Percutaneous renal stones extraction using suction through the nephroscope
- uploaded: Dec 12, 2011
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Institution:Department of Urology, Military Hospital Moulay Ismail, MÃ©knes, Morocco.
Objectives: we present a video of a suction technique used during percutaneous renal surgery, for extraction of small stones, debris, or clots.
Materiel and methods: The nephroscope is used as a suction device by adapting the suction tube to the nephroscope operating channel. In the meantime, the irrigation tube is permuted from the irrigation channel to the drainage one. The vacuum technique is a sequence of 2 stages. It begins with a short phase of suction. Then the suction is stopped by closing the suction tube, to allow the expansion of the renal cavities. Simultaneously, the nephroscope is moved around in the renal cavities like a vacuum cleaner. The stone fragments are swiftly aspirated through the working channel of the nephroscope under direct vision.
Results: this technique is used with the first introduction of the nephroscope to remove blood clots, pus, and troubled urine in order to have a good visibility. Different fragments size can be extracted with the vacuuming technique. The smaller ones, up to 5 mm, are evacuated through the nephroscope working channel and recuperated in the aspiration container. Larger fragments, which can pass through the Amplatz sheath, can be dragged outside following the nephroscope using continuous aspiration. It is used, combined to aggressive nephroscopy, at the end of the PCNL procedure by doing a systematic sweeping of all the reachable pelvicalyceal system with rigid nephroscope, to remove all the clots, sand debris, and dust. This vacuuming method is the technique of choice for removing matrix stones.
Conclusion: This technique provides the greatest chances to have a â€œstone freeâ€ status, from even the fine sand debris.
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