Clinical risk factors associated with bleeding after native kidney biopsy.

Purpose: To determine the effect of various risk factors on postbiopsy bleeding (PBB).

Procedure: A retrospective review of 645 native kidney biopsies carried out from 1981 to 2001 was conducted. Data regarding age, gender, race, prebiopsy blood pressure, history of hypertension, pre- and postbiopsy haemoglobin/haematocrit, serum creatinine and blood urea nitrogen (BUN) were collected.