Aortic Valve

Question 1

Severe AS

Answer 1

Peak Velocity: >4.0
Mean Gradient: >40 mmHg
AVA: <1.0 cm2
Dimensionless Index: <0.25

Question 2

Indications for Surgery with Severe AS

Answer 2

1. Symptomatic severe AS
2. Asymptomatic severe AS w/ EF less than 50%.
3. Asymptomatic severe AS undergoing other cardiac surgery.

Question 3

Severe AR

Answer 3

EROA: greater than 0.3
Regurgitant Fraction: greater than 50%
Regurgitant Volume: greater than 60 ml
Vena Contracta: greater than 0.6
PHT: less than 200

Question 4

Indications for Surgery with Severe AR

Answer 4

1. Symptomatic severe AR
2. Asymptomatic severe AR w/EF less than 55%.
3. Asymptomatic severe AR undergoing other cardiac surgery.
4. Asymptomatic severe AR, normal LVEF, w/LVESD greater than 50mm or 25 mm/m2