Gedeeltelijk succesvolle bijniervenesampling bij subtypering van primair aldosteronisme

BACKGROUND:Adrenal vein (AV) sampling (AVS) is used to guide therapy in primary aldosteronism (PA). When a single AV is successfully cannulated, the relative aldosterone secretion index (RASI), which compares the aldosterone/cortisol ratio in that AV versus the periphery, has been proposed as sufficient for PA subtyping, particularly when <1. Data on RASI reliability have, however, been inconsistent.METHODS:This retrospective cohort study included patients with PA who underwent AVS before and after cosyntropin stimulation at a referral center between January 2015 and December 2024. To simulate partially successful AVS, RASI was calculated from patients with successful bilateral AV cannulation and compared across PA subtypes and postoperative outcomes, with assessment of distributional overlap.RESULTS:Of 460 patients (mean age 53±12 years; 58% men), bilateral AVS was successful in 437 patients at baseline and in all patients after cosyntropin stimulation. Without cosyntropin, 98%