Final answer:
The surgeon will use normal saline to irrigate the renal fossa before closing to check for bleeding.
Step-by-step explanation:
The surgeon will use normal saline to irrigate the renal fossa before closing to check for bleeding.
Normal saline is an isotonic solution commonly used in medicine for various purposes, including wound irrigation. It has the same concentration of salt as the body's cells, making it compatible and safe to use. Other options mentioned, such as Ringer's lactate, Betadine solution, and Hartmann's solution, are not typically used for irrigation purposes in the renal fossa.