What does reversible perfusion imply?
ischemia due to increased demand (work ischemia)
What does fixed perfusion imply?
ischemia due to infarctions, scars
What are micro-bubbles used for?
they’re agitated saline that can show intra-septal defects or shunts- allow visualization of blood flow w/I the heart chambers
What do radionucleotide perfusion studies look for?
imbalances btw supply and demand via decreased perfusion; compare at rest to exercise
What are the radionucleotide perfusion imaging agents?
- Thallium 204
2. Technetium-99m-Sestamibi (Cardiolite)
What does stress echo look for?
imbalance btw supply and demand bc of a wall motion abnormality; compare rest to exercise
Normally the left ventricle should _____ and ____ with exercise or dobutamine
beat faster; thicken more
Normally the left ventricle should beat faster and thicken more with exercise or _______.
What does a cardiac cath/coronary angiography measure?
- intracardiac shunt