ECHO...ECho...echo Flashcards
What can echo evaluate?
cardiac dimensions
wall thickness
function of myocardium and valves
stenosis
regurgitation
shunts
What echo view shows you four chambers and the MV/TV/AV valves?
Apical
*used to evaluate chamber size thus myopathies and AV valves
What structures are seen in the left parasternal long axis view?
LA/MV/LV/LVOT
AV/septum/RVOT
What does a subcostal view give a good picture of?
the septum and interatrial septum
What can be evaluated with a short axis left ventricular view?
anterior/posterior papillary muscles of LV
top down view of LV mainly looking at LV cardiomyopathy
What view gives you a top down view of the aortic valve leaflets
Short axis aortic valve
In regards to pressures, when does cardiac tamponade occur?
pericardial fluid pressure > diastolic filing pressures
*compresses lower pressure systems first i.e. right heart > blocks vena cava return = JVD
What side of the heart would emboli come from causing cardioembolic stroke?
Left side
What does M Mode show on echo?
M Mode (motion) shows depth vs time and motion vs time of a focused cardiac path
What does doppler u/s measure?
velocity of blood
What does continuous wave doppler tell us?
Quantifies the total amount of flow. Showing how much blood is flowing in a given time (good for measuring extent of regurg and stenosis)
What does pulse wave (gated) doppler show us?
We can see a small sample volume, meaning a small area across a vessel, even able to measure the flow in the central lumen of vessel (so the center flow of the hose). This can tell us how much blood is flowing just past an obstruction/occlusion i.e. plaque/stenosis
What is a myxoma?
Myxoid tumor of connective tissue usually found in the heart
