WHAT’S KNOW?
Parallel to the improvements in technology during
past decades retrograde intrarenal surgery (RIRS) has become an
efficient and safe option in the management of urinary system stone
disease with a gradually increasing popularity. Ureteral access sheath
(UAS) decreases intrapelvic pressure, helps with access for multiple
instruments, and facilitates drainage and removal of the fragmented
stones. Therefore UAS placement is a crucial step of RIRS. Although it
has several advantages, UAS also remains a controversial tool in
endourology due to the increased risk of ureteral injury.