Mitral Valve

Question 1

Severe MR

Answer 1

EROA: greater than 0.4
Regurgitant Fraction: greater than 50%
Regurgitant Volume: greater than 60 ml
Vena Contracta: greater than 0.8

Question 2

Surgical Indications for Severe MR

Answer 2

1. Symptomatic severe primary MR
2. Asymptomatic severe primary MR, EF less than 60%, LVESD greater than 40
3. Asymptomatic severe primary MR undergoing other cardiac surgery.

Question 3

Severe MS

Answer 3

1. Severe Rheumatic: MVA less than 1.5 cm2, Mean gradient 5-10 mmHg
2. Very Severe Rheumatic: MVA less than 1.0 cm2, Mean gradient greater than 10 mmHg
3. Severe Nonrheumatic: MVA less than 1.0 cm2, Mean gradient greater than 10 mmHg