This isn’t very difficult. Perhaps convincing the patient to get a CT is difficult, but the rest is easy.
Consult surgery.
“Surgery won’t come until you have a CT”.
Explain politely you understand its unusual, but the patient refuses but is clearly ill and you really need a bedside consultation. Remind them of their obligation under EMTALA and per hospital bylaws, if they continue to refuse. Explain you have explored every other option you could think of (MRI, US), but you’re optimistic the second opinion of an attending surgery might convince the patient.
If they STILL continue to refuse? Page chief of surgery. Page AOD. Page CMO. Remove all emotions from your being and then politely repeat the facts and ask for their help with this unusual but ILL patient. Do NOT discharge the patient.
Consult hospitalist for admission. Same dance routine as above, if they refuse to see the patient.
Now, I fully admit I’ve had some entertaining conversations over the years, usually with sub specialists, about a patient refusing their recommended XYZ and thus them telling the patient they must leave AMA and sign the form. Malarkey. If the patient refuses XYZ (MRI/MRA + heparin drip) but still wants to be in the hospital and be treated, you offer them suboptimal option ABC and chart the hell out of it (Repeat CT in 48hr and oral Plavix).
Similarly, I’ve had patients demand discharge from the hospital AMA on, say, IV abx for a pelvic abscess and have had services sign them AMA out without medication. Horse Manure. You explain your reasoning to them, and explain oral antibiotics are a poor but better option than NOTHING and then you Rx them 14 days of augmentin and let them sign out AMA.
I find that 80% of the time if you remain calm, and let the patient hear the repeated message of our recommendations (from me, from the RN staff, from the consultants) in a non-confrontational manner, they eventually realize people do care about them and go along with the flow.