Intravascular Lesion Physiology and Imaging

Question 1

What are the three major goasl in using intravascular lesion assessment tools?

Answer 1

1: Avoid unnecessary revascularization procedures
2: Improve periprocedural and long term PCI outcomes in CAD
3: Diagnose microvascular dysfunction in patients with symptoms but no CAD

Question 2

What needs adenosine for hyperemic pressure ratio?

Answer 2

-FFR
-cFFR

Question 3

What uses nonhyperemic wire derived pressure ratios?

Answer 3

-Pd/Pa
-RFR
-iFR DFR dPR

Question 4

What inch pressure sensor guide wire is used for FFR?

Answer 4

0.014 in

Question 5

How many cm is the pressure transducer mounted away from the tip of the wire to the radiopaque segments?

Answer 5

3 cm

Question 6

How can pressure across a stenosis be measured using what wire and catheter?

Answer 6

0.014 in pressure sensor wire
5 or 6F guide catheter

Question 7

How far does the pressure wire need to advance across the stenosis?

Answer 7

2cm distal to the coronary lesion

Question 8

How many mcg do you need of adenosine for the RCA for pressure wires?

Answer 8

50-100 mcg

Question 9

How many mcg do you need of adenosine for the LCA for pressure wires?

Answer 9

100-200 mcg

Question 10

When do you need to measure FFR after injecting adenosine? IC and IV

Answer 10

IC: 15-20 seconds
IV: <2 minutes

Question 11

What is adenosine based on?

Answer 11

Weight based
Operator independent