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March 11, 1968

A Disposable Renal Biopsy Needle

JAMA. 1968;203(11):988-989. doi:10.1001/jama.1968.03140110080025

To the Editor:—  Since its introduction 16 years ago,1 percutaneous biopsy of the kidney has come to play an integral part in diagnosing and managing renal disease. The Franklin modification of the Vim-Silverman biopsy needle2 has been used almost exclusively in this country, with safety and success. The purpose of this report is to record our experience with a new, simple, single-piece, disposable needle.Patients were selected for renal biopsy according to the usual criteria.3 Most frequently, biopsies were performed on patients with unexplained proteinuria. Bleeding, clotting, and prothrombin times were determined, and informed consent obtained. After typing and cross-matching for 2 units of blood, patients were routinely premedicated with 64 mg of phenobarbital. The biopsy site was determined by transferring landmarks from the intravenous pyelogram. With sterile technique, the area was infiltrated to the renal capsule with 1% lidocaine, and the kidney located with a 0.5-mm