26th June 2023

A 27-year-old female is admitted with a 3-day history of severe flank pain and dysuria.

A 27-year-old female is admitted with a 3-day history of severe flank pain and dysuria. On admission, she is pyrexial with rigors, tachycardic and hypotensive. She has not passed urine for the last 2 hours and is in significant discomfort. She mentions that she has been noticing blood in her urine.

Bladder scan: 250ml of urine

What treatment is the most important to initiate next?

Select the SINGLE most appropriate option from the list below. Select ONE option only.