Comparison of sequential versus simultaneous methods of adrenal venous sampling

Area of Science:

• Endocrinology
• Interventional Radiology

Background:

• Primary hyperaldosteronism requires accurate preoperative localization of adrenal lesions.
• Adrenal venous sampling (AVS) is crucial for differentiating unilateral from bilateral disease.

Purpose of the Study:

• To compare the efficacy of simultaneous bilateral versus sequential catheterization methods for adrenal venous sampling (AVS).
• To evaluate the diagnostic yield and reliability of two AVS techniques in patients with primary hyperaldosteronism.

Main Methods:

• Twenty-two adrenal venous sampling procedures were performed on 21 patients with primary hyperaldosteronism.
• Methods included simultaneous bilateral catheterization and sequential catheterization, both with adrenocorticotropic hormone (ACTH) stimulation.
• Data analyzed included sampling intervals, hormone ratios, and diagnostic outcomes compared to surgical pathology.

Main Results:

• Selective AVS success rate was 95%.
• Sequential AVS demonstrated 100% accuracy in localizing unilateral disease, while simultaneous AVS had 88% accuracy.
• Baseline prestimulation sampling provided no unique diagnostic information and was confounding in 27% of simultaneous procedures.

Conclusions:

• Sequential bilateral adrenal venous sampling is a reliable method for localizing adrenal lesions in primary hyperaldosteronism.
• Simultaneous AVS is adequate, but baseline prestimulation sampling is unnecessary and increases procedural costs.