When does lithotripsy require a stent?

Ureteral stents may be used in addition to lithotripsy to aid in the passage of stone fragments. Typically, stents are inserted after lithotripsy if:

- The stone fragments are too large to pass through the ureter on their own.

- The ureter is narrow or has a stricture that could obstruct the passage of stone fragments.

- The patient has a history of ureteral injury or obstruction.

- The patient is experiencing severe pain or discomfort from the stone fragments.