Final answer:
The nurse should prioritize straining the urine in a client with renal calculi.
Step-by-step explanation:
The nurse should give priority to straining the urine in a client admitted with a diagnosis of renal calculi. Renal calculi, also known as kidney stones, can cause severe pain and obstruction of the ureter. Straining the urine allows the nurse to monitor and collect any stones that pass, which can provide important information about the client's condition and guide further treatment decisions.