Eustachian Valve on POCUS Echocardiogram = A4c What the Heck is in the Right Atrium? Eustachian Valve! Rudimentary valve (embryologic remnant) of the IVC. - VCU Ultrasound @ultrasound_vcu #Eustachian #Valve #POCUS #Echocardiogram #A4c #clinical #cardiology