%0 Journal Article %T The Alpha Blockers and the Ureteral Access Sheaths Placements %J Translational Research in Urology %I Urology Research Center, Tehran University of Medical Sciences %Z 2717-042X %A Narouie, Behzad %A Khatami, Fatemeh %D 2019 %\ 11/13/2019 %V 1 %N 2 %P 58-60 %! The Alpha Blockers and the Ureteral Access Sheaths Placements %K Retrograde Intrarenal Surgery %K Alpha Blockers %K ureteral access sheaths %R 10.22034/au.2020.229122.1019 %X The new technique of laser applications with flexible ureteroscopy and retrograde intrarenal surgery (RIRS) applications has improved significantly over the last few years. Nowadays, it is possible to effectively accomplish RIRS operations on upper urinary system stones by using devices that yield high-quality images due to developments in digital technology and increased deflection ability. Several modifications and suggestions are considered for its improvement. One of them is using α-blockers to boost the spontaneous passage of ureteral stones led and relaxation and to decrease intramural ureteral resistance in ureteral smooth muscles.  %U http://www.transresurology.com/article_108114_ecfcfa1dc1a7405db5f04cd2b19ac800.pdf