Echo

Question 1

Fixed LVOT obstruction Doppler profile

Answer 1

obstruction last throughout systole => symmetric flow profile

Question 2

Dynamic LVOTO Doppler profile

Answer 2

obstruction increase in severity, highest at the end of systole => dagger shape flow profile
o Systolic anterior motion of the MV
o Normal early LV ejection with a late peak maximal gradient

Question 3

Pressure tracings w/ fixed LVOTO

Answer 3

o AoP: slow rate of increase throughout systole
o LVP: symmetric shape, peak in mid-systole
o Largest PG in early systole

Question 4

Pressure tracings w/ dynamic LVOTO

Answer 4

o AoP: rapid upstroke in early systole → flat
o LVP: maximal pressure at end of systole (highest PG)