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  • Title: [Glomerular hyperfiltration following unilateral nephrectomy in healthy subjects].
    Author: Bock HA, Gregor M, Huser B, Rist M, Landmann J, Thiel G.
    Journal: Schweiz Med Wochenschr; 1991 Dec 07; 121(49):1833-5. PubMed ID: 1754867.
    Abstract:
    23 living related kidney transplant donors were prospectively studied to determine the degree of hyperfiltration which occurs after uninephrectomy and to monitor potential consequences of this procedure such as hypertension, microalbuminuria or renal functional impairment. Standard inulin and PAH clearance studies were performed immediately before (n = 23), one week after (n = 22) and one year after nephrectomy (n = 12). Hyperfiltration was defined as the ratio of (post-nephrectomy inulin clearance)/(0.5 x pre-nephrectomy inulin clearance), hyperperfusion was defined in an analogous way for PAH clearance. One week after uninephrectomy, hyperfiltration averaged 134 +/- 6% (SEM) and hyperperfusion was 138 +/- 6%. The degree of hyperfiltration did not correlate with donor age. One year after nephrectomy, hyperfiltration was nearly unchanged (130 +/- 7%) whereas hyperperfusion had significantly decreased to 119 +/- 8% (p less than 0.05). Blood pressure did not increase after nephrectomy and no new cases of hypertension were observed during follow-up. In contrast, there were two new cases of microalbuminuria at one week and one year after nephrectomy. Further follow-up of these kidney donors is warranted.
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