The alpha blockers and the ureteral access sheaths placements

Document Type: Editorial

Authors

1 Department of Urology, Zahedan University of Medical Sciences, Zahedan-Iran

2 Urology Research Center,Tehran University of Medical Sciences

10.22034/au.2020.229122.1019

Abstract

The new technique of laser applications with flexible ureteroscopy and retrograde intrarenal surgery (RIRS) applications has improved a lot over the last years. Several modifications and suggestion are considered for its improvement. One of them id using α-blockers in order to boost in the spon‌taneous passage of ureteral stones led and relaxation and to decrease intramural ureteral resistance in ureteral smooth muscles. It was from 2000 that the combination of laser applications with flexible ureteroscopy and retrograde intrarenal surgery (RIRS) applications has improved a lot. 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 of digital technology as well as increased deflection ability . In spite of huge benefits of RIRS, Ureteral access sheaths (UAS) that is produced in different diameters ranging between 9.5 and 14 Fr and lengths between 13 and 55 cm can bring some difficulty in the ureter and some uneasiness for the patient

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