US Volume Assessment

IVC measurement is a great, evidence-based way of deciding how much fluid to give a patient

• True

• False

Where should you measure the IVC?

• ~1cm distal to the hepatic vein

• ~2cm distal to its junction with the RA

• ~3cm distal to the diaphragm

• We have no idea

Collapsibility Index is calculated by:

• Min Diameter - Max Diameter / Min Diameter

• Max Diameter - Min Diameter/ Max Diameter

• Max Diameter - Min Diameter / Min Diameter

• Huh?!

IVC diameter and collapsibility index are well matched to RA pressures

• True

• False

The IVC is large and non-collapsing. What might be going on? (Select all that apply)

• The patient is fluid overloaded and I should avoid giving fluid

• The patient may be on positive pressure ventilation

• The patient may have a massive PE

• The patient may have acute severe asthma

The IVC is collapsing. Which of the following are true?

• I might expect this during inspiration in a patient who is being ventilated with positive pressure

• The patient is dry and I should give a litre of fluid

• The evidence shows that it is safe to give fluid in this situation.

• I might expect this during inspiration in a patient who is spontaneously breathing.