| Modified technique for difficult ureteral stenting in percutaneous nephrolithotomy via inferior calyx approach. | |
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MedLine Citation:
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PMID: 20642389 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Percutaneous nephrolithotomy (PCNL) via single inferior-calyceal tract is suitable for some partial staghorn calculi mainly located in the inferior calyx. A ureteral stent should be inserted at the end of PCNL to avoid urine leakage or ureteral obstruction by residual calculi. However, antegrade ureteral stenting via the inferior calyx is not always successful due to unfavorable lower pole calyx anatomy. In the present study, we introduced a modified method for difficult stenting. First a 0.038-inch zebra guidewire was retrogradely introduced through the previously inserted ureteral catheter and grasped out of the work sheath by a ureteroscopic forceps to develop a through-and-through guidewire; then an 8 Fr guide catheter was inserted antegradely over the guidewire into the ureter after removing the prior ureteral catheter; subsequently the zebra guidewire was removed and antegradely introduced into the bladder through the guide catheter, followed by antegrade insertion of a double J stent. Of 158 patients, 32 needed modified ureteral stenting; and the lower pole infundibulopelvic angle (LPIA) was measured in 25 patients with and in 57 patients without modified stenting. The results showed that LPIA in patients with modified stenting was much smaller than that in patients without modified stenting (56.0 +/- 12.58 and 77.4 +/- 11.40, P < 0.0001); when the LPIA is <60( degrees ), the modified technique should be recommended. In summary, the modified technique is simple, time-saving, less invasive and highly successful for difficult ureteral stenting in PCNL via inferior calyx. |
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Authors:
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Tie Zhou; Xiaofeng Gao; Yonghan Peng; Jinyi Li; Guanghua Chen; Yinghao Sun |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Minimally invasive therapy & allied technologies : MITAT : official journal of the Society for Minimally Invasive Therapy Volume: 19 ISSN: 1365-2931 ISO Abbreviation: Minim Invasive Ther Allied Technol Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-20 Completed Date: 2011-01-06 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9612996 Medline TA: Minim Invasive Ther Allied Technol Country: England |
Other Details:
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Languages: eng Pagination: 237-40 Citation Subset: IM |
Affiliation:
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Department of Urology, Changhai Hospital, The Second Military Medical University, Shanghai, PR China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Female Humans Kidney Calculi / surgery* Male Middle Aged Nephrostomy, Percutaneous / instrumentation, methods* Retrospective Studies Stents* Ureter / surgery* Ureteral Calculi / surgery* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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