What are you thinking?
What life threatening features do you need to identify?
What are the possible causes of hypotension and oliguria here?
How do you approach this problem?
First impression - "sick" or not sick?
Assess ABC
Check vital signs including temperature, BSL, GCS and pupils
Treat life-threatening abnormalities
Systematic examination and routine / focused investigations
Review the notes, the "SAGO" chart and the drug chart