing ▁g ases ▁during ▁as cent ▁with ▁lower ed ▁in ert ▁gas ▁fra ctions ▁( as ▁a ▁result ▁of ▁increased ▁o xygen ▁fraction ). ▁This ▁will ▁result ▁in ▁a ▁greater ▁diffusion ▁gradient ▁for ▁a ▁given ▁ambient ▁pressure , ▁and ▁consequ ently ▁acceler ated ▁decom pression ▁for ▁a ▁relatively ▁low ▁risk ▁of ▁b ubble ▁formation . ▁N it ro x ▁mi xt ures ▁and ▁o xygen ▁are ▁the ▁most ▁commonly ▁used ▁g ases ▁for ▁this ▁purpose , ▁but ▁o xygen ▁rich ▁trim ix ▁bl ends ▁can ▁also ▁be ▁used ▁after ▁a ▁trim ix ▁d ive , ▁and ▁o xygen ▁rich ▁hel io x ▁bl ends ▁after ▁a ▁hel io x ▁d ive , ▁and ▁these ▁may ▁reduce ▁risk ▁of ▁is obar ic ▁counter diff usion ▁comp lications . ▁Do o lette ▁and ▁Mitchell ▁showed ▁that ▁when ▁a ▁switch ▁is ▁made ▁to ▁a ▁gas ▁with ▁a ▁different ▁proportion ▁of ▁in ert ▁gas ▁components , ▁it ▁is ▁possible ▁for ▁an ▁in ert ▁component ▁previously ▁absent , ▁or ▁present ▁as ▁a ▁lower ▁fraction , ▁to ▁in - gas ▁faster ▁than