ArticleJournal of nephrology2025
Tangential biopsy angle and needle depth for adequacy and safety outcomes in ultrasound-guided native kidney biopsy-a single-center experience in a high-risk population.
Article in Journal of nephrology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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Authors and funding
6 authors.
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Abstract
backgroundKidney biopsy is crucial for diagnosing kidney diseases but involves risks, notably bleeding, which must be balanced with diagnostic precision. This study examines the effect of the biopsy needle's cortical tangential angle and depth on specimen adequacy and safety outcomes.
methodsThis single-center, retrospective study reviewed electronic medical records from kidney biopsies performed between January 1, 2016 and December 31, 2020. Included were patients undergoing real-time ultrasound-guided percutaneous kidney biopsies. Exclusion criteria were pediatric patients, renal mass or transplant biopsies, and cases with incomplete records. Primary variables included biopsy needle cortical tangential angle and depth. Outcomes were tissue adequacy and safety, with complications assessed within 24 h.
resultsOut of 443 biopsies performed, 124 met the inclusion criteria. Our patient population had a mean BMI of 27.17 kg/m
conclusionsThe optimal needle angle for kidney biopsies is 30°-60° for the highest diagnostic yield compared to angles < 30° or > 60°. Our study did not reveal statistically significant differences in major complications between these angle ranges. This greater understanding of the relationship between biopsy angle, needle trajectory depth, and diagnostic and safety outcomes offers valuable insights for optimizing kidney biopsy procedures.
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