Ultrasound Video Challenge – Aorta/IVC

We bring you our weekly SonoSim Ultrasound Challenge! Can you give us the correct answer?

This 65-year-old male presented to the ED with progressive shortness of breath and lower extremity edema. An intravascular volume assessment was performed by imaging the IVC with sonography during respiration. What does his ultrasound show, and what can be inferred about this patient’s right atrial pressure?