Introduction: E.C.I.R.S. is currently used in Galdakao-modified supine Valdivia position, since it is thought to be capable of allowing the retrograde approach to the high urinary diseases. Our school developed some good experience in percutaneous procedures in the prone position, with no significant anesthetic complications; we have performed an evaluation of flexible retrograde endoscopy with percutaneous nephrolithotripsy in this position.
Materials And Methods: 21 patients (14 M - 7 F), with a mean age 44.5 years (range 27-62), with complex urolithiasis, underwent percutaneous nephrolithotripsy associated with flexible retrograde endoscopy (E.C.I.R.S.) in the prone position. The technique has followed these steps: patient's positioning in the prone position; flexible cystoscopy and insertion of guide 0.038" stiff Lubriglide flexible tip; ureteral sheath 11/13 Ch until the lumbar ureter; fixing the end of the sheath to the surgical drape with sutures or surgical instrument; catheter Nelaton transurethral 10 Ch to the side of the sheath; renal puncture and routine procedure for the nephrolithotripsy assisted by the flexible instrumentation by retrograde approach. The procedure ended with the application of a Re-entry Malecot nephrostomy tube (Boston Scientific).
Results: The ureteral sheath was easily applicable in the prone position for all patients, with no difference between males and females; its presence made it easier to enter and the progression of the flexible instrument by retrograde approach. Idem come sopra. There was no lengthening of operative time associated with retrograde instrumentation. The "stone free" status was obtained in 100% of cases. There were no complications.
Discussion: The stabilized ureteral sheath allows for the comfortable and secure combined endorenal prone procedure, with flexible instruments both in men and women, through a safe and effective technique.
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