The provider performs cystourethroscopy, the inspection of the interior of the bladder, the urethra, prostatic urethra, and ureteric openings using a cystoscope passed through the urethra and into the bladder, and inserts a guidewire through the ureter to create a percutaneous retrograde nephrostomy, an artificial pathway between the kidney and outside of the body to allow drainage of urine or stone removal from the renal pelvis.
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