Subcostal Imaging Flashcards
At what point on the ECG is the RV free wall measured?
R wave and in line with the tip anterior TV leaflet
What are assessing for in the IAS in subcostal view?
ASD
PFO
Seeing IVC collapse less than 50% indicates what?
Increased RA pressure
What is the RAP if the IVC measures greater than 2.1 and collapses more than 50%?
8mmHg
What is the RAP when the IVC measures greater than 2.1 and IV collapses less than 50%
15mmHg
What is the RAP when the IVC is less than 2.1cm and collapses more than 50%?
3mmg
What is a normal IVC measurement?
< or equal to 2.1cm
What direction would you angle the probe from the IVC to visualize the HV?
Lateral
How do you obtain SSAX from IVC/Hepatic view
Angle probe laterally
What color will flow be going from the IVC to RA in bicaval view?
Blue
What color will flow be going from SVC to RA in bicaval view?
Red
How to obtain situs image from subcostal 4 chamber?
Angle very inferior
What is situs solitus?
Normal orientation where the liver is most on the R and the AO is to the left of the spine
What is situs inversus?
Inversed where liver is mostly on the left and the AO is to the R of the spine
What is situs ambiguous?
Positioning of vessels and liver can’t be reliably determined
What is the normal measurement of the free wall of the RV that is measured at the peak of the “R” wave with an open TV leaflet? (see slide 6)
<5mm
Taking a breath in while visualizing the IVC will do what?
Collapse due to a decrease in intra-thoracic pressure in the chest
What colour should flow be going from IVC/HV to RA in subcostal view?
Blue - away from probe into the RA
What view in subcostal short axis is not always possible to achieve?
Apex
How to obtain bicaval view from IVC/HV?
Move to the patients R and cephalad
