Sally is a 32-year-old accountant who has come in to A&E with extremely sharp and severe epigastric pain, which started last night. She also describes feeling nauseous and has vomited twice in the last 12 hours. When you go to speak to her and introduce yourself as her lovely F1 today, you notice that Sally appears to be in pain and is leaning forward in her bed. She has no allergies or PMH of note.
Her observations are as follows:
HR 126 bpm
O2: 96% on room air
There are raised WCC and CRP.
What should be your next step in this scenario?