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Two-step treatment model for the adult patients with an obstructed kidney functioning below 10% of its capacity: a pilot study
Background There is no written consensus as to when and in what conditions simple nephrectomy should be performed for hypo-functioning obstructed kidneys. We aimed to assess renal function and the requirement of nephrectomy in patients that underwent percutaneous nephrostomy (PCN) despite being indi...
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Published in: | Clinical and experimental nephrology 2020-02, Vol.24 (2), p.185-189 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Background
There is no written consensus as to when and in what conditions simple nephrectomy should be performed for hypo-functioning obstructed kidneys. We aimed to assess renal function and the requirement of nephrectomy in patients that underwent percutaneous nephrostomy (PCN) despite being indicated for nephrectomy due to a split renal function of less than 10% caused by ureteral obstruction.
Methods
This prospective study includes 18 patients with unilateral upper urinary tract obstruction and renal parenchymal loss on Technetium-99 m dimercaptosuccinic acid (DMSA) scintigraphy. Each patient underwent DMSA scan (DMSA-1) prior to PCN. After a 2-week follow-up period, a second DMSA scan was performed to assess renal function of each kidney (DMSA-2). Nephrectomy was performed in the kidneys functioning below 10% of their capacity, whereas kidneys functioning above 10% of their capacity were treated as appropriate to their etiologies. Renal functions and DMSA results were compared before and after nephrostomy with Paired-samples
t
-test and one-way ANOVA.
Results
Following nephrostomy, 8 (44.4%) patients had a kidney functioning above 10% of its capacity on DMSA scan and received etiology-based treatment. Glomerular filtration rates of these patients also improved significantly. A total of 9 patients who did not improve renal functions underwent nephrectomy.
Conclusion
The results indicated that in obstructed kidneys functioning below 10% of their capacity, renal function can be recovered by using a diversion technique (such as PCN) that could alleviate the pressure within the renal pelvis and kidney parenchyma, instead of directly performing simple nephrectomy. |
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ISSN: | 1342-1751 1437-7799 |
DOI: | 10.1007/s10157-019-01801-x |