title: Use of the Amplatz introducer sheath to facilitate ureteral stent placement.
abstract: In eight patients, 7-French double pigtail stents could not be passed through tight ureteric strictures. Coaxial placement using a 10F sheath from an Amplatz nephrolithotomy set allowed the stent to be passed through the sheath.
mesh_terms: D006801:Humans; D014517:Ureteral Obstruction / Q000628:therapy*; D014546:Urinary Catheterization / Q000295:instrumentation* / Q000379:methods