Abstract
Renal biopsy can be performed in several ways, including using a spring-loaded biopsy gun. As this form of renal biopsy has become more popular, a controversy has developed regarding tissue adequacy and the incidence of complications. To compare these two aspects in an automated biopsy and a manual biopsy, we studied 144 patients - 77 M and 67 F, average age 49±14,5 years assigned to one of the two renal biopsy methods. 21/144patients were children, 9 - boys and 12-gilrs, average age, 10,6±4,5. fom January 2007 until July 2007., group I (67 adults) received a 14 G Tru-cut needle manual biopsy while group II (77 patients) received an automated gun biopsy. 21 children received 18 G needle and 56 adults -16G. Major complication- big intrarenal hematoma which indicated blood transfusion appears in one case in which biopsy was done with MCA 16G (0,69%). The incidence of A-v fistula was low- 2% - 2 cases in group I and 1- in group II, p>0,05. The incidence of postbiopsy hematoma was marginally greater in group I (10% v 5%), p<0.01. Perirenal hematoma was detected in 7,14 % of biopsies made by automated biopsy system(group II). From all biopsies made by Tru cut needle(group I) in 27% of cases intrarenal hematoma was diagnosed which is statistically grater then the complications in the second group, p<0.01. Both techniques rendered adequate tissue sampling, but the extent of bleeding was more severe with the manual 14 G Tru-cut needle biopsy.
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