Adrenal venous sampling in primary hyperaldosteronism: correlation of hormone indices and collimated C-arm CT findings.

While it has been questioned whether sequential catheterization in blood sampling without cosyntropin stimulation might cause artificial gradients due to the pulsatile nature of both cortisol and aldosterone secretion, the usual gap between both cannulations at our center lay between 5 and 10 min due to the experience of the IR and hence might not be significant.

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