Talk to General Physician on Saturation Is Low

my aunty is admitted in shah medical centre and she is covid positive, when she was admitted her saturation was 81, now she is in ICU , all the well known hospitals are occupied, i wanted to ask what is the basic protocol that should be followed and what are the necessary medications need to be given, im very far from her. i want to tell her husband to make sure that proper medications are given to her