Constrictive pericarditis 20 years after surgical aortic valve replacement.
Toshinori NishizawaShosei RoTaku AsanoTomohide TamuraPublished in: Journal of general and family medicine (2021)
Catheterization of the right side of the heart shows an elevated right ventricular pressure, a prominent "y" descent, known as Friedreich's sign, and a dip-and-plateau configuration.