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Updated: Jun 17, 2025

Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
Published on: March 15, 2022
Transmitral Gradient Assessment Using a Radial Coronary Catheter and Pressure Wire: The First Clinical Report
Eric S Rothstein1, Augustin J DeLago1, Amit P Amin1
1Dartmouth-Hitchcock Medical Center Heart and Vascular Center, Geisel School of Medicine, Lebanon, New Hampshire.
Abstract:
•Single radial artery access for direct transmitral gradient measurement is feasible•A radial TIG coronary catheter can be advanced retrograde into the left atrium•A coronary pressure wire is delivered to the left atrium and left in place•The catheter is subsequently withdrawn into the left ventricle•This permits simultaneous left atrial and left ventricular hemodynamic assessment.
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