An Integrated Approach to Study LV Diastolic Function
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1 An Integrated Approach to Study LV Diastolic Function Assoc. Prof. Adriana Ilieşiu, FESC University of Medicine Carol Davila Bucharest, Romania
2 LV Diastolic Dysfunction impaired relaxation (early diastole) LV resistance to filling compliance (mid late diastole) LV filling pressures must increase Normal diastolic function LV diastolic dysfunction
3 Echocardiography in LV Diastolic Dysfunction Doppler indices and 2D/M-mode parameters
4 Echocardiography in the LV Diastolic Dysfunction Diagnosis of the LV diastolic dysfunction Evaluation of LV filling pressure Diagnosis of HFNEF
5 Mitral inflow Pressure 30 mmhg LV Apex Normal values in adults: E > A DT IVRT Vmax E 200 msec Vmax A Normal values age-dependent LV Filling Rate ml/sec IVRT DT A dur -150 Early Filling Diastasis Atrial Systole
6 Mitral inflow - LV filling patterns Abnormal Relaxation Pseudonormal Restrictive Filling 20 A E E 0 80 E A A 40 0 Grade I Mild Grade II Moderate Grade III Severe Grading diastolic dysfunction Worsening diastolic function
7 Mitral inflow - LV filling patterns Mitral inflow is load dependent normal pseudonormal Tau LAP E E A E A E A A Impaired relaxation E Filling pressure (LAP) E Worsening diastolic function
8 Mitral annulus velocities TDI Ea or e is significantly related with LV relaxation
9 Early mitral annulus velocity e cm/s y = 14,70 0,15x r = -0,56 p = 0.01 e tau e can be used as non-invasive index of LV relaxation Sohn DW, et al. J Am Coll Cardiol 1997
10 Mitral annulus velocities TDI Limitations of e e lateral < 10 cm/sec e septal < 8 cm/sec Heavy annular calcification Prosthetic mitral valves Mitral stenosis and regurgitation
11 Intraventricular colour M-mode flow propagation velocity in early diastole -Vp Colour M-mode- High temporal and spatial resolution
12 Intraventricular colour M-mode flow propagation velocity - Vp Tau (msec) R = Y = x p < Vp < 50 cm/sec impaired relaxation Limits: small LV volumes / normal EF Interobserver variability Garcia MJ, et al. J Am Coll Cardiol 2000
13 Pulmonary Venous Flow E A S2 D S1 Av
14 Pulmonary venous flow S > D S < D and Ar > A S< < D and Ar > A Abnormal Relaxation Pseudonormal pattern Restrictive pattern Limits: load dependent cannot be obtained in all patients Appleton CP et al, Heart Failure Clinics 2000
15 Preload reduction - Valsalva Maneuver Normal filling pressure Delayed relaxation + LAP Before After Before After E A E E A A A E E/A < 0.5 E/A > 0.5 Limits : smaller magnitude of change = normal LV diastolic function difficult to obtain HurrellD et al., J Am Coll Cardiol 1997
16 Left Ventricular and Left Atrial Remodelling LV Hypertrophy LA volume index > 34 ml/mp Dilated LA in the absence of diastolic dysfunction Mitral valve disease Atrial fibrilation Anemia/high output states
17 LV Diastolic Dysfunction Diagnosis of the LV diastolic dysfunction Evaluation of LV filling pressure Diagnosis of HFNEF Challenging situations
18 Evaluation of LV filling pressure Combined indices E/e E/Vp Ar - A
19 E/e' and PWCP E/e ratio = most important combined indice to estimate LV filling pressure Y = x R = 0.87 N=60 Independent of EF PCWP mmhg Sinus tachycardia Atrial fibrilation HOCM E/e Nagueh SF et al. J Am Coll Cardiol 1997
20 E/e' and PWCP LV Filling Pressure (mmhg) E/e < 8 E/e 8-15 E/e > 15 The majority of patients with elevated filling pressure and normal EF were in the group of E/e between 8-15 Ommen SR et al, Circ 2000
21 E/Vp and PCWP 2.5 y = 0.039x r = 0.81 p < E/Vp > 2.5 E/Vp (cm/sec) PCWP Lower accuracy in normal EF / small LV Garcia J Am Coll Cardiol 1997, Rivas-Gotz C, Am J Cardiol 2003
22 Time Ar - A and LVEDP Duration of Ar difficult to measure A r A > 30 msec LVEDP > 15 mmhg Independent of EF and age Rossvoll, Hatle, J Am Coll Cardiol 1993
23 J Am Soc Echo 2009, Eur Jl Echocard :
24 Estimation of filling pressures in patients with depressed EF Nagueh SF et al, JASE and Eur JL Echocard 2009
25 Estimation of filling pressures in patients with normal EF Nagueh SF et al, JASE and Eur JL Echocard 2009
26 LV Diastolic Dysfunction Diagnosis of the LV diastolic dysfunction Evaluation of LV filling pressure Diagnosis of HFNEF
27 Diagnosis of Heart Failure with Normal EF Symptoms or signs of heart failure Normal or mildly reduced left ventricular systolic function LVEF> 50% and LVEDVI < 97 ml/m2 Evidence of abnormal LV relaxation, filling, diastolic distensibility and diastolic stiffness Echocardiography E/e E/e > > E/e > 8 Echo Doppler E/A < 0,5 and DT >280 ms or Ard-Ad > 30 ms or LAVI > 40 ml/m2 or LVMI > 122 g/m2 women >149 g/m2 men or Atrial fibrilation Natriuretic peptides HFNEF Adapted from Paulus WJ, Eur H J 2007
28 Atrial Fibrillation and Diastolic Dysfunction E/e > 11 E/Vp > 1.4 Mitral inflow DT <150 ms IVRT < 65 msec PVF DT < 220 msec
29 Diastolic stress test rest Normal stress Exertional dyspnea and Impaired relaxation/ normal filling pressures mm Hg E e E / e Heart failure mm Hg
30 Conclusions Comprehensive evaluation of LV diastolic dysfunction consists of the assessment of LV filling and filling pressure together with the left atrial and left ventricular size, morphology and function. The diagnosis of HFNEF remain challenging and the LV diastolic function can be assessed during exercise stress. The emerging techniques assessing myocardial deformation and ventricular-arterial coupling will add new insights into the left ventricular and left atrial function.
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