News Release 

Blood pressure and hemorrhagic complication risk after renal transplant biopsy

2021 ARRS Virtual Annual Meeting Scientific Electronic Exhibit found no statistically significant threshold for increased renal transplant biopsy risk based on systolic, diastolic, or mean arterial blood pressure alone

American Roentgen Ray Society

Research News

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IMAGE:  "When these metrics are combined, " first author Winston Wang of the Mayo Clinic Arizona cautioned, "the risk of complication is significantly higher when the SBP is ? 180 mm Hg,... view more 

Credit: American Roentgen Ray Society (ARRS)

Leesburg, VA, April 20, 2021--An award-winning Scientific Electronic Exhibit to be presented at the ARRS 2021 Virtual Annual Meeting found no statistically significant threshold for increased renal transplant biopsy risk based on systolic (SBP), diastolic (DBP), or mean arterial (MAP) blood pressure alone.

"When these metrics are combined," first author Winston Wang of the Mayo Clinic Arizona cautioned, "the risk of complication is significantly higher when the SBP is >= 180 mm Hg, DBP is >= 95 mm Hg, and MAP is >= 116 mm Hg."

Wang and team's review of consecutive ultrasound-guided renal transplant biopsies from August 1, 2015 to July 31, 2017 noted recordings of SBP, DBP, and MAP for each patient prior to entering the procedure room. Although no blood pressure threshold to cancel the biopsy was indicated, the development of a major bleeding complication (Common Terminology Classification for Adverse Events grade 3 and above) had been recorded in the electronic medical record.

Of the 1,689 biopsies on 958 patients (547 men, 411 women) meeting the inclusion criteria, only 10 (0.59%) had bleeding complications, and Wang et al. observed no statistically significant difference between biopsies with complication compared to those without complication for SBP (p = 0.351), DBP (p = 0.088), or MAP (p = 0.132).

Acknowledging that previous studies also showed scant correlation between major hemorrhagic complication of renal transplant biopsy and elevated SBP and DBP, compared to normotensive patients, "the data is limited, based on only 4 complications," the authors of this Cum Laude ARRS Annual Meeting Scientific Electronic Exhibit added.

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Founded in 1900, the American Roentgen Ray Society (ARRS) is the first and oldest radiological society in North America, dedicated to the advancement of medicine through the profession of radiology and its allied sciences. An international forum for progress in medical imaging since the discovery of the x-ray, ARRS maintains its mission of improving health through a community committed to advancing knowledge and skills with an annual scientific meeting, monthly publication of the peer-reviewed American Journal of Roentgenology (AJR), quarterly issues of InPractice magazine, AJR Live Webinars and Podcasts, topical symposia, print and online educational materials, as well as awarding scholarships via The Roentgen Fund®.

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