Ureteral Access Sheath Provides Protection against Elevated Renal Pressures during Routine Flexible Ureteroscopic Stone Manipulation

摘要: Background and Purpose: New-generation flexible ureteroscopes allow the management of proximal ureteral intrarenal pathology with high success rates, including complete removal renal calculi. One problem is that irrigation pressures generated within collecting system can be significantly elevated, as evidenced by pyelovenous pyelolymphatic backflow seen during retrograde pyelography. We sought to determine if access sheath (UAS) offer protection from attained routine ureteroscopic stone surgery. Patients Methods: Five patients (average age 72.6 years) evaluated in emergency department for obstructing calculi underwent percutaneous nephrostomy (PCN) tube placement decompress their systems. The indications PCN were obstructive failure (N = 1), urosepsis 2), obstruction uncontrolled pain elevated white blood cell counts 2). Flexible ureteroscopy was subsequen...