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Flashcards in Tools of the Trade Deck (9)
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1
Q

What does reversible perfusion imply?

A

ischemia due to increased demand (work ischemia)

2
Q

What does fixed perfusion imply?

A

ischemia due to infarctions, scars

3
Q

What are micro-bubbles used for?

A

they’re agitated saline that can show intra-septal defects or shunts- allow visualization of blood flow w/I the heart chambers

4
Q

What do radionucleotide perfusion studies look for?

A

imbalances btw supply and demand via decreased perfusion; compare at rest to exercise

5
Q

What are the radionucleotide perfusion imaging agents?

A
  1. Thallium 204

2. Technetium-99m-Sestamibi (Cardiolite)

6
Q

What does stress echo look for?

A

imbalance btw supply and demand bc of a wall motion abnormality; compare rest to exercise

7
Q

Normally the left ventricle should _____ and ____ with exercise or dobutamine

A

beat faster; thicken more

8
Q

Normally the left ventricle should beat faster and thicken more with exercise or _______.

A

dobutamine

9
Q

What does a cardiac cath/coronary angiography measure?

A
  1. pressure
  2. gradients
  3. saturation
  4. intracardiac shunt