LV diastolic Function Flashcards
key parameters for measuring LV function
- miral inflow
- TDI
- LA index
- pulmnary venous flow
- TR velocity
- valsalva maneuver
does e wave peak velocity increase or decrease with age
decrease
the E-wave peak velocity represents
the LA-LV pressure gradient
what is the MV E wave peak velocity affected by
change in rate of relaxation and LAP
A wave peak velocity represent
atrial contraction, late diastole LA-LV pressure gradient
does A wave peak velocity increase or decrease with age
increase
the A wave peak velocity is affected by
LA contractility/lv compliance
E/A normal range
1.0-1.5
does E/A ratio increase or decrease with age
decreases
what is the E/A ratio used for
to recognize abnormal filling patterns
normal E decel time
160-240 ms
E decel time increases or decreases with age
increases
E decel time is effected by
LV relaxation, diastolic pressure, and stiffnesss
E/e’ <8 indicates
normal LV filling pressure
E/e’ >14 indicates
increased LV filling pressure
normal LA volume index
16-34 ml
LAVI equation
LAVI=LAV/BSA
(la volume index= la volume/bodysurface area)
pulmonary venous flow s wave peak velocity affected by
LA pressure changes and contractility
pulmonary venous flow D WAVE affected by
early diatolic LV filling/compliance
normally slightly less than S wave
pulmonary venous flow atrial reversal due to
due to Atrial contraction
when LA pressure increases what happens to pulmonary venous flow
s wave decreases and d wave increases
RV systolic pressure equation
4(peak TR velocity)^2 + RAP
is the ivc collapses >50% RA pressure is
3
ivc collapses less than 50% the RA pressure is
15
what maneuver can be used to unmask a pseudonormal E/A ratio
valsalva
Abnormal lateral E/e’ cutoff
> 13
abnormal cutoff septal E/e’
> 15
e’ MV annular velocity abnormal cutoff septal wall
<.7 cm/s or 0.07 m/s
TDI MV e’ velocity lateral wall abnormal cutoff
< 10 cm/s or .10 m/s
peak TR velocity abnormal cutoff
> 2.8 m/s
severe LAE
> 48
mild LAE
35-41
LA volume index equation
LAV/BSA
RVSP/SPAP equation
4(tr)^2 + RAP
Rv diastolic dysfunction primary parameters
Tricuspid inflow
Tdi of tv annulus
Ra volume
Rv e/a <.8 suggest
Impared relaxation
Rv e/a between .8-2.1 suggest
Pseudonormal filling
Normal e-f AMVL normal range
70-150 mm/sec
E point to septal normal range
2-7 mm
D-E excursion normal range
18-28 mm