28th August 2020

A 40-year-old male on the general surgical ward has been noted to have decreased urine output

A 40-year-old male on the general surgical ward has been noted to have decreased urine output day one post-colectomy for his Crohn’s disease. He has a catheter in-situ. The nurses have recorded on the fluid balance chart that his urine output decreased from 100mL per hour at 8.00am to 0mL at 9.00am. The patient reports drinking adequate amounts of fluids and has no symptoms of note. His observations were HR 70, BP 120/65, RR 20. Physical examination was unremarkable. 

For the patient above, please select the SINGLE most likely diagnosis. Select ONE option from the list above.