We assessed the clinical usefulness of Biopty biopsy instrument & Biopty biopsy needle in percutaneous renal biopsy (PRB) compared with Tru-cut disposable needle and Vim-Silvermann needle. Sixty cases, each consisting 20 cases, were performed PRB by 3 different needles. There was no significant differences between Biopt y-cut needle and Tru-cut needle in the length of renal biopsy tissue and number of glomeruli obtained. The frequency of clinical complications such as fever, flank pain and decrease in Ht greater than 2% was lower in Biopty needle group after PRB. The frequency of middle and large size of hematoma was also lower in Biopty needle group after PRB. We could also obtain specimen from transplanted kidney without complications except small hematoma. From three results, Biopty biopsy needle is a useful tool in performing PRB.
Three hundreds percutaneous renal biopsy cases were analyzed for recorded clinical complications retrospectively. Incidence of fever (> or = 37.5 degrees C), pain, and decrease in hematocrit (> or = 4%) was 21%, 28%, and 13% respectively. The incidence of fever and pain were less in the older patients. Prospectively, 125 cases who underwent ultrasonography following renal biopsies and 62 cases who underwent computerized tomography were analyzed. Bigger hematoma was followed by fever 5-7 days after renal biopsies. Incidence of pain and the decrease in hematocrit were correlated with the size of hematoma. Use of the ultrasonographic localization and a Tru-Cut biopsy needle or a Biopty-Cut needle decreased the incidence of hematoma more than 50ml following renal biopsy (0-5%). Incidence of fever and pain was less by these new procedure. The risk of hematoma increased as the biopsy needle went deeper into medulla.
