Aorta and IVC Ultrasound

Caval Index

Inferior Vena Cava – M Mode

sensor position
annotated ultrasound image


So another way to evaluate the IVC in the sagittal plane is with m-mode or motion mode. This can show the collapsibility of the IVC over time, and it’s a nice visual representation in a still image. The x axis is time and in the far field here you can see the IVC which is collapsing and then distending depending on whether the patient is sniffing in or not.

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