Inferior Petrosal Sinus Sampling

Indications

Procedure

Inferior petrosal sinuses are catheterized bilaterally. Simultaneous samples for ACTH are obtained from each petrosal sinus and peripherally. Samples are drawn at baseline then 3, 5, and 10 minutes after intravenous CRH or ddAVP administration.

Interpretation

Results can be visualized and reported beautifully using this spreadsheet, courtesy of Dr. Robyn Pugash.

References