Sickle cell crisis - Nclex world

I think if a cause for sickle cell crisis is identified then that underlying cause vl be corrected..if not giving 100% O2 is priority bcoz major cause is due to O2 depletion...i do not if dis is right or wrong., but i read like dis sumwhere..

Some friend had a HESI test, had a question of sicle cell, she said the answer was pain first. I don't now if this is right, because what I learn was HOPS