How start Diabetes treatment step by step with Antidiabetics drug???

47/female known hypothyroid came with seizures; interpret abg

20/female post cervicovertebral dysplasia had breathing difficulty; interpret abg findings

63/male came with left sided chest pain; interpret cxr findings; differential

58/female recently diagnosed multiple myeloma on chemotherapy came with breathing difficulty ; interpret cxr

56 yr old lady with no h/o DM, HTN came to OPD complaining of chest pain and ghabrahat off'n' since 1 month. BP was 180/90. Rest normal. What is the line of management.