Comparison of C-arm computed tomography and on-site quick cortisol assay for adrenal venous sampling: A retrospective study of 178 patients
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To compare the performance of on-site quick cortisol assay (QCA) and C-arm computed tomography (CT) assistance on adrenal venous sampling (AVS) without adrenocorticotropic hormone stimulation.
The institutional review board at our hospital approved this retrospective study, which included 178 consecutive patients with primary aldosteronism. During AVS, we used C-arm CT to confirm right adrenal cannulation between May 2012 and June 2015 (n = 100) and QCA for bilateral adrenal cannulation between July 2015 and September 2016 (n = 78). Successful AVS required a selectivity index (cortisoladrenal vein/cortisolperipheral) of ≥ 2.0 bilaterally.
The overall success rate of C-arm CT-assisted AVS was 87%, which increased to 97.4% under QCA (P = .013). The procedure time (C-arm CT, 49.5 ± 21.3 min; QCA, 37.5 ± 15.6 min; P < .001) and radiation dose (C-arm CT, 673.9 ± 613.8 mGy; QCA, 346.4 ± 387.8 mGy; P < .001) were also improved. The resampling rate was 16% and 21.8% for C-arm CT and QCA, respectively. The initial success rate of the performing radiologist remained stable during the study period (C-arm CT 75%; QCA, 82.1%, P = .259).
QCA might be superior to C-arm CT for improving the performance of AVS.
• Adrenal venous sampling (AVS) is a technically challenging procedure.
• C-arm CT and quick cortisol assay (QCA) are efficient for assisting AVS.
• QCA might outperform C-arm CT in enhancing AVS performance.
KeywordsAdrenal glands/blood supply Catheterisation/methods Hyperaldosteronism/diagnosis Phlebography Humans
Adrenal venous sampling
Intraprocedural cortisol assay
Quick cortisol assay
Compliance with ethical standards
The scientific guarantor of this publication is Kao-Lang Liu.
Conflict of interest
The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
This study has received funding by the Taiwan Ministry of Science and Technology (MOST 105-2314-B-002-092).
Statistics and biometry
No complex statistical methods were necessary for this paper.
Written informed consent was waived by the Institutional Review Board.
Institutional Review Board approval was obtained.
Study subjects or cohorts overlap
Some study subjects or cohorts have been previously reported in: Lee et al.: Evaluation of right adrenal vein anatomy by Dyna computed tomography in patients with primary aldosteronism. Sci Rep. 2016;6:28305. Chang et al.: Non-stimulated adrenal venous sampling using Dyna computed tomography in patients with primary aldosteronism. Sci Rep. 2016;6:37143.
• performed at one institution
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