echocardiographic evaluation of diastolic...
TRANSCRIPT
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Echocardiographic Evaluation of
Diastolic Function
Miguel A. Quiñones, MD, MACC, FASEHouston Methodist
DeBakey Heart & Vascular Center
Disclosure: nothing to disclose
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Practical Approach to Grade Diastolic Dysfunction
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Diastolic Function
SYSTOLIC
HEART FAILURE
DIASTOLIC
HEART FAILURE
High Filling Pressures
2ary to abnormal diastolic function
Cardiac Dyspnea
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Determinants of Diastolic Function
Stiffness
Filling Pressures
Relaxation
Atrial Contraction
Inflow Volume
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P
V
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Rx P
V
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Echocardiographic Evaluation of
Diastolic Function
Filling PressuresRelaxation
Assess
Normal Normal
Impaired Elevated
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How To Assess Diastolic Function?
1. Clinical Sx’s and age
2. 2D echo findings
a. LV size; EF; RMWA
b. LVH
c. LA size
3. Doppler findings
a. transmitral velocity; IVRT; PV vel
b. Lat and sep e’
c. TR vel->PASP
What do I use?
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MITRAL
PULMONARY
VEIN
EA
A
SD
IVRT
Sweep speed at 100mm/s
Transmitral and Pulmonary Vein Velocities
Doppler Assessment of Diastolic Function
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Myocardial (or annular) Velocity by Tissue Doppler
Septal Lateral
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Spectral Tissue Doppler
Technical Issues
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RELAXATION SYSTOLIC HF
IVRT IVRT
E
A
Systolic Heart Failure
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MIFMIF
Impaired LV relaxation Yes Yes Yes Yes
Increased LV stiffness 0-+ ++ +++ ++++
Elevated atrial pressure 0 ++ +++ ++++
Impaired LV relaxation Yes Yes Yes Yes
Increased LV stiffness 0-+ ++ +++ ++++
Elevated atrial pressure 0 ++ +++ ++++
MIF-ValMIF-Val
DTIDTI
PVPV
EE
AA
EE
AA
eeaa
DDSS
ARAR
ARdurARdur
AdurAdur
Normal DFNormal DF Mild DDMild DD Moderate DDModerate DD Severe DDSevere DDImpaired
relaxation
Impaired relaxation
PseudonormalPseudonormal RestrictiveRestrictive Fixed restrictiveFixed restrictive
Type 1 Type 2 Type 3
Diastolic Dysfunction
When is Type 1 abnormal versus
due to old age?
Lat e’<10
Sep e’ <8
E/A<1
What about age > 80?
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Septal e’ ≥ 8
Lateral e’ ≥ 10
LA < 34 ml/m2
Septal e’ < 8
Lateral e’ < 10
LA ≥ 34 ml/m2
Grade I
Septal e’ ≥ 8
Lateral e’ ≥ 10
LA ≥ 34 ml/m2
Grade II
Normal function,
Athlete’s heart, or
constriction
Normal.
function Grade III
E/A 0.8-1.5
DT 160-200 ms
Av. E/e’ 9-12
Ar-A ≥ 30 ms
Val E/A ≥ 0.5
E/A ≥ 2
DT < 160 ms
Av. E/e’ ≥ 13
Ar-A ≥ 30 ms
Val E/A ≥ 0.5
Septal or Lat e’
LA volume
E/A < 0.8
DT > 200 ms
Av. E/e’ 8
Ar-A < 0 ms
Val E/A < 0.5
Practical Approach to Grade Diastolic Dysfunction
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• Normal LV structure and EF
• Normal regional wall motion
• Transmitral E ≥ A
• Normal e’ adjusted for age
• Normal LA volume
Findings universally associated with normal LV relaxation*
*All must be present to ensure
normal LV relaxation
-Exception: LA may be enlarged in:
Primary MV disease (MR or MS)
Athletes
High CO states
Atrial fibrillation
Is LV relaxation normal or impaired?
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Normal Heart
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• Low EF
• Abnormal Regional WM
• Concentric LVH
– Exception: athletes
• Enlarged LA: found in >90% of patients with diastolic dysfunction
– Sensitive but not specific
• Reduced e’
Findings universally associated with abnormal LV relaxation
Is LV relaxation normal or impaired?
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Myocardial (or annular) Velocity by Tissue Doppler
Normal Relaxation
e’e’
Impaired Relaxation
e’
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64F; HTN and dyspnea
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Assessment of Left Atrial Size
Normal LA vol: ≥34ml/m2
JASE 2005;18:1440
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Comparison of left and right atrial
volume by echocardiography versus
cardiac magnetic resonance imaging
using the area-length method
Whitlock M, et al. Am J Cardiol 2010;106:1345
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55M with dyspnea: EF, 27%
100% likelihood of impaired relaxation
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RELAXATION SYSTOLIC HF
IVRT IVRT
E
A
Systolic Heart Failure
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79M with HTN and dyspnea
100% likelihood of abnormal relaxation
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MIFMIF
Impaired LV relaxation Yes Yes Yes Yes
Increased LV stiffness 0-+ ++ +++ ++++
Elevated atrial pressure 0 ++ +++ ++++
Impaired LV relaxation Yes Yes Yes Yes
Increased LV stiffness 0-+ ++ +++ ++++
Elevated atrial pressure 0 ++ +++ ++++
MIF-ValMIF-Val
DTIDTI
PVPV
EE
AA
EE
AA
eeaa
DDSS
ARAR
ARdurARdur
AdurAdur
Normal DFNormal DF Mild DDMild DD Moderate DDModerate DD Severe DDSevere DDImpaired
relaxation
Impaired relaxation
PseudonormalPseudonormal RestrictiveRestrictive Fixed restrictiveFixed restrictive
Type 1 Type 2 Type 3
Diastolic Dysfunction
When is Type 1 abnormal versus
due to old age?
Lat e’<10
Sep e’ <8
E/A<1
What about age > 80?
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Cardiac Structure and Function
in Persons >85 yrs
Leibowitz D, et al. Am J Cardiol May 2011
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• Very advanced age
• Low EF
• Abnormal Regional WM
• Concentric LVH
– Exception: athletes
• Enlarged LA: found in >90% of patients with diastolic dysfunction
– Sensitive but not specific
• Reduced e’
Findings universally associated with abnormal LV relaxation
Is LV relaxation normal or impaired?
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How To Assess Diastolic Function
1st question:
Is LV relaxation normal, reduced by age or abnormal?
2nd question:
Are resting LVFP’s normal or elevated?
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LVEDP
Relate better with Sx’s
LV pre-A wave
mean LAP/PCW
Filling Pressures: What should we measure?
LV min P
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PV-Ad = 170ms
MV-Ad = 120ms
Pulmonary Vein and Transmitral Velocity
Mitral
Pulm.
Vein
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PV-Ad = 170ms
MV-Ad = 120ms Rossvoll O, Hatle LK JACC 1993;21:1687
PVAd - MVAd
Estimation of LVEDP
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RELAXATION SYSTOLIC HF
IVRT IVRT
E
A
Systolic Heart Failure
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MIF
Impaired LV relaxation Yes Yes Yes Yes
Increased LV stiffness 0-+ ++ +++ ++++
Elevated atrial pressure 0 ++ +++ ++++
DTI
PV
E
A
EA
ea
DS
AR
ARdur
Adur
Normal DF Mild DD Moderate DD Severe DDImpaired relaxation
Pseudonormal Restrictive Fixed restrictive
Type 1 Type 2 Type 3
E/A<1 E/A, 1-1.5 E/A2 E/A2
Abnormal LV relaxation
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MIF
Impaired LV relaxation Yes Yes Yes Yes
Increased LV stiffness 0-+ ++ +++ ++++
Elevated atrial pressure 0 ++ +++ ++++
MIF-Val
DTI
PV
E
A
EA
ea
DS
AR
ARdur
Adur
Normal DF Mild DD Moderate DD Severe DDImpaired relaxation
Pseudonormal Restrictive Fixed restrictive
Type 1 Type 2 Type 3
High Filling Pressures
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mean PCWP = 17 + 5.3EA - 0.11IVRT
Naqueh et al, Am J Cardiol 75: 1256, 1995
Doppler estimation of LV filling pressures
in Patients With Depressed LVEF
E
A
IVRT=40ms
Mean PCWP= [17 + (5 x E/A)] -(0.1 x IVRT)
= [17 + 17.5] - 4 = 31mmHg
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Dopple
r E
stim
ate
(mm
Hg)
mean PCWP = 17 + 5.3EA - 0.11IVRT
Prospective Group All Patients
Catheter Pressure (mmHg)
Naqueh et al, Am J Cardiol 75: 1256, 1995
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MIF
Impaired LV relaxation Yes Yes Yes Yes
Increased LV stiffness 0-+ ++ +++ ++++
Elevated atrial pressure 0 ++ +++ ++++
MIF-Val
DTI
PV
E
A
EA
ea
DS
AR
ARdur
Adur
Normal DF Mild DD Moderate DD Severe DDAvg E/e’ <9 Avg E/e’ 9-12 Avg E/e’ ≥13
Type 1 Type 2 Type 3-4
Increased E/e’ Avg E/e’ < 9
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56M with HTN and dyspnea
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56M with HTN and dyspnea
Normal filling vs Pseudonormal?
Findings that favor pseudonormal
HTN with LVH
Large LA
Apv duration > Amv duration
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Severe LVH With E/A <1 and Elevated LAP
Mean LAP
22 mmHg
Nishimura et al, JACC 1996;28:1226
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Conventional Doppler Estimation of
LV Filling Pressures In HCM
Nagueh et al Circulation 1999;99:254-261
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NORMAL RELAXATION DIASTOLIC HF
IVRT IVRT
IVRT
e’
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MIF
MIF-Val
DTI
PV
E
A
EA
ea
DS
AR
ARdur
Adur
Normal DF Mild DD Moderate DD Severe DDAvg E/e’ <9 Avg E/e’ 9-12 Avg E/e’ ≥13
E > 50cm/s
E/A < 1
Increased E/e’
Estimation of mean LAP: Normal LVEF
Mean LAP ≥15Mean LAP < 15
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The ratio of transmitral E-vel to e’ relates well with
mean PCWP
E
e’
E/e’
Mea
n P
CW
P (
mm
Hg)
Nagueh et al, JACC 1997;30:1527-1533
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Impact of LVEF on Estimation of Filling Pressures
LVEF > 50%
E/E’-Lateral E/E’-Septal
PC
WP
(m
mH
g)
Rivas-Gotz et al Am J Cardiol 2003;91:780
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65F diabetic; HTN with dyspnea
Filling pressures are:
A. normal
B. elevated
C. ???
Type 1 diastolic dysfunction?
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65F diabetic; BP
214/104; Class 3 heart
failure
MethodistDeBakey Heart Center
80
54
E/e’ = 16E/e’ = 20
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65F diabetic; HTN with dyspnea
Patient responded to
therapy with diuretics and
blood pressure reduction
TR = 3.3m/s
PASP = 44mmHg +RAP
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Usefulness of PA systolic pressure to predict pulmonary arterial wedge
pressure in patients with normal LV systolic function
Bouchard JL, Aurigemma GP, et al. Am J Cardiol 2008;101:1673
PV = 97%
PV = 100%
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Estimation of LV Filling Pressures
A practical approach
Combining 2D LV and LA evaluation with Doppler was 85%
sensitive and 95% specific for detecting heart failure and superior to
BNP > 150pg/ml
(Dokainish Am J Cardiol 2004; 93:1130)
Dyspnea, enlarged LA, and high PASP = diastolic HF
E/e’ and TR vel are very helpful in validating Dx
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Limitations of Annular Velocity (e’)
• E/e’ cannot be used as an index of LV filling
pressures in patients with mitral stenosis,
prosthetic valve or even severe annular
calcification
– Short IVRT in the presence of reduced e’ is a marker
of elevated LVFP
• Particularly is LA is enlarged and PASP is elevated
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Limitations of Annular Velocity (e’)
• E/e’ is unreliable in normal-healthy hearts
– Ex: normal heart with severe MR
• E/e’ is unreliable in constrictive pericarditis.
– Ea remains preserved despite increased LV diastolic pressure
• e’ is a regional index; thus, it can vary between sampling sites and in patients with abnormal regional wall motion
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Patient with an anterior MI
Septal Lateral
510
Nagueh et al. JASE 2009Avg e’ = 7.5cm/s
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E/A <1 and E 50 cm/s
E/e’ (average e’) > 15
E/Vp ≥ 2.5
S/D < 1
Ar – A > 30 ms
Valsalva E/A > 0.5
PAS >35 mmHg
E/A ≥2, DT <150 ms
Mitral E/A
LAP
Estimation of Filling Pressures in
Patients with Depressed EF
E/e’ (average e’) < 8
E/Vp <1.4
S/D >1
Ar – A < 0 ms
Valsalva E/A < 0.5
PAS <30 mmHg
LAP
Normal LAPNormal LAP
E/A ≥1 - < 2, or
E/A < 1 and E > 50 cm/s
Nagueh et al, JASE 2009
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MIF
MIF-Val
DTI
PV
E
A
EA
ea
DS
AR
ARdur
Adur
Normal DF Mild DD Moderate DD Severe DDAvg E/e’ <9 Avg E/e’ 9-12 Avg E/e’ ≥13
Increased E/A and E/e’
Short DT Mean LAP ≥15
Avg E/e’ < 9E/A ≤ 1Mean LAP < 15
~ 85 % accurate in patients with depressed LVEF
LA enlargement in > 95%
Estimation of mean LAP: Depressed LVEF
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E/e’ < 8
(Sep, Lat, or Av.)
LA volume ≥ 34 ml/m2
Ar – A ≥ 30 ms
Valsalva E/A > 0.5
PAS >35 mmHg
IVRT <80
E/e’ 9-14
Sep. E/e’ > 15
or
Lat. E/e’ > 12
or
Av. E/e’ > 13
E/e’
LAP
Estimation of Filling Pressures in
Patients with Normal EF
LA volume < 34 ml/m2
Ar – A < 0 ms
Valsalva E/A < 0.5
PAS <30 mmHg
IVRT >90
LAPNormal LAPNormal LAP
Nagueh et al, JASE 2009
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Estimation of LV Filling Pressures
• In pts with normal EF: look for LA enlargement
-With type I pattern (E/A<1):
-E ≤50cm/s: high PCWP is highly unlikely
-E>50cm/s: use E/e’ or short IVRT
-With type II or III/IV pattern:
-LVFP’s are most likely elevated (particularly if
other 2D findings support it)
-low e’ usually present
Confirm with PASP by TR velocity
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Normal LV Relaxation Impaired LV Relaxation
LAVI < 34 ml/m2
E/A < 1
PV S/D ≥ 1
E/e’ ≤ 8
LAVI >34 ml/m2
E/A > 1 E/A < 1
PV S/D < 1 PV S/D ≥ 1
E/e’ > 12 E/e’ > 12
LAVI >34 ml/m2
E/A < 1
PV S/D ≥ 1
E/e’ ≤ 8
Normal LAP Increased LAP
PASP usually < 35 mmHg
unless patient has PHT
PASP usually > 35 mmHg
unless patient has low EF
with poor CO
Estimation of mean LA Pressure
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Estimation of LV Filling Pressures
Atrial Fibrillation
• Elderly pt with dyspnea and PASP ≥40mmHg has
high LVFP until proven otherwise
• Exception
– RV > LV with septal flattening
• DT <150ms predicts high LVFP in EF<40%
• E/e’ is problematic
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Thanks
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